November 2018 - LKP - Ml01.01.Org

Re: [LKP] [rcu] kernel BUG at include/linux/pagemap.h:149!

by Frederic Weisbecker

On Fri, Sep 11, 2015 at 10:19:47AM +0800, Boqun Feng wrote: > Subject: [PATCH 01/27] rcu: Don't disable preemption for Tiny and Tree RCU > readers > > Because preempt_disable() maps to barrier() for non-debug builds, > it forces the compiler to spill and reload registers. Because Tree > RCU and Tiny RCU now only appear in CONFIG_PREEMPT=n builds, these > barrier() instances generate needless extra code for each instance of > rcu_read_lock() and rcu_read_unlock(). This extra code slows down Tree > RCU and bloats Tiny RCU. > > This commit therefore removes the preempt_disable() and preempt_enable() > from the non-preemptible implementations of __rcu_read_lock() and > __rcu_read_unlock(), respectively. > > For debug purposes, preempt_disable() and preempt_enable() are still > kept if CONFIG_PREEMPT_COUNT=y, which makes the detection of sleeping > inside atomic sections still work in non-preemptible kernels. > > Signed-off-by: Boqun Feng <boqun.feng(a)gmail.com> > Signed-off-by: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> > --- > include/linux/rcupdate.h | 6 ++++-- > include/linux/rcutiny.h | 1 + > kernel/rcu/tree.c | 9 +++++++++ > 3 files changed, 14 insertions(+), 2 deletions(-) > > diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h > index d63bb77..6c3cece 100644 > --- a/include/linux/rcupdate.h > +++ b/include/linux/rcupdate.h > @@ -297,12 +297,14 @@ void synchronize_rcu(void); > > static inline void __rcu_read_lock(void) > { > - preempt_disable(); > + if (IS_ENABLED(CONFIG_PREEMPT_COUNT)) > + preempt_disable(); preempt_disable() is a no-op when !CONFIG_PREEMPT_COUNT, right? Or rather it's a barrier(), which is anyway implied by rcu_read_lock(). So perhaps we can get rid of the IS_ENABLED() check?

1 year, 7 months

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[mm] ac5b2c1891: vm-scalability.throughput -61.3% regression

by kernel test robot

Greeting, FYI, we noticed a -61.3% regression of vm-scalability.throughput due to commit: commit: ac5b2c18911ffe95c08d69273917f90212cf5659 ("mm: thp: relax __GFP_THISNODE for MADV_HUGEPAGE mappings") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master in testcase: vm-scalability on test machine: 72 threads Intel(R) Xeon(R) CPU E5-2699 v3 @ 2.30GHz with 128G memory with following parameters: runtime: 300 thp_enabled: always thp_defrag: always nr_task: 32 nr_ssd: 1 test: swap-w-seq ucode: 0x3d cpufreq_governor: performance test-description: The motivation behind this suite is to exercise functions and regions of the mm/ of the Linux kernel which are of interest to us. test-url: https://git.kernel.org/cgit/linux/kernel/git/wfg/vm-scalability.git/ Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml ========================================================================================= compiler/cpufreq_governor/kconfig/nr_ssd/nr_task/rootfs/runtime/tbox_group/test/testcase/thp_defrag/thp_enabled/ucode: gcc-7/performance/x86_64-rhel-7.2/1/32/debian-x86_64-2018-04-03.cgz/300/lkp-hsw-ep4/swap-w-seq/vm-scalability/always/always/0x3d commit: 94e297c50b ("include/linux/notifier.h: SRCU: fix ctags") ac5b2c1891 ("mm: thp: relax __GFP_THISNODE for MADV_HUGEPAGE mappings") 94e297c50b529f5d ac5b2c18911ffe95c08d692739 ---------------- -------------------------- %stddev %change %stddev \ | \ 0.57 ± 35% +258.8% 2.05 ± 4% vm-scalability.free_time 146022 ± 14% -40.5% 86833 ± 2% vm-scalability.median 29.29 ± 40% -89.6% 3.06 ± 26% vm-scalability.stddev 7454656 ± 9% -61.3% 2885836 ± 3% vm-scalability.throughput 189.21 ± 10% +52.4% 288.34 ± 2% vm-scalability.time.elapsed_time 189.21 ± 10% +52.4% 288.34 ± 2% vm-scalability.time.elapsed_time.max 8768 ± 3% +11.6% 9781 ± 5% vm-scalability.time.involuntary_context_switches 20320196 ± 2% -33.4% 13531732 ± 3% vm-scalability.time.maximum_resident_set_size 425945 ± 9% +17.4% 499908 ± 4% vm-scalability.time.minor_page_faults 253.79 ± 6% +62.0% 411.07 ± 4% vm-scalability.time.system_time 322.52 +8.0% 348.18 vm-scalability.time.user_time 246150 ± 12% +50.3% 370019 ± 4% vm-scalability.time.voluntary_context_switches 7746519 ± 11% +49.0% 11538799 ± 4% cpuidle.C6.usage 192240 ± 10% +44.3% 277460 ± 8% interrupts.CAL:Function_call_interrupts 22.45 ± 85% -80.6% 4.36 ±173% sched_debug.cfs_rq:/.MIN_vruntime.avg 22.45 ± 85% -80.6% 4.36 ±173% sched_debug.cfs_rq:/.max_vruntime.avg 29.36 ± 13% +10.8% 32.52 ± 14% boot-time.boot 24.28 ± 16% +12.4% 27.30 ± 16% boot-time.dhcp 1597 ± 15% +10.2% 1760 ± 15% boot-time.idle 68.25 -9.8 58.48 ± 2% mpstat.cpu.idle% 27.12 ± 5% +10.3 37.42 ± 3% mpstat.cpu.iowait% 2.48 ± 11% -0.8 1.73 ± 2% mpstat.cpu.usr% 3422396 ± 14% +46.6% 5018492 ± 7% softirqs.RCU 1776561 ± 10% +52.4% 2707785 ± 2% softirqs.SCHED 5685772 ± 7% +54.3% 8774055 ± 3% softirqs.TIMER 7742519 ± 11% +49.0% 11534924 ± 4% turbostat.C6 29922317 ± 10% +55.0% 46366941 turbostat.IRQ 9.49 ± 64% -83.0% 1.62 ± 54% turbostat.Pkg%pc2 36878790 ± 27% -84.9% 5570259 ± 47% vmstat.memory.free 1.117e+08 ± 15% +73.5% 1.939e+08 ± 10% vmstat.memory.swpd 25.25 ± 4% +34.7% 34.00 vmstat.procs.b 513725 ± 7% +47.9% 759561 ± 12% numa-numastat.node0.local_node 35753 ±160% +264.7% 130386 ± 39% numa-numastat.node0.numa_foreign 519403 ± 6% +48.7% 772182 ± 12% numa-numastat.node0.numa_hit 35753 ±160% +264.7% 130386 ± 39% numa-numastat.node1.numa_miss 44315 ±138% +198.5% 132279 ± 40% numa-numastat.node1.other_node 32798032 ± 46% +80.6% 59228165 ± 2% numa-meminfo.node0.Active 32798009 ± 46% +80.6% 59228160 ± 2% numa-meminfo.node0.Active(anon) 33430762 ± 46% +80.8% 60429537 ± 2% numa-meminfo.node0.AnonHugePages 33572119 ± 46% +80.2% 60512777 ± 2% numa-meminfo.node0.AnonPages 1310559 ± 64% +86.4% 2442244 ± 2% numa-meminfo.node0.Inactive 1309969 ± 64% +86.4% 2442208 ± 2% numa-meminfo.node0.Inactive(anon) 30385359 ± 53% -90.7% 2821023 ± 44% numa-meminfo.node0.MemFree 35505047 ± 45% +77.6% 63055165 ± 2% numa-meminfo.node0.MemUsed 166560 ± 42% +130.2% 383345 ± 6% numa-meminfo.node0.PageTables 23702 ±105% -89.0% 2617 ± 44% numa-meminfo.node0.Shmem 1212 ± 65% +402.8% 6093 ± 57% numa-meminfo.node1.Shmem 8354144 ± 44% +77.1% 14798964 ± 2% numa-vmstat.node0.nr_active_anon 8552787 ± 44% +76.8% 15122222 ± 2% numa-vmstat.node0.nr_anon_pages 16648 ± 44% +77.1% 29492 ± 2% numa-vmstat.node0.nr_anon_transparent_hugepages 7436650 ± 53% -90.4% 712936 ± 44% numa-vmstat.node0.nr_free_pages 332106 ± 63% +83.8% 610268 ± 2% numa-vmstat.node0.nr_inactive_anon 41929 ± 41% +130.6% 96703 ± 6% numa-vmstat.node0.nr_page_table_pages 5900 ±106% -89.0% 650.75 ± 45% numa-vmstat.node0.nr_shmem 43336 ± 92% +151.2% 108840 ± 7% numa-vmstat.node0.nr_vmscan_write 43110 ± 92% +150.8% 108110 ± 7% numa-vmstat.node0.nr_written 8354142 ± 44% +77.1% 14798956 ± 2% numa-vmstat.node0.nr_zone_active_anon 332105 ± 63% +83.8% 610269 ± 2% numa-vmstat.node0.nr_zone_inactive_anon 321.50 ± 66% +384.9% 1559 ± 59% numa-vmstat.node1.nr_shmem 88815743 ± 10% +33.8% 1.188e+08 ± 2% meminfo.Active 88815702 ± 10% +33.8% 1.188e+08 ± 2% meminfo.Active(anon) 90446011 ± 11% +34.0% 1.212e+08 ± 2% meminfo.AnonHugePages 90613587 ± 11% +34.0% 1.214e+08 ± 2% meminfo.AnonPages 5.15e+08 ± 3% +22.2% 6.293e+08 ± 2% meminfo.Committed_AS 187419 ± 10% -19.6% 150730 ± 7% meminfo.DirectMap4k 3620693 ± 18% +35.3% 4897093 ± 2% meminfo.Inactive 3620054 ± 18% +35.3% 4896961 ± 2% meminfo.Inactive(anon) 36144979 ± 28% -87.0% 4715681 ± 57% meminfo.MemAvailable 36723121 ± 27% -85.9% 5179468 ± 52% meminfo.MemFree 395801 ± 2% +56.9% 620816 ± 4% meminfo.PageTables 178672 +15.1% 205668 ± 2% meminfo.SUnreclaim 249496 +12.6% 280897 meminfo.Slab 1751813 ± 2% +34.7% 2360437 ± 3% meminfo.SwapCached 6.716e+08 -12.4% 5.88e+08 ± 2% meminfo.SwapFree 3926 ± 17% +72.9% 6788 ± 13% meminfo.Writeback 1076 ± 3% +42.9% 1538 ± 4% slabinfo.biovec-max.active_objs 275.75 ± 2% +41.1% 389.00 ± 4% slabinfo.biovec-max.active_slabs 1104 ± 2% +41.0% 1557 ± 4% slabinfo.biovec-max.num_objs 275.75 ± 2% +41.1% 389.00 ± 4% slabinfo.biovec-max.num_slabs 588.25 ± 7% +17.9% 693.75 ± 7% slabinfo.file_lock_cache.active_objs 588.25 ± 7% +17.9% 693.75 ± 7% slabinfo.file_lock_cache.num_objs 13852 ± 3% +37.5% 19050 ± 3% slabinfo.kmalloc-4k.active_objs 1776 ± 3% +37.7% 2446 ± 3% slabinfo.kmalloc-4k.active_slabs 14217 ± 3% +37.7% 19577 ± 3% slabinfo.kmalloc-4k.num_objs 1776 ± 3% +37.7% 2446 ± 3% slabinfo.kmalloc-4k.num_slabs 158.25 ± 15% +54.0% 243.75 ± 18% slabinfo.nfs_read_data.active_objs 158.25 ± 15% +54.0% 243.75 ± 18% slabinfo.nfs_read_data.num_objs 17762 ± 4% +44.3% 25638 ± 4% slabinfo.pool_workqueue.active_objs 563.25 ± 3% +43.7% 809.25 ± 4% slabinfo.pool_workqueue.active_slabs 18048 ± 3% +43.5% 25906 ± 4% slabinfo.pool_workqueue.num_objs 563.25 ± 3% +43.7% 809.25 ± 4% slabinfo.pool_workqueue.num_slabs 34631 ± 3% +21.0% 41905 ± 2% slabinfo.radix_tree_node.active_objs 624.50 ± 3% +20.7% 753.75 ± 2% slabinfo.radix_tree_node.active_slabs 34998 ± 3% +20.7% 42228 ± 2% slabinfo.radix_tree_node.num_objs 624.50 ± 3% +20.7% 753.75 ± 2% slabinfo.radix_tree_node.num_slabs 9.727e+11 ± 8% +50.4% 1.463e+12 ± 12% perf-stat.branch-instructions 1.11 ± 12% +1.2 2.31 ± 8% perf-stat.branch-miss-rate% 1.078e+10 ± 13% +214.9% 3.395e+10 ± 17% perf-stat.branch-misses 3.17 ± 11% -1.5 1.65 ± 9% perf-stat.cache-miss-rate% 8.206e+08 ± 7% +49.4% 1.226e+09 ± 11% perf-stat.cache-misses 2.624e+10 ± 14% +187.0% 7.532e+10 ± 17% perf-stat.cache-references 1174249 ± 9% +52.3% 1788442 ± 3% perf-stat.context-switches 2.921e+12 ± 8% +71.1% 4.998e+12 ± 9% perf-stat.cpu-cycles 1437 ± 14% +85.1% 2661 ± 20% perf-stat.cpu-migrations 7.586e+08 ± 21% +134.7% 1.78e+09 ± 30% perf-stat.dTLB-load-misses 7.943e+11 ± 11% +84.3% 1.464e+12 ± 14% perf-stat.dTLB-loads 93963731 ± 22% +40.9% 1.324e+08 ± 10% perf-stat.dTLB-store-misses 3.394e+11 ± 6% +60.5% 5.449e+11 ± 10% perf-stat.dTLB-stores 1.531e+08 ± 22% +44.0% 2.204e+08 ± 11% perf-stat.iTLB-load-misses 1.688e+08 ± 23% +71.1% 2.888e+08 ± 12% perf-stat.iTLB-loads 3.267e+12 ± 7% +58.5% 5.177e+12 ± 13% perf-stat.instructions 3988 ± 43% +123.9% 8930 ± 22% perf-stat.major-faults 901474 ± 5% +34.2% 1209877 ± 2% perf-stat.minor-faults 31.24 ± 10% +21.7 52.91 ± 2% perf-stat.node-load-miss-rate% 1.135e+08 ± 16% +187.6% 3.264e+08 ± 13% perf-stat.node-load-misses 6.27 ± 17% +26.9 33.19 ± 4% perf-stat.node-store-miss-rate% 27354489 ± 15% +601.2% 1.918e+08 ± 13% perf-stat.node-store-misses 905482 ± 5% +34.6% 1218833 ± 2% perf-stat.page-faults 4254 ± 7% +58.5% 6741 ± 13% perf-stat.path-length 6364 ± 25% +84.1% 11715 ± 14% proc-vmstat.allocstall_movable 46439 ± 12% +100.4% 93049 ± 21% proc-vmstat.compact_migrate_scanned 22425696 ± 10% +29.0% 28932634 ± 6% proc-vmstat.nr_active_anon 22875703 ± 11% +29.2% 29560082 ± 6% proc-vmstat.nr_anon_pages 44620 ± 11% +29.2% 57643 ± 6% proc-vmstat.nr_anon_transparent_hugepages 879436 ± 28% -77.3% 199768 ± 98% proc-vmstat.nr_dirty_background_threshold 1761029 ± 28% -77.3% 400034 ± 98% proc-vmstat.nr_dirty_threshold 715724 +17.6% 841386 ± 3% proc-vmstat.nr_file_pages 8960545 ± 28% -76.4% 2111248 ± 93% proc-vmstat.nr_free_pages 904330 ± 18% +31.2% 1186458 ± 7% proc-vmstat.nr_inactive_anon 11137 ± 2% +27.1% 14154 ± 9% proc-vmstat.nr_isolated_anon 12566 +3.5% 13012 proc-vmstat.nr_kernel_stack 97491 ± 2% +52.6% 148790 ± 10% proc-vmstat.nr_page_table_pages 17674 +6.2% 18763 ± 2% proc-vmstat.nr_slab_reclaimable 44820 +13.0% 50645 ± 2% proc-vmstat.nr_slab_unreclaimable 135763 ± 9% +68.4% 228600 ± 6% proc-vmstat.nr_vmscan_write 1017 ± 10% +54.7% 1573 ± 14% proc-vmstat.nr_writeback 220023 ± 5% +73.5% 381732 ± 6% proc-vmstat.nr_written 22425696 ± 10% +29.0% 28932635 ± 6% proc-vmstat.nr_zone_active_anon 904330 ± 18% +31.2% 1186457 ± 7% proc-vmstat.nr_zone_inactive_anon 1018 ± 10% +55.3% 1581 ± 13% proc-vmstat.nr_zone_write_pending 145368 ± 48% +63.1% 237050 ± 17% proc-vmstat.numa_foreign 671.50 ± 96% +479.4% 3890 ± 71% proc-vmstat.numa_hint_faults 1122389 ± 9% +17.2% 1315380 ± 4% proc-vmstat.numa_hit 214722 ± 5% +21.6% 261076 ± 3% proc-vmstat.numa_huge_pte_updates 1108142 ± 9% +17.4% 1300857 ± 4% proc-vmstat.numa_local 145368 ± 48% +63.1% 237050 ± 17% proc-vmstat.numa_miss 159615 ± 44% +57.6% 251573 ± 16% proc-vmstat.numa_other 185.50 ± 81% +8278.6% 15542 ± 40% proc-vmstat.numa_pages_migrated 1.1e+08 ± 5% +21.6% 1.337e+08 ± 3% proc-vmstat.numa_pte_updates 688332 ±106% +177.9% 1913062 ± 3% proc-vmstat.pgalloc_dma32 72593045 ± 10% +51.1% 1.097e+08 ± 3% proc-vmstat.pgdeactivate 919059 ± 4% +35.1% 1241472 ± 2% proc-vmstat.pgfault 3716 ± 45% +120.3% 8186 ± 25% proc-vmstat.pgmajfault 7.25 ± 26% +4.2e+05% 30239 ± 25% proc-vmstat.pgmigrate_fail 5340 ±106% +264.0% 19438 ± 33% proc-vmstat.pgmigrate_success 2.837e+08 ± 10% +51.7% 4.303e+08 ± 3% proc-vmstat.pgpgout 211428 ± 6% +74.1% 368188 ± 4% proc-vmstat.pgrefill 219051 ± 5% +73.7% 380419 ± 5% proc-vmstat.pgrotated 559397 ± 8% +43.0% 800110 ± 11% proc-vmstat.pgscan_direct 32894 ± 59% +158.3% 84981 ± 23% proc-vmstat.pgscan_kswapd 207042 ± 8% +71.5% 355174 ± 5% proc-vmstat.pgsteal_direct 14745 ± 65% +104.3% 30121 ± 18% proc-vmstat.pgsteal_kswapd 70934968 ± 10% +51.7% 1.076e+08 ± 3% proc-vmstat.pswpout 5852284 ± 12% +145.8% 14382881 ± 5% proc-vmstat.slabs_scanned 13453 ± 24% +204.9% 41023 ± 8% proc-vmstat.thp_split_page_failed 138385 ± 10% +51.6% 209783 ± 3% proc-vmstat.thp_split_pmd 138385 ± 10% +51.6% 209782 ± 3% proc-vmstat.thp_swpout 4.61 ± 24% -1.2 3.37 ± 10% perf-profile.calltrace.cycles-pp.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt.cpuidle_enter_state.do_idle 2.90 ± 18% -0.7 2.19 ± 8% perf-profile.calltrace.cycles-pp.__hrtimer_run_queues.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt.cpuidle_enter_state 1.86 ± 32% -0.6 1.22 ± 7% perf-profile.calltrace.cycles-pp.tick_sched_timer.__hrtimer_run_queues.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt 1.60 ± 31% -0.5 1.08 ± 10% perf-profile.calltrace.cycles-pp.tick_sched_handle.tick_sched_timer.__hrtimer_run_queues.hrtimer_interrupt.smp_apic_timer_interrupt 2.98 ± 8% -0.5 2.48 ± 10% perf-profile.calltrace.cycles-pp.menu_select.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 1.46 ± 32% -0.5 0.96 ± 9% perf-profile.calltrace.cycles-pp.update_process_times.tick_sched_handle.tick_sched_timer.__hrtimer_run_queues.hrtimer_interrupt 0.74 ± 27% -0.5 0.28 ±100% perf-profile.calltrace.cycles-pp.scheduler_tick.update_process_times.tick_sched_handle.tick_sched_timer.__hrtimer_run_queues 1.03 ± 52% -0.4 0.63 ± 15% perf-profile.calltrace.cycles-pp.clockevents_program_event.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt.cpuidle_enter_state 1.17 ± 19% -0.3 0.87 ± 11% perf-profile.calltrace.cycles-pp.tick_nohz_next_event.tick_nohz_get_sleep_length.menu_select.do_idle.cpu_startup_entry 0.80 ± 17% +0.4 1.22 ± 7% perf-profile.calltrace.cycles-pp.nvme_queue_rq.__blk_mq_try_issue_directly.blk_mq_try_issue_directly.blk_mq_make_request.generic_make_request 0.81 ± 16% +0.4 1.23 ± 8% perf-profile.calltrace.cycles-pp.blk_mq_try_issue_directly.blk_mq_make_request.generic_make_request.submit_bio.__swap_writepage 0.81 ± 16% +0.4 1.23 ± 8% perf-profile.calltrace.cycles-pp.__blk_mq_try_issue_directly.blk_mq_try_issue_directly.blk_mq_make_request.generic_make_request.submit_bio 0.52 ± 60% +0.5 1.03 ± 6% perf-profile.calltrace.cycles-pp.dma_pool_alloc.nvme_queue_rq.__blk_mq_try_issue_directly.blk_mq_try_issue_directly.blk_mq_make_request 1.64 ± 16% +0.6 2.21 ± 15% perf-profile.calltrace.cycles-pp.find_next_bit.blk_mq_queue_tag_busy_iter.blk_mq_in_flight.part_round_stats.blk_account_io_done 0.51 ± 64% +0.8 1.31 ± 17% perf-profile.calltrace.cycles-pp.bt_iter.blk_mq_queue_tag_busy_iter.blk_mq_in_flight.part_round_stats.blk_account_io_start 0.80 ± 25% +0.9 1.67 ± 19% perf-profile.calltrace.cycles-pp.blk_mq_queue_tag_busy_iter.blk_mq_in_flight.part_round_stats.blk_account_io_start.blk_mq_make_request 0.82 ± 24% +0.9 1.71 ± 19% perf-profile.calltrace.cycles-pp.blk_mq_in_flight.part_round_stats.blk_account_io_start.blk_mq_make_request.generic_make_request 0.82 ± 25% +0.9 1.73 ± 19% perf-profile.calltrace.cycles-pp.part_round_stats.blk_account_io_start.blk_mq_make_request.generic_make_request.submit_bio 0.87 ± 25% +1.0 1.87 ± 14% perf-profile.calltrace.cycles-pp.blk_account_io_start.blk_mq_make_request.generic_make_request.submit_bio.__swap_writepage 2.05 ± 15% +1.4 3.48 ± 7% perf-profile.calltrace.cycles-pp.generic_make_request.submit_bio.__swap_writepage.pageout.shrink_page_list 2.09 ± 15% +1.4 3.53 ± 7% perf-profile.calltrace.cycles-pp.__swap_writepage.pageout.shrink_page_list.shrink_inactive_list.shrink_node_memcg 2.05 ± 15% +1.4 3.49 ± 7% perf-profile.calltrace.cycles-pp.blk_mq_make_request.generic_make_request.submit_bio.__swap_writepage.pageout 2.06 ± 15% +1.4 3.50 ± 7% perf-profile.calltrace.cycles-pp.submit_bio.__swap_writepage.pageout.shrink_page_list.shrink_inactive_list 2.10 ± 15% +1.4 3.54 ± 6% perf-profile.calltrace.cycles-pp.pageout.shrink_page_list.shrink_inactive_list.shrink_node_memcg.shrink_node 3.31 ± 12% +1.5 4.83 ± 5% perf-profile.calltrace.cycles-pp.shrink_page_list.shrink_inactive_list.shrink_node_memcg.shrink_node.do_try_to_free_pages 3.33 ± 12% +1.5 4.86 ± 5% perf-profile.calltrace.cycles-pp.shrink_inactive_list.shrink_node_memcg.shrink_node.do_try_to_free_pages.try_to_free_pages 3.40 ± 12% +1.6 4.97 ± 6% perf-profile.calltrace.cycles-pp.shrink_node_memcg.shrink_node.do_try_to_free_pages.try_to_free_pages.__alloc_pages_slowpath 3.57 ± 12% +1.6 5.19 ± 7% perf-profile.calltrace.cycles-pp.__alloc_pages_nodemask.do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault.__do_page_fault 3.48 ± 12% +1.6 5.13 ± 6% perf-profile.calltrace.cycles-pp.shrink_node.do_try_to_free_pages.try_to_free_pages.__alloc_pages_slowpath.__alloc_pages_nodemask 3.48 ± 12% +1.6 5.13 ± 6% perf-profile.calltrace.cycles-pp.do_try_to_free_pages.try_to_free_pages.__alloc_pages_slowpath.__alloc_pages_nodemask.do_huge_pmd_anonymous_page 3.49 ± 12% +1.6 5.13 ± 6% perf-profile.calltrace.cycles-pp.try_to_free_pages.__alloc_pages_slowpath.__alloc_pages_nodemask.do_huge_pmd_anonymous_page.__handle_mm_fault 3.51 ± 12% +1.7 5.17 ± 6% perf-profile.calltrace.cycles-pp.__alloc_pages_slowpath.__alloc_pages_nodemask.do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault 3.34 ± 14% +2.2 5.57 ± 21% perf-profile.calltrace.cycles-pp.blk_mq_check_inflight.bt_iter.blk_mq_queue_tag_busy_iter.blk_mq_in_flight.part_round_stats 9.14 ± 17% +5.5 14.66 ± 22% perf-profile.calltrace.cycles-pp.bt_iter.blk_mq_queue_tag_busy_iter.blk_mq_in_flight.part_round_stats.blk_account_io_done 12.10 ± 17% +6.8 18.89 ± 20% perf-profile.calltrace.cycles-pp.blk_mq_queue_tag_busy_iter.blk_mq_in_flight.part_round_stats.blk_account_io_done.blk_mq_end_request 13.88 ± 15% +7.1 21.01 ± 20% perf-profile.calltrace.cycles-pp.handle_irq.do_IRQ.ret_from_intr.cpuidle_enter_state.do_idle 13.87 ± 15% +7.1 21.00 ± 20% perf-profile.calltrace.cycles-pp.handle_edge_irq.handle_irq.do_IRQ.ret_from_intr.cpuidle_enter_state 13.97 ± 15% +7.1 21.10 ± 20% perf-profile.calltrace.cycles-pp.ret_from_intr.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary 13.94 ± 15% +7.1 21.07 ± 20% perf-profile.calltrace.cycles-pp.do_IRQ.ret_from_intr.cpuidle_enter_state.do_idle.cpu_startup_entry 12.50 ± 17% +7.2 19.65 ± 20% perf-profile.calltrace.cycles-pp.blk_account_io_done.blk_mq_end_request.blk_mq_complete_request.nvme_irq.__handle_irq_event_percpu 12.70 ± 17% +7.2 19.86 ± 21% perf-profile.calltrace.cycles-pp.blk_mq_end_request.blk_mq_complete_request.nvme_irq.__handle_irq_event_percpu.handle_irq_event_percpu 12.48 ± 17% +7.2 19.65 ± 20% perf-profile.calltrace.cycles-pp.part_round_stats.blk_account_io_done.blk_mq_end_request.blk_mq_complete_request.nvme_irq 12.46 ± 17% +7.2 19.63 ± 21% perf-profile.calltrace.cycles-pp.blk_mq_in_flight.part_round_stats.blk_account_io_done.blk_mq_end_request.blk_mq_complete_request 14.78 ± 18% +8.1 22.83 ± 20% perf-profile.calltrace.cycles-pp.blk_mq_complete_request.nvme_irq.__handle_irq_event_percpu.handle_irq_event_percpu.handle_irq_event 14.87 ± 18% +8.1 22.95 ± 21% perf-profile.calltrace.cycles-pp.nvme_irq.__handle_irq_event_percpu.handle_irq_event_percpu.handle_irq_event.handle_edge_irq 14.89 ± 18% +8.1 22.98 ± 21% perf-profile.calltrace.cycles-pp.handle_irq_event_percpu.handle_irq_event.handle_edge_irq.handle_irq.do_IRQ 14.90 ± 18% +8.1 22.99 ± 21% perf-profile.calltrace.cycles-pp.handle_irq_event.handle_edge_irq.handle_irq.do_IRQ.ret_from_intr 14.88 ± 18% +8.1 22.97 ± 21% perf-profile.calltrace.cycles-pp.__handle_irq_event_percpu.handle_irq_event_percpu.handle_irq_event.handle_edge_irq.handle_irq 4.79 ± 22% -1.3 3.52 ± 9% perf-profile.children.cycles-pp.hrtimer_interrupt 3.04 ± 16% -0.7 2.30 ± 8% perf-profile.children.cycles-pp.__hrtimer_run_queues 1.98 ± 29% -0.7 1.29 ± 7% perf-profile.children.cycles-pp.tick_sched_timer 1.70 ± 27% -0.6 1.14 ± 9% perf-profile.children.cycles-pp.tick_sched_handle 1.57 ± 29% -0.5 1.03 ± 10% perf-profile.children.cycles-pp.update_process_times 3.02 ± 8% -0.5 2.52 ± 10% perf-profile.children.cycles-pp.menu_select 1.19 ± 19% -0.3 0.89 ± 10% perf-profile.children.cycles-pp.tick_nohz_next_event 0.81 ± 25% -0.2 0.56 ± 11% perf-profile.children.cycles-pp.scheduler_tick 0.42 ± 19% -0.1 0.30 ± 14% perf-profile.children.cycles-pp._raw_spin_lock 0.27 ± 13% -0.1 0.21 ± 15% perf-profile.children.cycles-pp.hrtimer_next_event_without 0.11 ± 35% -0.0 0.07 ± 19% perf-profile.children.cycles-pp.run_local_timers 0.10 ± 15% -0.0 0.07 ± 28% perf-profile.children.cycles-pp.cpu_load_update 0.14 ± 9% -0.0 0.11 ± 15% perf-profile.children.cycles-pp.perf_event_task_tick 0.07 ± 17% +0.0 0.10 ± 12% perf-profile.children.cycles-pp.blk_flush_plug_list 0.07 ± 17% +0.0 0.10 ± 12% perf-profile.children.cycles-pp.blk_mq_flush_plug_list 0.06 ± 26% +0.0 0.11 ± 17% perf-profile.children.cycles-pp.read 0.07 ± 17% +0.0 0.11 ± 36% perf-profile.children.cycles-pp.deferred_split_scan 0.15 ± 14% +0.1 0.21 ± 13% perf-profile.children.cycles-pp.blk_mq_sched_dispatch_requests 0.15 ± 16% +0.1 0.21 ± 15% perf-profile.children.cycles-pp.blk_mq_dispatch_rq_list 0.15 ± 14% +0.1 0.22 ± 14% perf-profile.children.cycles-pp.__blk_mq_run_hw_queue 0.08 ± 23% +0.1 0.14 ± 34% perf-profile.children.cycles-pp.shrink_slab 0.08 ± 23% +0.1 0.14 ± 34% perf-profile.children.cycles-pp.do_shrink_slab 0.72 ± 19% +0.3 1.00 ± 8% perf-profile.children.cycles-pp._raw_spin_lock_irqsave 0.44 ± 18% +0.3 0.74 ± 14% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath 0.86 ± 18% +0.4 1.30 ± 9% perf-profile.children.cycles-pp.blk_mq_try_issue_directly 0.88 ± 18% +0.5 1.34 ± 9% perf-profile.children.cycles-pp.__blk_mq_try_issue_directly 0.82 ± 19% +0.5 1.30 ± 9% perf-profile.children.cycles-pp.dma_pool_alloc 1.02 ± 15% +0.5 1.55 ± 9% perf-profile.children.cycles-pp.nvme_queue_rq 1.07 ± 15% +0.7 1.76 ± 21% perf-profile.children.cycles-pp.__indirect_thunk_start 2.42 ± 16% +0.7 3.16 ± 13% perf-profile.children.cycles-pp.find_next_bit 0.95 ± 26% +1.1 2.00 ± 15% perf-profile.children.cycles-pp.blk_account_io_start 2.19 ± 17% +1.5 3.72 ± 8% perf-profile.children.cycles-pp.blk_mq_make_request 2.20 ± 17% +1.5 3.73 ± 8% perf-profile.children.cycles-pp.submit_bio 2.20 ± 17% +1.5 3.73 ± 8% perf-profile.children.cycles-pp.generic_make_request 2.21 ± 17% +1.5 3.76 ± 8% perf-profile.children.cycles-pp.__swap_writepage 2.23 ± 17% +1.5 3.77 ± 7% perf-profile.children.cycles-pp.pageout 3.60 ± 13% +1.6 5.22 ± 7% perf-profile.children.cycles-pp.__alloc_pages_nodemask 3.51 ± 15% +1.6 5.15 ± 6% perf-profile.children.cycles-pp.shrink_page_list 3.48 ± 12% +1.6 5.13 ± 6% perf-profile.children.cycles-pp.do_try_to_free_pages 3.53 ± 14% +1.6 5.17 ± 6% perf-profile.children.cycles-pp.shrink_inactive_list 3.49 ± 12% +1.6 5.13 ± 6% perf-profile.children.cycles-pp.try_to_free_pages 3.51 ± 12% +1.7 5.19 ± 6% perf-profile.children.cycles-pp.__alloc_pages_slowpath 3.61 ± 14% +1.7 5.30 ± 6% perf-profile.children.cycles-pp.shrink_node_memcg 3.69 ± 15% +1.8 5.45 ± 7% perf-profile.children.cycles-pp.shrink_node 4.10 ± 17% +2.4 6.47 ± 18% perf-profile.children.cycles-pp.blk_mq_check_inflight 10.64 ± 16% +6.8 17.39 ± 17% perf-profile.children.cycles-pp.bt_iter 13.17 ± 16% +7.4 20.59 ± 18% perf-profile.children.cycles-pp.blk_account_io_done 13.39 ± 16% +7.4 20.81 ± 19% perf-profile.children.cycles-pp.blk_mq_end_request 15.67 ± 17% +8.2 23.84 ± 20% perf-profile.children.cycles-pp.handle_irq 15.66 ± 17% +8.2 23.83 ± 20% perf-profile.children.cycles-pp.handle_edge_irq 15.57 ± 17% +8.2 23.73 ± 20% perf-profile.children.cycles-pp.nvme_irq 15.60 ± 17% +8.2 23.77 ± 20% perf-profile.children.cycles-pp.handle_irq_event 15.58 ± 17% +8.2 23.75 ± 20% perf-profile.children.cycles-pp.__handle_irq_event_percpu 15.59 ± 17% +8.2 23.77 ± 20% perf-profile.children.cycles-pp.handle_irq_event_percpu 15.75 ± 17% +8.2 23.93 ± 20% perf-profile.children.cycles-pp.ret_from_intr 15.73 ± 17% +8.2 23.91 ± 20% perf-profile.children.cycles-pp.do_IRQ 15.54 ± 17% +8.2 23.73 ± 19% perf-profile.children.cycles-pp.blk_mq_complete_request 14.07 ± 16% +8.4 22.45 ± 16% perf-profile.children.cycles-pp.part_round_stats 14.05 ± 16% +8.4 22.45 ± 16% perf-profile.children.cycles-pp.blk_mq_queue_tag_busy_iter 14.05 ± 16% +8.4 22.45 ± 16% perf-profile.children.cycles-pp.blk_mq_in_flight 0.38 ± 20% -0.1 0.28 ± 16% perf-profile.self.cycles-pp._raw_spin_lock 0.10 ± 13% -0.0 0.07 ± 17% perf-profile.self.cycles-pp.idle_cpu 0.12 ± 14% -0.0 0.09 ± 7% perf-profile.self.cycles-pp.perf_mux_hrtimer_handler 0.10 ± 15% -0.0 0.07 ± 28% perf-profile.self.cycles-pp.cpu_load_update 0.14 ± 9% -0.0 0.11 ± 15% perf-profile.self.cycles-pp.perf_event_task_tick 0.62 ± 16% +0.3 0.89 ± 12% perf-profile.self.cycles-pp.dma_pool_alloc 0.44 ± 18% +0.3 0.74 ± 14% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath 0.81 ± 16% +0.5 1.32 ± 25% perf-profile.self.cycles-pp.__indirect_thunk_start 2.07 ± 16% +0.6 2.69 ± 12% perf-profile.self.cycles-pp.find_next_bit 1.77 ± 16% +1.1 2.91 ± 15% perf-profile.self.cycles-pp.blk_mq_queue_tag_busy_iter 3.82 ± 16% +2.2 6.00 ± 18% perf-profile.self.cycles-pp.blk_mq_check_inflight 6.43 ± 15% +4.1 10.56 ± 16% perf-profile.self.cycles-pp.bt_iter vm-scalability.time.system_time 600 +-+-------------------------------------------------------------------+ | | 500 +-O OO | O O OO | | O O O O O O | 400 +-+ O O O O | | | 300 +-+ .+.++. .+ .+ .+ .+.+ +.+ .++.+.++ .++.+.++. | | ++ + :.+ + + + : +.+ : +.+ + .++.+ +.+ .| 200 +-+ + + : : : : + + | |: : : : : | |: :: : : | 100 +-+ :: :: | | : : | 0 +-+-------------------------------------------------------------------+ vm-scalability.time.maximum_resident_set_size 2.5e+07 +-+---------------------------------------------------------------+ | | | ++.++.++.+. +. +. + +.++.+ +.++.+ .+.++. .++. .++.+ .+ | 2e+07 +-+ + .+ + +.+: : : : + ++ + + +.| | : + : : : : | | : : : : : | 1.5e+07 O-+O OO: : : : | |: O O O O : : : : | 1e+07 +-+ O O O O OO O : : : : | |:O O :: :: | |: :: :: | 5e+06 +-+ : : | | : : | | : : | 0 +-+---------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Rong Chen

1 year, 9 months

8
75
0 / 0

[page cache] eb797a8ee0: vm-scalability.throughput -16.5% regression

by kernel test robot

Greeting, FYI, we noticed a -16.5% regression of vm-scalability.throughput due to commit: commit: eb797a8ee0ab4cd03df556980ce7bf167cadaa50 ("page cache: Rearrange address_space") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master in testcase: vm-scalability on test machine: 80 threads Skylake with 64G memory with following parameters: runtime: 300s test: small-allocs cpufreq_governor: performance test-description: The motivation behind this suite is to exercise functions and regions of the mm/ of the Linux kernel which are of interest to us. test-url: https://git.kernel.org/cgit/linux/kernel/git/wfg/vm-scalability.git/ In addition to that, the commit also has significant impact on the following tests: +------------------+----------------------------------------------------------------------+ | testcase: change | unixbench: unixbench.score 20.9% improvement | | test machine | 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 64G memory | | test parameters | cpufreq_governor=performance | | | nr_task=100% | | | runtime=300s | | | test=shell8 | | | ucode=0xb00002e | +------------------+----------------------------------------------------------------------+ Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml ========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/runtime/tbox_group/test/testcase: gcc-7/performance/x86_64-rhel-7.2/debian-x86_64-2018-04-03.cgz/300s/lkp-skl-2sp2/small-allocs/vm-scalability commit: f32f004cdd ("ida: Convert to XArray") eb797a8ee0 ("page cache: Rearrange address_space") f32f004cddf86d63 eb797a8ee0ab4cd03df556980c ---------------- -------------------------- fail:runs %reproduction fail:runs | | | 3:4 -13% 3:4 perf-profile.calltrace.cycles-pp.error_entry 3:4 -12% 3:4 perf-profile.children.cycles-pp.error_entry 1:4 -6% 1:4 perf-profile.self.cycles-pp.error_entry %stddev %change %stddev \ | \ 235891 -16.5% 197085 vm-scalability.median 18881481 -16.5% 15769081 vm-scalability.throughput 316.19 +14.4% 361.58 vm-scalability.time.elapsed_time 316.19 +14.4% 361.58 vm-scalability.time.elapsed_time.max 22924 +15.9% 26576 vm-scalability.time.system_time 3254041 ± 9% +36.4% 4437311 ± 3% vm-scalability.time.voluntary_context_switches 277831 ± 3% +9.5% 304359 interrupts.CAL:Function_call_interrupts 102367 ± 2% +10.1% 112694 ± 2% meminfo.Shmem 6.67 ± 5% -0.9 5.76 ± 2% mpstat.cpu.usr% 0.49 -5.0% 0.46 pmeter.Average_Active_Power 38678749 -12.1% 34005251 pmeter.performance_per_watt 2621420 ± 38% +59.2% 4173292 ± 3% turbostat.C1 62964314 ± 10% +18.7% 74735975 turbostat.IRQ 20821 ± 10% +20.6% 25103 ± 2% vmstat.system.cs 192700 ± 8% +5.9% 204006 vmstat.system.in 76742 +3.7% 79550 proc-vmstat.nr_active_anon 25578 ± 2% +10.1% 28154 ± 2% proc-vmstat.nr_shmem 76742 +3.7% 79550 proc-vmstat.nr_zone_active_anon 34211075 ± 14% +28.7% 44023085 ± 3% cpuidle.C1.time 2628057 ± 37% +59.1% 4179955 ± 3% cpuidle.C1.usage 200488 ± 20% +75.5% 351836 ± 13% cpuidle.POLL.time 57706 ± 49% +93.1% 111419 ± 18% cpuidle.POLL.usage 2.08 ± 14% +20.7% 2.51 ± 4% sched_debug.cfs_rq:/.nr_spread_over.avg 50.05 ± 36% -38.0% 31.04 ± 24% sched_debug.cpu.cpu_load[1].max 0.25 ± 14% +17.4% 0.29 ± 7% sched_debug.cpu.nr_running.stddev 42905 ± 12% +26.2% 54143 ± 3% sched_debug.cpu.nr_switches.avg 19996 ± 17% +43.0% 28586 ± 7% sched_debug.cpu.nr_switches.min 43774 ± 12% +26.5% 55370 ± 3% sched_debug.cpu.sched_count.avg 20285 ± 17% +43.1% 29024 ± 8% sched_debug.cpu.sched_count.min 19949 ± 12% +28.0% 25530 ± 3% sched_debug.cpu.sched_goidle.avg 9260 ± 16% +44.9% 13422 ± 8% sched_debug.cpu.sched_goidle.min 23108 ± 12% +26.0% 29110 ± 3% sched_debug.cpu.ttwu_count.avg 25905 ± 11% +25.8% 32593 ± 2% sched_debug.cpu.ttwu_count.max 21683 ± 12% +26.0% 27323 ± 3% sched_debug.cpu.ttwu_count.min 73.74 -3.6 70.12 perf-stat.cache-miss-rate% 2.83e+10 ± 2% +5.5% 2.985e+10 perf-stat.cache-misses 3.838e+10 +10.9% 4.257e+10 perf-stat.cache-references 6787110 ± 9% +35.5% 9197959 ± 3% perf-stat.context-switches 3.17 +11.1% 3.52 perf-stat.cpi 7.609e+13 +14.5% 8.715e+13 perf-stat.cpu-cycles 21380 +11.1% 23753 perf-stat.cpu-migrations 0.08 -0.0 0.07 perf-stat.dTLB-load-miss-rate% 6.634e+12 +3.8% 6.888e+12 perf-stat.dTLB-loads 0.13 -0.0 0.12 perf-stat.dTLB-store-miss-rate% 1.135e+09 -5.6% 1.071e+09 perf-stat.dTLB-store-misses 2.184e+09 -2.3% 2.135e+09 perf-stat.iTLB-load-misses 2.404e+13 +3.1% 2.479e+13 perf-stat.instructions 11006 +5.5% 11614 perf-stat.instructions-per-iTLB-miss 0.32 -10.0% 0.28 perf-stat.ipc 2.898e+09 +15.2% 3.337e+09 ± 2% perf-stat.node-load-misses 7.235e+08 +19.1% 8.615e+08 ± 4% perf-stat.node-store-misses 4975 +5.3% 5236 perf-stat.path-length 1.10 -0.1 0.97 ± 2% perf-profile.calltrace.cycles-pp.rwsem_spin_on_owner.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.vma_link 0.68 ± 2% -0.1 0.59 perf-profile.calltrace.cycles-pp.vma_interval_tree_insert.vma_link.mmap_region.do_mmap.vm_mmap_pgoff 0.59 ± 3% -0.0 0.55 ± 2% perf-profile.calltrace.cycles-pp.swapgs_restore_regs_and_return_to_usermode 1.04 ± 5% +0.1 1.19 ± 3% perf-profile.calltrace.cycles-pp.task_numa_work.task_work_run.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.04 ± 5% +0.1 1.19 ± 3% perf-profile.calltrace.cycles-pp.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.04 ± 5% +0.1 1.19 ± 3% perf-profile.calltrace.cycles-pp.task_work_run.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.64 ± 2% +0.4 2.00 perf-profile.calltrace.cycles-pp.page_fault 1.57 ± 2% +0.4 1.93 perf-profile.calltrace.cycles-pp.__do_page_fault.do_page_fault.page_fault 1.59 ± 2% +0.4 1.96 perf-profile.calltrace.cycles-pp.do_page_fault.page_fault 0.65 +0.5 1.19 ± 3% perf-profile.calltrace.cycles-pp.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 +1.0 1.03 ± 4% perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 1.10 -0.1 0.97 ± 2% perf-profile.children.cycles-pp.rwsem_spin_on_owner 0.68 ± 2% -0.1 0.59 perf-profile.children.cycles-pp.vma_interval_tree_insert 0.62 ± 2% -0.1 0.55 ± 2% perf-profile.children.cycles-pp.native_irq_return_iret 0.47 -0.1 0.41 perf-profile.children.cycles-pp.sync_regs 0.32 ± 4% -0.1 0.27 ± 3% perf-profile.children.cycles-pp.get_unmapped_area 0.26 ± 3% -0.1 0.21 ± 3% perf-profile.children.cycles-pp.__perf_sw_event 0.21 ± 4% -0.0 0.17 ± 5% perf-profile.children.cycles-pp.find_vma 0.27 ± 3% -0.0 0.22 ± 3% perf-profile.children.cycles-pp.unmapped_area_topdown 0.11 ± 42% -0.0 0.07 ± 7% perf-profile.children.cycles-pp.syscall_return_via_sysret 0.29 ± 2% -0.0 0.24 ± 3% perf-profile.children.cycles-pp.arch_get_unmapped_area_topdown 0.19 ± 4% -0.0 0.15 ± 2% perf-profile.children.cycles-pp.___perf_sw_event 0.13 ± 3% -0.0 0.10 ± 4% perf-profile.children.cycles-pp.vma_policy_mof 0.59 ± 3% -0.0 0.56 ± 2% perf-profile.children.cycles-pp.swapgs_restore_regs_and_return_to_usermode 0.16 ± 2% -0.0 0.13 perf-profile.children.cycles-pp.__rb_insert_augmented 0.19 ± 2% -0.0 0.17 ± 4% perf-profile.children.cycles-pp.perf_event_mmap 0.08 ± 10% -0.0 0.06 ± 6% perf-profile.children.cycles-pp.vmacache_find 0.08 ± 10% -0.0 0.06 ± 6% perf-profile.children.cycles-pp.__fget 0.08 -0.0 0.07 ± 6% perf-profile.children.cycles-pp.d_path 0.09 ± 4% +0.0 0.13 ± 3% perf-profile.children.cycles-pp.__vma_link_rb 0.01 ±173% +0.1 0.12 ± 4% perf-profile.children.cycles-pp.osq_unlock 1.19 ± 3% +0.2 1.36 ± 2% perf-profile.children.cycles-pp.exit_to_usermode_loop 1.19 ± 3% +0.2 1.36 ± 2% perf-profile.children.cycles-pp.task_work_run 1.19 ± 3% +0.2 1.36 ± 2% perf-profile.children.cycles-pp.task_numa_work 1.66 ± 2% +0.4 2.01 perf-profile.children.cycles-pp.page_fault 1.59 ± 2% +0.4 1.96 perf-profile.children.cycles-pp.do_page_fault 1.58 ± 2% +0.4 1.95 perf-profile.children.cycles-pp.__do_page_fault 0.66 +0.5 1.20 ± 4% perf-profile.children.cycles-pp.handle_mm_fault 0.47 +0.6 1.04 ± 4% perf-profile.children.cycles-pp.__handle_mm_fault 1.09 -0.1 0.96 ± 2% perf-profile.self.cycles-pp.rwsem_spin_on_owner 0.67 ± 2% -0.1 0.59 ± 2% perf-profile.self.cycles-pp.vma_interval_tree_insert 0.62 ± 2% -0.1 0.55 ± 3% perf-profile.self.cycles-pp.native_irq_return_iret 0.46 -0.1 0.40 perf-profile.self.cycles-pp.sync_regs 0.43 -0.1 0.37 ± 2% perf-profile.self.cycles-pp.swapgs_restore_regs_and_return_to_usermode 0.30 ± 5% -0.1 0.25 ± 3% perf-profile.self.cycles-pp.__do_page_fault 0.11 ± 42% -0.0 0.07 ± 7% perf-profile.self.cycles-pp.syscall_return_via_sysret 0.27 ± 3% -0.0 0.22 ± 3% perf-profile.self.cycles-pp.unmapped_area_topdown 0.17 ± 3% -0.0 0.13 ± 3% perf-profile.self.cycles-pp.___perf_sw_event 0.14 ± 8% -0.0 0.11 perf-profile.self.cycles-pp.mmap_region 0.18 ± 2% -0.0 0.15 ± 2% perf-profile.self.cycles-pp.handle_mm_fault 0.15 -0.0 0.12 ± 4% perf-profile.self.cycles-pp.__rb_insert_augmented 0.12 ± 4% -0.0 0.10 ± 7% perf-profile.self.cycles-pp.find_vma 0.08 ± 5% -0.0 0.06 perf-profile.self.cycles-pp.vma_policy_mof 0.08 ± 8% -0.0 0.06 ± 6% perf-profile.self.cycles-pp.vmacache_find 0.08 ± 10% -0.0 0.06 ± 6% perf-profile.self.cycles-pp.__fget 0.07 ± 6% -0.0 0.05 ± 8% perf-profile.self.cycles-pp.__perf_sw_event 0.06 -0.0 0.05 perf-profile.self.cycles-pp.d_path 0.08 ± 5% +0.0 0.10 ± 7% perf-profile.self.cycles-pp.down_write 0.11 ± 4% +0.0 0.16 ± 2% perf-profile.self.cycles-pp.up_write 0.00 +0.1 0.08 ± 5% perf-profile.self.cycles-pp.__vma_link_rb 0.18 ± 9% +0.1 0.28 ± 6% perf-profile.self.cycles-pp.rwsem_down_write_failed 0.01 ±173% +0.1 0.12 ± 4% perf-profile.self.cycles-pp.osq_unlock 1.05 ± 4% +0.2 1.26 ± 2% perf-profile.self.cycles-pp.task_numa_work 0.35 ± 2% +0.6 0.95 ± 5% perf-profile.self.cycles-pp.__handle_mm_fault vm-scalability.time.system_time 30000 +-+-----------------------------------------------------------------+ | O O | 25000 O-O O O O O O O O O O O O O O O O O O O O O | |.+..+.+..+.+..+.+.+..+.+..+.+..+.+ .+..+.+.+..+.+..+.+..+.| | : + + | 20000 +-+ : : : | | : :: : | 15000 +-+ : : : : | | : : : : | 10000 +-+ : : : : | | : : : : | | : : : : | 5000 +-+ :: :: | | : : | 0 +-+-----------------------------------------------------------------+ vm-scalability.time.elapsed_time 400 +-+-------------------------------------------------------------------+ O O O O O O O O O O O O O O O O O O O O O O O O | 350 +-+ | 300 +-++.+..+.+..+.+..+.+..+.+..+.+..+.+ + +..+.+..+.+..+.+..+.+..+.| | : : : | 250 +-+ : :: : | | : : : : | 200 +-+ : : : : | | : : : : | 150 +-+ : : : : | 100 +-+ : : : : | | : : : : | 50 +-+ :: :: | | : : | 0 +-+-------------------------------------------------------------------+ vm-scalability.time.elapsed_time.max 400 +-+-------------------------------------------------------------------+ O O O O O O O O O O O O O O O O O O O O O O O O | 350 +-+ | 300 +-++.+..+.+..+.+..+.+..+.+..+.+..+.+ + +..+.+..+.+..+.+..+.+..+.| | : : : | 250 +-+ : :: : | | : : : : | 200 +-+ : : : : | | : : : : | 150 +-+ : : : : | 100 +-+ : : : : | | : : : : | 50 +-+ :: :: | | : : | 0 +-+-------------------------------------------------------------------+ vm-scalability.throughput 2e+07 +-+---------------------------------------------------------------+ 1.8e+07 +-+..+.+.+..+.+..+.+.+..+.+.+..+.+ + +..+.+..+.+.+..+.+.+..+.| | : : : | 1.6e+07 O-O O O O O O O O O O O O O O O O O O O O O O O | 1.4e+07 +-+ : :: : | | : : : : | 1.2e+07 +-+ : : : : | 1e+07 +-+ : : : : | 8e+06 +-+ : : : : | | : : : : | 6e+06 +-+ : : : : | 4e+06 +-+ :: : | | : : | 2e+06 +-+ : : | 0 +-+---------------------------------------------------------------+ vm-scalability.median 250000 +-+----------------------------------------------------------------+ |.+..+.+..+.+.+..+.+..+.+.+..+ + + +.+..+.+..+.+.+..+.+..+.| | : : : | 200000 O-O O O O O O O O O O O O O O O O O O O O O O O | | : :: : | | : : : : | 150000 +-+ : : : : | | : : : : | 100000 +-+ : : : : | | : : : : | | : : : : | 50000 +-+ : :: | | : : | | : : | 0 +-+----------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample *************************************************************************************************** lkp-bdw-ep3b: 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 64G memory ========================================================================================= compiler/cpufreq_governor/kconfig/nr_task/rootfs/runtime/tbox_group/test/testcase/ucode: gcc-7/performance/x86_64-rhel-7.2/100%/debian-x86_64-2018-04-03.cgz/300s/lkp-bdw-ep3b/shell8/unixbench/0xb00002e commit: f32f004cdd ("ida: Convert to XArray") eb797a8ee0 ("page cache: Rearrange address_space") f32f004cddf86d63 eb797a8ee0ab4cd03df556980c ---------------- -------------------------- fail:runs %reproduction fail:runs | | | :4 25% 1:4 dmesg.WARNING:at_ip___perf_sw_event/0x :4 25% 1:4 dmesg.WARNING:at_ip__slab_free/0x :4 25% 1:4 dmesg.WARNING:at_ip_filename_lookup/0x 1:4 -25% :4 dmesg.WARNING:at_ip_fsnotify/0x 1:4 -25% :4 dmesg.WARNING:at_ip_perf_event_mmap_output/0x 1:4 9% 2:4 perf-profile.children.cycles-pp.error_entry 1:4 7% 1:4 perf-profile.self.cycles-pp.error_entry %stddev %change %stddev \ | \ 39940 +20.9% 48288 unixbench.score 641.38 +1.0% 647.51 unixbench.time.elapsed_time 641.38 +1.0% 647.51 unixbench.time.elapsed_time.max 24220392 +29.1% 31263367 ± 2% unixbench.time.involuntary_context_switches 1.836e+09 +20.8% 2.217e+09 unixbench.time.minor_page_faults 7052 +2.1% 7200 unixbench.time.percent_of_cpu_this_job_got 36337 -2.7% 35347 unixbench.time.system_time 8893 +26.8% 11279 ± 2% unixbench.time.user_time 85632909 +4.3% 89281018 unixbench.time.voluntary_context_switches 15301176 +21.7% 18622462 unixbench.workload 42884872 +19.0% 51033794 softirqs.RCU 43387938 ± 6% -12.9% 37797790 ± 2% cpuidle.C1.usage 1155156 ± 4% -24.0% 878414 ± 4% cpuidle.POLL.usage 152008 ± 9% +15.2% 175048 ± 7% meminfo.DirectMap4k 255196 +13.6% 289806 meminfo.Shmem 100.25 +26.7% 127.00 ± 2% vmstat.procs.r 337268 +3.6% 349315 vmstat.system.cs 19.30 -1.7 17.59 mpstat.cpu.idle% 0.01 ± 30% +0.0 0.02 ± 35% mpstat.cpu.iowait% 15.54 +3.6 19.11 mpstat.cpu.usr% 7.086e+08 +20.8% 8.56e+08 ± 2% numa-numastat.node0.local_node 7.086e+08 +20.8% 8.561e+08 ± 2% numa-numastat.node0.numa_hit 7.053e+08 +21.3% 8.558e+08 numa-numastat.node1.local_node 7.053e+08 +21.3% 8.558e+08 numa-numastat.node1.numa_hit 2274 +2.1% 2322 turbostat.Avg_MHz 43383925 ± 6% -12.9% 37793914 ± 2% turbostat.C1 14.41 ± 2% -17.4% 11.90 ± 7% turbostat.CPU%c1 243.24 +2.2% 248.48 turbostat.PkgWatt 14.16 +8.1% 15.30 turbostat.RAMWatt 6807 ± 4% +48.1% 10084 ± 5% slabinfo.files_cache.active_objs 6807 ± 4% +48.2% 10090 ± 5% slabinfo.files_cache.num_objs 3616 +23.8% 4475 ± 5% slabinfo.kmalloc-256.active_objs 3616 +23.8% 4475 ± 5% slabinfo.kmalloc-256.num_objs 17134 ± 4% +13.8% 19493 ± 2% slabinfo.proc_inode_cache.active_objs 17134 ± 4% +14.0% 19524 ± 2% slabinfo.proc_inode_cache.num_objs 3393 ± 6% +17.7% 3994 ± 3% slabinfo.sock_inode_cache.active_objs 3393 ± 6% +17.7% 3994 ± 3% slabinfo.sock_inode_cache.num_objs 1241 ± 8% +15.0% 1427 ± 6% slabinfo.task_group.active_objs 1241 ± 8% +15.0% 1427 ± 6% slabinfo.task_group.num_objs 713963 ± 14% -20.9% 564405 ± 4% numa-meminfo.node0.FilePages 20539 ± 9% -19.7% 16496 ± 15% numa-meminfo.node0.Mapped 1281514 ± 9% -10.6% 1145886 ± 4% numa-meminfo.node0.MemUsed 683.75 ± 11% +54.1% 1053 ± 12% numa-meminfo.node0.Mlocked 48239 ± 4% -19.8% 38686 ± 17% numa-meminfo.node0.SReclaimable 669804 ± 15% +27.8% 856173 ± 3% numa-meminfo.node1.FilePages 4719 ± 56% +227.5% 15456 ± 43% numa-meminfo.node1.Inactive 4644 ± 57% +232.0% 15419 ± 43% numa-meminfo.node1.Inactive(anon) 14609 ± 12% +47.2% 21499 ± 11% numa-meminfo.node1.Mapped 40126 ± 6% +29.6% 52000 ± 12% numa-meminfo.node1.SReclaimable 119605 ± 96% +131.3% 276593 ± 3% numa-meminfo.node1.Shmem 130207 +18.0% 153583 ± 5% numa-meminfo.node1.Slab 547652 ± 4% +5.4% 577200 ± 4% numa-meminfo.node1.Unevictable 178549 ± 14% -21.0% 141123 ± 4% numa-vmstat.node0.nr_file_pages 5179 ± 9% -20.3% 4130 ± 16% numa-vmstat.node0.nr_mapped 170.50 ± 12% +54.5% 263.50 ± 13% numa-vmstat.node0.nr_mlock 12061 ± 4% -19.8% 9670 ± 17% numa-vmstat.node0.nr_slab_reclaimable 3.542e+08 +21.5% 4.304e+08 ± 2% numa-vmstat.node0.numa_hit 3.542e+08 +21.5% 4.304e+08 ± 2% numa-vmstat.node0.numa_local 167459 ± 15% +27.9% 214111 ± 3% numa-vmstat.node1.nr_file_pages 1150 ± 57% +234.3% 3845 ± 44% numa-vmstat.node1.nr_inactive_anon 3673 ± 11% +49.4% 5488 ± 13% numa-vmstat.node1.nr_mapped 29911 ± 96% +131.3% 69188 ± 3% numa-vmstat.node1.nr_shmem 10036 ± 6% +29.5% 13000 ± 12% numa-vmstat.node1.nr_slab_reclaimable 22541 +12.7% 25401 ± 3% numa-vmstat.node1.nr_slab_unreclaimable 136898 ± 4% +5.4% 144317 ± 4% numa-vmstat.node1.nr_unevictable 1150 ± 57% +234.3% 3845 ± 44% numa-vmstat.node1.nr_zone_inactive_anon 136898 ± 4% +5.4% 144317 ± 4% numa-vmstat.node1.nr_zone_unevictable 3.525e+08 +22.0% 4.301e+08 ± 2% numa-vmstat.node1.numa_hit 3.523e+08 +22.0% 4.299e+08 ± 2% numa-vmstat.node1.numa_local 149893 +6.3% 159383 proc-vmstat.nr_active_anon 345938 +2.7% 355212 proc-vmstat.nr_file_pages 6075 +9.3% 6643 proc-vmstat.nr_inactive_anon 30490 +2.2% 31159 proc-vmstat.nr_kernel_stack 8870 +8.1% 9585 proc-vmstat.nr_mapped 9254 +2.3% 9471 proc-vmstat.nr_page_table_pages 63803 +13.6% 72460 proc-vmstat.nr_shmem 22097 +2.6% 22671 proc-vmstat.nr_slab_reclaimable 47965 +6.9% 51274 proc-vmstat.nr_slab_unreclaimable 149893 +6.3% 159383 proc-vmstat.nr_zone_active_anon 6075 +9.3% 6643 proc-vmstat.nr_zone_inactive_anon 1.414e+09 +21.1% 1.712e+09 proc-vmstat.numa_hit 1.414e+09 +21.1% 1.712e+09 proc-vmstat.numa_local 47447 +10.8% 52569 proc-vmstat.pgactivate 1.487e+09 +21.1% 1.801e+09 proc-vmstat.pgalloc_normal 1.846e+09 +20.7% 2.228e+09 proc-vmstat.pgfault 1.487e+09 +21.1% 1.801e+09 proc-vmstat.pgfree 63795 +20.6% 76962 proc-vmstat.thp_deferred_split_page 63790 +20.6% 76940 proc-vmstat.thp_fault_alloc 26894638 +20.9% 32515246 proc-vmstat.unevictable_pgs_culled 1.556e+13 +4.9% 1.632e+13 perf-stat.branch-instructions 1.54 +0.2 1.75 perf-stat.branch-miss-rate% 2.399e+11 +19.4% 2.863e+11 perf-stat.branch-misses 1.034e+11 +17.1% 1.21e+11 ± 2% perf-stat.cache-misses 9.784e+11 +18.6% 1.161e+12 perf-stat.cache-references 2.18e+08 +4.6% 2.281e+08 perf-stat.context-switches 1.60 -1.0% 1.59 perf-stat.cpi 1.281e+14 +3.2% 1.322e+14 perf-stat.cpu-cycles 46095973 +22.0% 56220581 perf-stat.cpu-migrations 0.19 +0.0 0.23 ± 2% perf-stat.dTLB-load-miss-rate% 4.148e+10 +23.3% 5.113e+10 ± 2% perf-stat.dTLB-load-misses 2.213e+13 +2.1% 2.261e+13 perf-stat.dTLB-loads 5.537e+09 +22.2% 6.767e+09 ± 2% perf-stat.dTLB-store-misses 8.001e+12 +20.3% 9.625e+12 perf-stat.dTLB-stores 2.034e+10 +20.1% 2.443e+10 perf-stat.iTLB-load-misses 1.3e+10 +17.1% 1.522e+10 perf-stat.iTLB-loads 7.991e+13 +4.3% 8.332e+13 perf-stat.instructions 3929 -13.2% 3411 perf-stat.instructions-per-iTLB-miss 1.81e+09 +20.7% 2.184e+09 perf-stat.minor-faults 91.68 -2.3 89.39 perf-stat.node-load-miss-rate% 3.395e+10 +14.5% 3.889e+10 perf-stat.node-load-misses 3.083e+09 +49.7% 4.616e+09 ± 3% perf-stat.node-loads 1.018e+10 +20.2% 1.224e+10 ± 2% perf-stat.node-store-misses 8.896e+09 +21.3% 1.079e+10 ± 2% perf-stat.node-stores 1.81e+09 +20.7% 2.184e+09 perf-stat.page-faults 5222880 -14.3% 4475405 perf-stat.path-length 1942 ± 7% +37.3% 2665 ± 18% sched_debug.cfs_rq:/.exec_clock.stddev 47.72 ± 7% +18.8% 56.67 ± 2% sched_debug.cfs_rq:/.load_avg.avg 4.95 ± 9% +44.0% 7.14 ± 7% sched_debug.cfs_rq:/.load_avg.min 265960 ± 8% +36.3% 362493 ± 15% sched_debug.cfs_rq:/.min_vruntime.stddev 0.33 ± 6% -11.5% 0.29 ± 5% sched_debug.cfs_rq:/.nr_running.stddev 2.77 ± 7% +88.4% 5.23 ± 3% sched_debug.cfs_rq:/.nr_spread_over.avg 7.18 ± 5% +79.1% 12.86 ± 15% sched_debug.cfs_rq:/.nr_spread_over.max 0.27 ± 52% +358.3% 1.25 ± 25% sched_debug.cfs_rq:/.nr_spread_over.min 1.57 ± 2% +40.9% 2.21 ± 2% sched_debug.cfs_rq:/.nr_spread_over.stddev 27.36 ± 5% +13.2% 30.98 ± 6% sched_debug.cfs_rq:/.removed.load_avg.avg 1263 ± 5% +14.1% 1442 ± 6% sched_debug.cfs_rq:/.removed.runnable_sum.avg 265962 ± 8% +36.3% 362499 ± 15% sched_debug.cfs_rq:/.spread0.stddev 8169 ± 28% +64.2% 13411 ± 21% sched_debug.cpu.avg_idle.min 298.80 ± 11% +57.4% 470.43 ± 28% sched_debug.cpu.cpu_load[0].max 7.46 ± 5% +34.4% 10.03 ± 12% sched_debug.cpu.cpu_load[1].avg 212.55 ± 15% +52.5% 324.14 ± 17% sched_debug.cpu.cpu_load[1].max 25.69 ± 9% +52.4% 39.15 ± 19% sched_debug.cpu.cpu_load[1].stddev 7.18 ± 3% +32.7% 9.53 ± 5% sched_debug.cpu.cpu_load[2].avg 151.27 ± 16% +51.9% 229.80 ± 11% sched_debug.cpu.cpu_load[2].max 19.45 ± 11% +50.2% 29.22 ± 10% sched_debug.cpu.cpu_load[2].stddev 6.92 ± 2% +29.5% 8.96 ± 4% sched_debug.cpu.cpu_load[3].avg 106.45 ± 23% +52.6% 162.50 ± 15% sched_debug.cpu.cpu_load[3].max 14.94 ± 15% +48.0% 22.10 ± 10% sched_debug.cpu.cpu_load[3].stddev 6.45 ± 2% +25.9% 8.12 ± 6% sched_debug.cpu.cpu_load[4].avg 79.82 ± 34% +56.2% 124.64 ± 25% sched_debug.cpu.cpu_load[4].max 11.70 ± 23% +47.3% 17.23 ± 17% sched_debug.cpu.cpu_load[4].stddev 422565 ± 24% +22.7% 518276 ± 15% sched_debug.cpu.load.max 0.00 ± 3% +23.4% 0.00 ± 14% sched_debug.cpu.next_balance.stddev 1.14 ± 5% +31.4% 1.50 ± 7% sched_debug.cpu.nr_running.avg 3.16 ± 2% +38.1% 4.36 ± 9% sched_debug.cpu.nr_running.max 0.71 ± 2% +33.7% 0.95 ± 7% sched_debug.cpu.nr_running.stddev 39284 ± 7% +47.6% 57979 ± 20% sched_debug.cpu.nr_switches.stddev 1658 ± 12% +73.9% 2884 ± 11% sched_debug.cpu.nr_uninterruptible.max -1902 +212.1% -5938 sched_debug.cpu.nr_uninterruptible.min 716.66 ± 9% +107.5% 1487 ± 30% sched_debug.cpu.nr_uninterruptible.stddev 43221 ± 7% +46.5% 63340 ± 18% sched_debug.cpu.sched_count.stddev 351785 ± 3% -14.1% 302212 sched_debug.cpu.sched_goidle.min 21765 ± 7% +51.5% 32969 ± 24% sched_debug.cpu.sched_goidle.stddev 148360 +23.9% 183753 ± 2% sched_debug.cpu.ttwu_local.avg 152765 +24.4% 190065 ± 2% sched_debug.cpu.ttwu_local.max 2051 ± 10% +87.1% 3838 ± 32% sched_debug.cpu.ttwu_local.stddev 0.00 ± 25% +2.1e+05% 0.56 ± 46% sched_debug.rt_rq:/.rt_time.avg 0.02 ± 25% +2.1e+05% 49.46 ± 46% sched_debug.rt_rq:/.rt_time.max 0.00 ± 25% +2.1e+05% 5.24 ± 46% sched_debug.rt_rq:/.rt_time.stddev 20.84 ± 2% -4.4 16.42 ± 3% perf-profile.calltrace.cycles-pp.osq_lock.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.unlink_file_vma 21.69 ± 2% -4.4 17.32 ± 2% perf-profile.calltrace.cycles-pp.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.unlink_file_vma.free_pgtables 17.27 ± 2% -3.4 13.86 ± 3% perf-profile.calltrace.cycles-pp.call_rwsem_down_write_failed.down_write.unlink_file_vma.free_pgtables.exit_mmap 17.44 -3.4 14.05 ± 3% perf-profile.calltrace.cycles-pp.down_write.unlink_file_vma.free_pgtables.exit_mmap.mmput 36.96 -3.1 33.88 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe 36.94 -3.1 33.87 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe 12.69 -2.2 10.53 ± 2% perf-profile.calltrace.cycles-pp.vm_mmap_pgoff.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe 12.71 -2.2 10.55 ± 2% perf-profile.calltrace.cycles-pp.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe 13.36 -2.0 11.41 perf-profile.calltrace.cycles-pp.mmap_region.do_mmap.vm_mmap_pgoff.ksys_mmap_pgoff.do_syscall_64 8.96 ± 2% -1.9 7.03 ± 3% perf-profile.calltrace.cycles-pp.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.__vma_adjust.__split_vma 8.63 ± 2% -1.9 6.71 ± 3% perf-profile.calltrace.cycles-pp.osq_lock.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.__vma_adjust 13.61 -1.9 11.71 perf-profile.calltrace.cycles-pp.do_mmap.vm_mmap_pgoff.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe 8.11 -1.8 6.36 ± 3% perf-profile.calltrace.cycles-pp.osq_lock.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.copy_process 8.44 -1.7 6.70 ± 2% perf-profile.calltrace.cycles-pp.call_rwsem_down_write_failed.down_write.copy_process._do_fork.do_syscall_64 8.44 -1.7 6.70 ± 2% perf-profile.calltrace.cycles-pp.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.copy_process._do_fork 8.50 -1.7 6.76 ± 2% perf-profile.calltrace.cycles-pp.down_write.copy_process._do_fork.do_syscall_64.entry_SYSCALL_64_after_hwframe 8.70 ± 2% -1.7 7.01 ± 3% perf-profile.calltrace.cycles-pp.unlink_file_vma.free_pgtables.exit_mmap.mmput.flush_old_exec 9.06 -1.6 7.47 ± 2% perf-profile.calltrace.cycles-pp.unlink_file_vma.free_pgtables.exit_mmap.mmput.do_exit 9.36 ± 2% -1.6 7.77 ± 2% perf-profile.calltrace.cycles-pp.free_pgtables.exit_mmap.mmput.flush_old_exec.load_elf_binary 9.71 -1.5 8.21 ± 2% perf-profile.calltrace.cycles-pp.free_pgtables.exit_mmap.mmput.do_exit.do_group_exit 6.71 ± 2% -1.5 5.26 ± 3% perf-profile.calltrace.cycles-pp.call_rwsem_down_write_failed.down_write.__vma_adjust.__split_vma.mprotect_fixup 6.77 ± 2% -1.4 5.32 ± 3% perf-profile.calltrace.cycles-pp.down_write.__vma_adjust.__split_vma.mprotect_fixup.do_mprotect_pkey 9.54 -1.3 8.23 ± 3% perf-profile.calltrace.cycles-pp.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 10.17 -1.3 8.86 ± 4% perf-profile.calltrace.cycles-pp.secondary_startup_64 9.31 -1.3 8.01 ± 4% perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary 10.04 -1.3 8.74 ± 3% perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 7.63 ± 2% -1.3 6.33 ± 2% perf-profile.calltrace.cycles-pp.__vma_adjust.__split_vma.mprotect_fixup.do_mprotect_pkey.__x64_sys_mprotect 10.04 -1.3 8.75 ± 3% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64 10.04 -1.3 8.75 ± 3% perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64 7.34 -1.3 6.05 ± 2% perf-profile.calltrace.cycles-pp.do_munmap.mmap_region.do_mmap.vm_mmap_pgoff.ksys_mmap_pgoff 7.71 ± 2% -1.3 6.43 ± 2% perf-profile.calltrace.cycles-pp.__split_vma.mprotect_fixup.do_mprotect_pkey.__x64_sys_mprotect.do_syscall_64 10.84 -1.2 9.62 perf-profile.calltrace.cycles-pp.copy_process._do_fork.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_fork 8.01 ± 2% -1.2 6.80 ± 2% perf-profile.calltrace.cycles-pp.mprotect_fixup.do_mprotect_pkey.__x64_sys_mprotect.do_syscall_64.entry_SYSCALL_64_after_hwframe 8.09 ± 2% -1.2 6.90 ± 2% perf-profile.calltrace.cycles-pp.do_mprotect_pkey.__x64_sys_mprotect.do_syscall_64.entry_SYSCALL_64_after_hwframe 8.10 ± 2% -1.2 6.90 ± 2% perf-profile.calltrace.cycles-pp.__x64_sys_mprotect.do_syscall_64.entry_SYSCALL_64_after_hwframe 11.17 -1.2 9.99 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__libc_fork 11.16 -1.2 9.99 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_fork 11.15 -1.2 9.98 perf-profile.calltrace.cycles-pp._do_fork.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_fork 11.80 -1.1 10.73 perf-profile.calltrace.cycles-pp.__libc_fork 4.28 -1.1 3.21 ± 3% perf-profile.calltrace.cycles-pp.osq_lock.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.vma_link 4.44 ± 2% -1.0 3.47 ± 2% perf-profile.calltrace.cycles-pp.call_rwsem_down_write_failed.down_write.unlink_file_vma.free_pgtables.unmap_region 4.45 -1.0 3.49 ± 2% perf-profile.calltrace.cycles-pp.down_write.unlink_file_vma.free_pgtables.unmap_region.do_munmap 11.18 -1.0 10.22 perf-profile.calltrace.cycles-pp.exit_mmap.mmput.flush_old_exec.load_elf_binary.search_binary_handler 4.48 -1.0 3.52 ± 2% perf-profile.calltrace.cycles-pp.unlink_file_vma.free_pgtables.unmap_region.do_munmap.mmap_region 11.19 -1.0 10.23 perf-profile.calltrace.cycles-pp.mmput.flush_old_exec.load_elf_binary.search_binary_handler.__do_execve_file 4.43 -0.9 3.48 ± 8% perf-profile.calltrace.cycles-pp.call_rwsem_down_write_failed.down_write.vma_link.mmap_region.do_mmap 4.43 -0.9 3.48 ± 8% perf-profile.calltrace.cycles-pp.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.vma_link.mmap_region 4.67 -0.9 3.73 ± 2% perf-profile.calltrace.cycles-pp.free_pgtables.unmap_region.do_munmap.mmap_region.do_mmap 4.45 -0.9 3.51 ± 9% perf-profile.calltrace.cycles-pp.down_write.vma_link.mmap_region.do_mmap.vm_mmap_pgoff 11.30 -0.9 10.38 perf-profile.calltrace.cycles-pp.flush_old_exec.load_elf_binary.search_binary_handler.__do_execve_file.__x64_sys_execve 4.85 -0.9 3.98 ± 2% perf-profile.calltrace.cycles-pp.unmap_region.do_munmap.mmap_region.do_mmap.vm_mmap_pgoff 5.40 -0.8 4.57 ± 2% perf-profile.calltrace.cycles-pp.vma_link.mmap_region.do_mmap.vm_mmap_pgoff.ksys_mmap_pgoff 2.25 -0.5 1.78 ± 3% perf-profile.calltrace.cycles-pp.down_write.__vma_adjust.__split_vma.do_munmap.mmap_region 2.25 -0.5 1.78 ± 3% perf-profile.calltrace.cycles-pp.call_rwsem_down_write_failed.down_write.__vma_adjust.__split_vma.do_munmap 2.42 -0.4 1.98 ± 2% perf-profile.calltrace.cycles-pp.__vma_adjust.__split_vma.do_munmap.mmap_region.do_mmap 2.43 -0.4 1.99 ± 2% perf-profile.calltrace.cycles-pp.__split_vma.do_munmap.mmap_region.do_mmap.vm_mmap_pgoff 13.17 -0.3 12.82 perf-profile.calltrace.cycles-pp.exit_mmap.mmput.do_exit.do_group_exit.__x64_sys_exit_group 13.17 -0.3 12.83 perf-profile.calltrace.cycles-pp.mmput.do_exit.do_group_exit.__x64_sys_exit_group.do_syscall_64 2.69 ± 2% -0.1 2.56 perf-profile.calltrace.cycles-pp.filemap_map_pages.__handle_mm_fault.handle_mm_fault.__do_page_fault.do_page_fault 0.56 +0.2 0.72 ± 2% perf-profile.calltrace.cycles-pp._IO_default_xsputn 0.63 +0.2 0.78 ± 3% perf-profile.calltrace.cycles-pp.copy_strings.__do_execve_file.__x64_sys_execve.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.75 +0.2 0.92 ± 2% perf-profile.calltrace.cycles-pp.wp_page_copy.do_wp_page.__handle_mm_fault.handle_mm_fault.__do_page_fault 0.82 +0.2 1.01 ± 2% perf-profile.calltrace.cycles-pp.do_wp_page.__handle_mm_fault.handle_mm_fault.__do_page_fault.do_page_fault 0.94 ± 2% +0.2 1.16 perf-profile.calltrace.cycles-pp._dl_addr 0.64 ± 2% +0.2 0.87 ± 4% perf-profile.calltrace.cycles-pp.ret_from_fork 0.63 ± 2% +0.2 0.87 ± 4% perf-profile.calltrace.cycles-pp.kthread.ret_from_fork 0.67 ± 2% +0.2 0.91 ± 4% perf-profile.calltrace.cycles-pp.page_remove_rmap.unmap_page_range.unmap_vmas.exit_mmap.mmput 0.87 +0.2 1.12 ± 2% perf-profile.calltrace.cycles-pp.path_openat.do_filp_open.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.88 +0.2 1.13 perf-profile.calltrace.cycles-pp.do_filp_open.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe.setlocale 0.70 ± 2% +0.3 0.96 ± 3% perf-profile.calltrace.cycles-pp.arch_tlb_finish_mmu.tlb_finish_mmu.exit_mmap.mmput.flush_old_exec 1.10 +0.3 1.37 ± 2% perf-profile.calltrace.cycles-pp.__strcoll_l 0.70 ± 2% +0.3 0.97 ± 3% perf-profile.calltrace.cycles-pp.tlb_finish_mmu.exit_mmap.mmput.flush_old_exec.load_elf_binary 1.04 +0.3 1.32 ± 2% perf-profile.calltrace.cycles-pp.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe.setlocale 0.89 +0.3 1.17 ± 3% perf-profile.calltrace.cycles-pp.unmap_page_range.unmap_vmas.exit_mmap.mmput.flush_old_exec 0.95 +0.3 1.25 ± 3% perf-profile.calltrace.cycles-pp.unmap_vmas.exit_mmap.mmput.flush_old_exec.load_elf_binary 1.15 +0.3 1.46 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.setlocale 4.73 +0.3 5.04 perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 1.15 +0.3 1.46 ± 2% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.setlocale 1.07 +0.3 1.39 perf-profile.calltrace.cycles-pp.vm_mmap_pgoff.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe.mmap64 1.09 ± 2% +0.3 1.42 perf-profile.calltrace.cycles-pp.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe.mmap64 1.11 ± 2% +0.3 1.45 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.mmap64 1.11 +0.3 1.44 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.mmap64 0.26 ±100% +0.3 0.60 perf-profile.calltrace.cycles-pp.copy_page_range.copy_process._do_fork.do_syscall_64.entry_SYSCALL_64_after_hwframe 4.85 +0.3 5.19 perf-profile.calltrace.cycles-pp.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.39 ± 57% +0.4 0.74 ± 3% perf-profile.calltrace.cycles-pp.wait4 1.20 +0.4 1.56 perf-profile.calltrace.cycles-pp.mmap64 13.89 +0.4 14.25 perf-profile.calltrace.cycles-pp.load_elf_binary.search_binary_handler.__do_execve_file.__x64_sys_execve.do_syscall_64 13.91 +0.4 14.28 perf-profile.calltrace.cycles-pp.search_binary_handler.__do_execve_file.__x64_sys_execve.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.78 ± 2% +0.4 2.19 perf-profile.calltrace.cycles-pp.vfprintf.__vsnprintf_chk 0.55 ± 3% +0.4 0.99 ± 3% perf-profile.calltrace.cycles-pp.mmap_region.do_mmap.vm_mmap_pgoff.elf_map.load_elf_binary 0.60 ± 4% +0.5 1.06 ± 3% perf-profile.calltrace.cycles-pp.do_mmap.vm_mmap_pgoff.elf_map.load_elf_binary.search_binary_handler 0.66 ± 3% +0.5 1.12 ± 2% perf-profile.calltrace.cycles-pp.vm_mmap_pgoff.elf_map.load_elf_binary.search_binary_handler.__do_execve_file 5.43 +0.5 5.91 perf-profile.calltrace.cycles-pp.__do_page_fault.do_page_fault.page_fault 5.45 +0.5 5.92 perf-profile.calltrace.cycles-pp.do_page_fault.page_fault 0.00 +0.5 0.51 perf-profile.calltrace.cycles-pp.page_fault.setlocale 0.00 +0.5 0.51 ± 3% perf-profile.calltrace.cycles-pp.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 5.58 +0.5 6.09 perf-profile.calltrace.cycles-pp.page_fault 0.00 +0.5 0.52 ± 4% perf-profile.calltrace.cycles-pp.smpboot_thread_fn.kthread.ret_from_fork 0.00 +0.5 0.53 ± 2% perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 1.37 ± 2% +0.5 1.90 ± 5% perf-profile.calltrace.cycles-pp.arch_tlb_finish_mmu.tlb_finish_mmu.exit_mmap.mmput.do_exit 1.38 ± 2% +0.5 1.90 ± 5% perf-profile.calltrace.cycles-pp.tlb_finish_mmu.exit_mmap.mmput.do_exit.do_group_exit 0.00 +0.5 0.53 ± 3% perf-profile.calltrace.cycles-pp.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 0.00 +0.5 0.54 ± 2% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 1.73 ± 2% +0.5 2.26 ± 3% perf-profile.calltrace.cycles-pp.unmap_page_range.unmap_vmas.exit_mmap.mmput.do_exit 0.00 +0.5 0.54 ± 3% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.write 0.00 +0.5 0.54 ± 3% perf-profile.calltrace.cycles-pp.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 2.69 +0.5 3.24 perf-profile.calltrace.cycles-pp.__vsnprintf_chk 1.80 ± 2% +0.6 2.35 ± 3% perf-profile.calltrace.cycles-pp.unmap_vmas.exit_mmap.mmput.do_exit.do_group_exit 0.00 +0.6 0.56 ± 2% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 0.00 +0.6 0.56 ± 3% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.read 2.46 +0.6 3.03 ± 2% perf-profile.calltrace.cycles-pp.setlocale 0.00 +0.6 0.58 ± 3% perf-profile.calltrace.cycles-pp.write 0.00 +0.6 0.58 ± 2% perf-profile.calltrace.cycles-pp.do_faccessat.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.12 ±173% +0.6 0.71 ± 4% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.wait4 0.12 ±173% +0.6 0.71 ± 4% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.wait4 0.00 +0.6 0.61 ± 3% perf-profile.calltrace.cycles-pp.read 0.00 +0.6 0.61 ± 5% perf-profile.calltrace.cycles-pp.do_wait.kernel_wait4.__do_sys_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.6 0.62 ± 5% perf-profile.calltrace.cycles-pp.kernel_wait4.__do_sys_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe.wait4 0.00 +0.6 0.63 ± 4% perf-profile.calltrace.cycles-pp.__do_sys_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe.wait4 1.63 ± 2% +0.7 2.31 ± 5% perf-profile.calltrace.cycles-pp.release_pages.tlb_flush_mmu_free.arch_tlb_finish_mmu.tlb_finish_mmu.exit_mmap 0.00 +0.7 0.74 ± 3% perf-profile.calltrace.cycles-pp.vma_link.mmap_region.do_mmap.vm_mmap_pgoff.elf_map 0.12 ±173% +0.8 0.91 ± 3% perf-profile.calltrace.cycles-pp.do_munmap.vm_munmap.elf_map.load_elf_binary.search_binary_handler 2.05 ± 2% +0.8 2.84 ± 4% perf-profile.calltrace.cycles-pp.tlb_flush_mmu_free.arch_tlb_finish_mmu.tlb_finish_mmu.exit_mmap.mmput 0.13 ±173% +0.8 0.92 ± 4% perf-profile.calltrace.cycles-pp.vm_munmap.elf_map.load_elf_binary.search_binary_handler.__do_execve_file 15.67 +0.8 16.48 perf-profile.calltrace.cycles-pp.__do_execve_file.__x64_sys_execve.do_syscall_64.entry_SYSCALL_64_after_hwframe.execve 15.68 +0.8 16.50 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.execve 15.68 +0.8 16.50 perf-profile.calltrace.cycles-pp.__x64_sys_execve.do_syscall_64.entry_SYSCALL_64_after_hwframe.execve 15.68 +0.8 16.50 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.execve 15.71 +0.8 16.53 perf-profile.calltrace.cycles-pp.execve 1.16 ± 3% +0.9 2.05 ± 3% perf-profile.calltrace.cycles-pp.elf_map.load_elf_binary.search_binary_handler.__do_execve_file.__x64_sys_execve 42.48 -8.6 33.85 ± 3% perf-profile.children.cycles-pp.osq_lock 44.24 -8.5 35.76 ± 2% perf-profile.children.cycles-pp.rwsem_down_write_failed 44.25 -8.5 35.78 ± 2% perf-profile.children.cycles-pp.call_rwsem_down_write_failed 44.77 -8.4 36.37 ± 2% perf-profile.children.cycles-pp.down_write 22.58 -4.1 18.50 ± 2% perf-profile.children.cycles-pp.unlink_file_vma 24.10 -3.9 20.25 ± 2% perf-profile.children.cycles-pp.free_pgtables 13.81 -1.8 11.97 perf-profile.children.cycles-pp.ksys_mmap_pgoff 69.44 -1.8 67.68 perf-profile.children.cycles-pp.do_syscall_64 69.50 -1.8 67.74 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 10.31 ± 2% -1.5 8.80 ± 2% perf-profile.children.cycles-pp.__vma_adjust 13.93 -1.5 12.43 perf-profile.children.cycles-pp.mmap_region 10.40 -1.5 8.90 ± 2% perf-profile.children.cycles-pp.__split_vma 14.23 -1.4 12.80 perf-profile.children.cycles-pp.do_mmap 14.44 -1.4 13.06 perf-profile.children.cycles-pp.vm_mmap_pgoff 9.67 -1.3 8.35 ± 4% perf-profile.children.cycles-pp.cpuidle_enter_state 24.58 -1.3 23.26 perf-profile.children.cycles-pp.mmput 24.55 -1.3 23.24 perf-profile.children.cycles-pp.exit_mmap 9.44 -1.3 8.12 ± 4% perf-profile.children.cycles-pp.intel_idle 10.17 -1.3 8.86 ± 4% perf-profile.children.cycles-pp.secondary_startup_64 10.17 -1.3 8.86 ± 4% perf-profile.children.cycles-pp.cpu_startup_entry 10.17 -1.3 8.86 ± 4% perf-profile.children.cycles-pp.do_idle 10.04 -1.3 8.75 ± 3% perf-profile.children.cycles-pp.start_secondary 11.07 -1.2 9.82 perf-profile.children.cycles-pp.copy_process 8.02 ± 2% -1.2 6.80 ± 2% perf-profile.children.cycles-pp.mprotect_fixup 11.38 -1.2 10.18 perf-profile.children.cycles-pp._do_fork 8.10 ± 2% -1.2 6.90 ± 2% perf-profile.children.cycles-pp.do_mprotect_pkey 8.10 ± 2% -1.2 6.90 ± 2% perf-profile.children.cycles-pp.__x64_sys_mprotect 11.84 -1.1 10.77 perf-profile.children.cycles-pp.__libc_fork 11.51 -0.9 10.57 perf-profile.children.cycles-pp.flush_old_exec 8.20 -0.8 7.44 perf-profile.children.cycles-pp.do_munmap 5.36 -0.6 4.79 perf-profile.children.cycles-pp.unmap_region 5.70 ± 2% -0.5 5.21 perf-profile.children.cycles-pp.filemap_map_pages 5.81 -0.4 5.39 perf-profile.children.cycles-pp.vma_link 0.29 ± 3% -0.1 0.15 perf-profile.children.cycles-pp.radix_tree_next_chunk 0.39 ± 3% -0.0 0.36 perf-profile.children.cycles-pp.time 0.16 ± 4% -0.0 0.13 perf-profile.children.cycles-pp.find_busiest_group 0.30 -0.0 0.29 perf-profile.children.cycles-pp.load_balance 0.23 -0.0 0.21 ± 2% perf-profile.children.cycles-pp.__strcasecmp 0.17 -0.0 0.15 ± 3% perf-profile.children.cycles-pp.fopen 0.05 +0.0 0.06 perf-profile.children.cycles-pp.__put_task_struct 0.05 +0.0 0.06 perf-profile.children.cycles-pp.vm_brk_flags 0.05 +0.0 0.06 perf-profile.children.cycles-pp.__perf_event__output_id_sample 0.05 +0.0 0.06 perf-profile.children.cycles-pp.security_mmap_addr 0.05 +0.0 0.06 perf-profile.children.cycles-pp.selinux_file_open 0.06 +0.0 0.07 perf-profile.children.cycles-pp.__switch_to 0.07 ± 5% +0.0 0.09 ± 5% perf-profile.children.cycles-pp.__x64_sys_pipe 0.07 ± 5% +0.0 0.09 ± 5% perf-profile.children.cycles-pp.do_pipe2 0.07 ± 5% +0.0 0.09 ± 5% perf-profile.children.cycles-pp.unmap_single_vma 0.07 +0.0 0.08 ± 5% perf-profile.children.cycles-pp.__errno_location 0.05 +0.0 0.06 ± 6% perf-profile.children.cycles-pp.mem_cgroup_throttle_swaprate 0.05 ± 8% +0.0 0.07 ± 7% perf-profile.children.cycles-pp.perf_event_task_output 0.05 ± 8% +0.0 0.07 ± 7% perf-profile.children.cycles-pp.load_elf_phdrs 0.17 ± 2% +0.0 0.18 ± 2% perf-profile.children.cycles-pp.sched_ttwu_pending 0.06 ± 6% +0.0 0.08 ± 6% perf-profile.children.cycles-pp.cpumask_next 0.06 +0.0 0.07 ± 5% perf-profile.children.cycles-pp.kfree 0.08 ± 6% +0.0 0.09 perf-profile.children.cycles-pp.do_signal 0.08 ± 6% +0.0 0.09 perf-profile.children.cycles-pp.memcpy 0.08 ± 5% +0.0 0.09 ± 4% perf-profile.children.cycles-pp.__pipe 0.08 +0.0 0.10 ± 5% perf-profile.children.cycles-pp.vfs_getattr 0.08 ± 5% +0.0 0.09 ± 4% perf-profile.children.cycles-pp.security_inode_getattr 0.08 ± 5% +0.0 0.09 ± 4% perf-profile.children.cycles-pp.avc_has_perm 0.07 ± 6% +0.0 0.08 ± 5% perf-profile.children.cycles-pp.fsnotify 0.07 +0.0 0.09 ± 5% perf-profile.children.cycles-pp.__tsearch 0.07 ± 7% +0.0 0.08 perf-profile.children.cycles-pp.memchr 0.05 ± 8% +0.0 0.07 ± 6% perf-profile.children.cycles-pp.file_has_perm 0.05 ± 8% +0.0 0.07 ± 6% perf-profile.children.cycles-pp.__alloc_fd 0.05 +0.0 0.07 ± 7% perf-profile.children.cycles-pp.free_unref_page_commit 0.05 +0.0 0.07 ± 7% perf-profile.children.cycles-pp.up_read 0.29 +0.0 0.30 ± 2% perf-profile.children.cycles-pp.save_stack_trace_tsk 0.13 ± 3% +0.0 0.14 ± 3% perf-profile.children.cycles-pp.pipe_wait 0.06 +0.0 0.08 ± 6% perf-profile.children.cycles-pp.__put_anon_vma 0.06 ± 11% +0.0 0.08 ± 6% perf-profile.children.cycles-pp.wake_up_page_bit 0.05 ± 9% +0.0 0.07 perf-profile.children.cycles-pp.dup_fd 0.19 ± 2% +0.0 0.21 perf-profile.children.cycles-pp.dequeue_entity 0.10 ± 5% +0.0 0.11 ± 3% perf-profile.children.cycles-pp.move_queued_task 0.10 ± 7% +0.0 0.12 ± 3% perf-profile.children.cycles-pp.__list_add_valid 0.08 ± 6% +0.0 0.09 ± 4% perf-profile.children.cycles-pp.find_next_bit 0.07 ± 5% +0.0 0.09 ± 7% perf-profile.children.cycles-pp.arch_dup_task_struct 0.11 +0.0 0.13 ± 3% perf-profile.children.cycles-pp.find_get_entry 0.07 ± 10% +0.0 0.09 ± 4% perf-profile.children.cycles-pp.cp_new_stat 0.07 ± 7% +0.0 0.08 ± 5% perf-profile.children.cycles-pp.load_new_mm_cr3 0.07 ± 7% +0.0 0.08 ± 5% perf-profile.children.cycles-pp.set_next_entity 0.07 ± 6% +0.0 0.09 ± 5% perf-profile.children.cycles-pp.__install_special_mapping 0.06 ± 6% +0.0 0.08 perf-profile.children.cycles-pp._IO_setb 0.07 ± 6% +0.0 0.09 ± 5% perf-profile.children.cycles-pp.trailing_symlink 0.06 ± 6% +0.0 0.08 perf-profile.children.cycles-pp.setup_new_exec 0.06 ± 6% +0.0 0.08 perf-profile.children.cycles-pp.perf_event_task 0.05 +0.0 0.07 ± 6% perf-profile.children.cycles-pp.__legitimize_mnt 0.05 ± 8% +0.0 0.07 perf-profile.children.cycles-pp.vma_gap_callbacks_rotate 0.05 +0.0 0.07 ± 6% perf-profile.children.cycles-pp.security_file_free 0.05 ± 8% +0.0 0.07 perf-profile.children.cycles-pp.down_write_killable 0.08 ± 5% +0.0 0.10 ± 4% perf-profile.children.cycles-pp.available_idle_cpu 0.08 ± 5% +0.0 0.10 ± 4% perf-profile.children.cycles-pp._vm_normal_page 0.08 ± 5% +0.0 0.10 perf-profile.children.cycles-pp.expand_downwards 0.06 ± 7% +0.0 0.08 ± 6% perf-profile.children.cycles-pp._copy_to_user 0.06 +0.0 0.08 ± 5% perf-profile.children.cycles-pp.__unlock_page_memcg 0.06 ± 7% +0.0 0.08 ± 6% perf-profile.children.cycles-pp.security_file_alloc 0.17 ± 2% +0.0 0.19 ± 4% perf-profile.children.cycles-pp.osq_unlock 0.10 ± 5% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.finish_fault 0.09 ± 4% +0.0 0.11 ± 3% perf-profile.children.cycles-pp.may_open 0.09 ± 4% +0.0 0.11 ± 3% perf-profile.children.cycles-pp.perf_output_copy 0.10 ± 4% +0.0 0.12 ± 3% perf-profile.children.cycles-pp.selinux_mmap_file 0.07 ± 5% +0.0 0.09 ± 4% perf-profile.children.cycles-pp.try_charge 0.07 ± 5% +0.0 0.09 ± 4% perf-profile.children.cycles-pp.___slab_alloc 0.08 ± 6% +0.0 0.10 ± 5% perf-profile.children.cycles-pp.__pthread_once_slow 0.07 +0.0 0.09 perf-profile.children.cycles-pp.move_page_tables 0.07 +0.0 0.09 perf-profile.children.cycles-pp.touch_atime 0.06 ± 6% +0.0 0.08 ± 5% perf-profile.children.cycles-pp.queue_work_on 0.09 ± 7% +0.0 0.11 perf-profile.children.cycles-pp.filp_close 0.08 ± 8% +0.0 0.10 perf-profile.children.cycles-pp.selinux_vm_enough_memory 0.09 ± 4% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.sync_regs 0.08 +0.0 0.10 perf-profile.children.cycles-pp.__inode_security_revalidate 0.07 ± 6% +0.0 0.09 ± 4% perf-profile.children.cycles-pp.prepend_name 0.06 ± 6% +0.0 0.08 ± 5% perf-profile.children.cycles-pp.complete_walk 0.06 +0.0 0.08 ± 8% perf-profile.children.cycles-pp.unlock_page_memcg 0.06 ± 11% +0.0 0.08 perf-profile.children.cycles-pp.cred_has_capability 0.06 +0.0 0.08 perf-profile.children.cycles-pp.security_file_open 0.06 +0.0 0.08 perf-profile.children.cycles-pp.__queue_work 0.05 ± 8% +0.0 0.07 ± 11% perf-profile.children.cycles-pp.copyin 0.06 ± 9% +0.0 0.08 ± 6% perf-profile.children.cycles-pp.entry_SYSCALL_64_stage2 0.06 ± 9% +0.0 0.08 ± 6% perf-profile.children.cycles-pp.simple_write_begin 0.06 ± 7% +0.0 0.08 ± 5% perf-profile.children.cycles-pp.security_file_permission 0.14 ± 5% +0.0 0.16 ± 2% perf-profile.children.cycles-pp.switch_mm_irqs_off 0.13 +0.0 0.15 ± 2% perf-profile.children.cycles-pp.__anon_vma_prepare 0.10 ± 7% +0.0 0.12 ± 3% perf-profile.children.cycles-pp.migration_cpu_stop 0.09 ± 7% +0.0 0.11 ± 3% perf-profile.children.cycles-pp._IO_file_close 0.09 +0.0 0.11 ± 3% perf-profile.children.cycles-pp.__call_rcu 0.07 +0.0 0.09 ± 4% perf-profile.children.cycles-pp.kmem_cache_alloc_trace 0.11 ± 4% +0.0 0.13 perf-profile.children.cycles-pp.do_brk_flags 0.10 ± 8% +0.0 0.12 ± 4% perf-profile.children.cycles-pp.prepare_creds 0.09 +0.0 0.11 ± 3% perf-profile.children.cycles-pp.put_task_stack 0.08 ± 5% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.__slab_alloc 0.09 ± 5% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.__x64_sys_brk 0.08 ± 5% +0.0 0.10 perf-profile.children.cycles-pp.map_vdso 0.11 ± 7% +0.0 0.14 ± 3% perf-profile.children.cycles-pp.get_zeroed_page 0.08 ± 5% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.anon_vma_interval_tree_remove 0.12 ± 3% +0.0 0.15 ± 2% perf-profile.children.cycles-pp.__libc_sigaction 0.11 ± 4% +0.0 0.13 ± 5% perf-profile.children.cycles-pp.cpu_stopper_thread 0.10 ± 5% +0.0 0.12 ± 5% perf-profile.children.cycles-pp.prepare_binprm 0.09 +0.0 0.11 ± 4% perf-profile.children.cycles-pp.__d_alloc 0.09 ± 4% +0.0 0.11 ± 3% perf-profile.children.cycles-pp.simple_lookup 0.08 ± 5% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.vm_area_alloc 0.04 ± 57% +0.0 0.06 ± 6% perf-profile.children.cycles-pp.alloc_pid 0.11 ± 4% +0.0 0.13 ± 3% perf-profile.children.cycles-pp.brk 0.08 ± 5% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.memset_erms 0.11 ± 3% +0.0 0.14 ± 6% perf-profile.children.cycles-pp.__get_user_8 0.09 ± 5% +0.0 0.11 ± 3% perf-profile.children.cycles-pp.evict 0.15 ± 3% +0.0 0.17 ± 2% perf-profile.children.cycles-pp.avc_has_perm_noaudit 0.13 ± 3% +0.0 0.15 ± 3% perf-profile.children.cycles-pp.sched_move_task 0.11 ± 7% +0.0 0.14 ± 3% perf-profile.children.cycles-pp.__dentry_kill 0.10 ± 4% +0.0 0.13 ± 5% perf-profile.children.cycles-pp.unmapped_area_topdown 0.10 ± 4% +0.0 0.12 ± 4% perf-profile.children.cycles-pp.__snprintf_chk 0.09 ± 4% +0.0 0.11 ± 7% perf-profile.children.cycles-pp.select_idle_sibling 0.08 ± 5% +0.0 0.11 ± 8% perf-profile.children.cycles-pp.lockref_get_not_dead 0.07 +0.0 0.10 ± 4% perf-profile.children.cycles-pp.d_add 0.04 ± 57% +0.0 0.07 ± 7% perf-profile.children.cycles-pp.do_huge_pmd_anonymous_page 0.11 +0.0 0.14 ± 3% perf-profile.children.cycles-pp.fput 0.11 ± 6% +0.0 0.14 ± 3% perf-profile.children.cycles-pp._exit 0.12 ± 6% +0.0 0.15 ± 5% perf-profile.children.cycles-pp.security_vm_enough_memory_mm 0.12 ± 3% +0.0 0.15 ± 2% perf-profile.children.cycles-pp.free_pgd_range 0.11 ± 4% +0.0 0.14 ± 3% perf-profile.children.cycles-pp.vm_area_dup 0.10 ± 7% +0.0 0.13 perf-profile.children.cycles-pp.vma_interval_tree_augment_rotate 0.10 ± 5% +0.0 0.12 ± 4% perf-profile.children.cycles-pp.rcu_all_qs 0.09 ± 4% +0.0 0.12 ± 3% perf-profile.children.cycles-pp.munmap 0.08 ± 6% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.__mmdrop 0.07 ± 6% +0.0 0.10 ± 4% perf-profile.children.cycles-pp.truncate_inode_pages_range 0.04 ± 57% +0.0 0.07 ± 6% perf-profile.children.cycles-pp.grab_cache_page_write_begin 0.12 ± 3% +0.0 0.15 ± 2% perf-profile.children.cycles-pp.__lru_cache_add 0.11 ± 4% +0.0 0.15 ± 3% perf-profile.children.cycles-pp.prepend_path 0.14 ± 3% +0.0 0.17 ± 6% perf-profile.children.cycles-pp.security_mmap_file 0.14 ± 3% +0.0 0.17 ± 7% perf-profile.children.cycles-pp.mem_cgroup_try_charge 0.12 ± 3% +0.0 0.15 ± 9% perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore 0.13 +0.0 0.16 ± 2% perf-profile.children.cycles-pp.lockref_put_or_lock 0.14 ± 6% +0.0 0.17 ± 4% perf-profile.children.cycles-pp.kernel_read 0.12 ± 3% +0.0 0.15 ± 3% perf-profile.children.cycles-pp.__put_user_4 0.09 +0.0 0.12 ± 8% perf-profile.children.cycles-pp.file_free_rcu 0.11 ± 4% +0.0 0.15 ± 5% perf-profile.children.cycles-pp.__x64_sys_close 0.20 ± 3% +0.0 0.23 ± 2% perf-profile.children.cycles-pp.update_load_avg 0.16 +0.0 0.20 ± 5% perf-profile.children.cycles-pp.vfs_statx_fd 0.17 ± 3% +0.0 0.20 ± 3% perf-profile.children.cycles-pp.d_path 0.15 ± 3% +0.0 0.19 ± 3% perf-profile.children.cycles-pp.stop_one_cpu 0.16 +0.0 0.20 ± 2% perf-profile.children.cycles-pp.anon_vma_clone 0.16 ± 2% +0.0 0.20 ± 2% perf-profile.children.cycles-pp.vma_compute_subtree_gap 0.16 ± 2% +0.0 0.20 ± 2% perf-profile.children.cycles-pp.getenv 0.15 ± 2% +0.0 0.18 ± 2% perf-profile.children.cycles-pp._init 0.14 ± 5% +0.0 0.18 ± 2% perf-profile.children.cycles-pp.__pud_alloc 0.12 ± 4% +0.0 0.16 ± 4% perf-profile.children.cycles-pp.__getrlimit 0.09 +0.0 0.12 ± 4% perf-profile.children.cycles-pp.wake_q_add 0.30 ± 2% +0.0 0.34 ± 3% perf-profile.children.cycles-pp.strchrnul 0.18 ± 2% +0.0 0.21 ± 3% perf-profile.children.cycles-pp.open_exec 0.14 +0.0 0.18 ± 2% perf-profile.children.cycles-pp.shift_arg_pages 0.14 ± 5% +0.0 0.18 ± 2% perf-profile.children.cycles-pp.preempt_schedule_common 0.19 ± 4% +0.0 0.23 perf-profile.children.cycles-pp.getname_flags 0.17 ± 4% +0.0 0.21 ± 2% perf-profile.children.cycles-pp.arch_get_unmapped_area_topdown 0.14 ± 3% +0.0 0.18 ± 5% perf-profile.children.cycles-pp.__might_fault 0.15 ± 2% +0.0 0.18 ± 2% perf-profile.children.cycles-pp.perf_event_mmap_output 0.13 ± 6% +0.0 0.17 ± 5% perf-profile.children.cycles-pp.dentry_kill 0.13 ± 5% +0.0 0.17 ± 4% perf-profile.children.cycles-pp.copy_user_generic_unrolled 0.13 ± 3% +0.0 0.17 ± 3% perf-profile.children.cycles-pp.do_unlinkat 0.11 +0.0 0.15 ± 2% perf-profile.children.cycles-pp.inode_permission 0.14 ± 5% +0.0 0.18 perf-profile.children.cycles-pp.free_pcppages_bulk 0.08 +0.0 0.12 ± 11% perf-profile.children.cycles-pp.rcu_cblist_dequeue 0.23 ± 2% +0.0 0.27 ± 4% perf-profile.children.cycles-pp.ptep_clear_flush 0.18 ± 4% +0.0 0.22 perf-profile.children.cycles-pp.change_protection_range 0.16 ± 2% +0.0 0.20 ± 4% perf-profile.children.cycles-pp.memcpy_erms 0.15 ± 3% +0.0 0.20 ± 4% perf-profile.children.cycles-pp.pagecache_get_page 0.14 ± 3% +0.0 0.18 ± 4% perf-profile.children.cycles-pp.legitimize_path 0.39 ± 2% +0.0 0.43 ± 3% perf-profile.children.cycles-pp.malloc 0.54 +0.0 0.58 perf-profile.children.cycles-pp.ttwu_do_activate 0.25 ± 3% +0.0 0.29 perf-profile.children.cycles-pp.dequeue_task_fair 0.19 ± 2% +0.0 0.23 ± 3% perf-profile.children.cycles-pp._copy_from_user 0.18 ± 2% +0.0 0.22 ± 3% perf-profile.children.cycles-pp.vmacache_find 0.18 ± 2% +0.0 0.22 perf-profile.children.cycles-pp.open64 0.14 ± 3% +0.0 0.18 perf-profile.children.cycles-pp.lock_page_memcg 0.01 ±173% +0.0 0.05 ± 9% perf-profile.children.cycles-pp.__follow_mount_rcu 0.21 ± 6% +0.0 0.26 ± 3% perf-profile.children.cycles-pp._IO_file_xsputn 0.17 ± 3% +0.0 0.21 ± 3% perf-profile.children.cycles-pp.signal_wake_up_state 0.14 ± 3% +0.0 0.18 ± 3% perf-profile.children.cycles-pp.count 0.13 ± 3% +0.0 0.18 ± 2% perf-profile.children.cycles-pp.unlinkat 0.11 ± 7% +0.0 0.15 ± 9% perf-profile.children.cycles-pp.__get_vm_area_node 0.09 ± 4% +0.0 0.14 ± 13% perf-profile.children.cycles-pp.alloc_vmap_area 0.20 ± 2% +0.0 0.24 ± 3% perf-profile.children.cycles-pp.__vma_link_rb 0.17 ± 2% +0.0 0.21 ± 3% perf-profile.children.cycles-pp.schedule_tail 0.14 ± 3% +0.0 0.19 ± 4% perf-profile.children.cycles-pp.__rb_erase_color 0.01 ±173% +0.0 0.06 ± 7% perf-profile.children.cycles-pp.insert_vm_struct 0.01 ±173% +0.0 0.06 ± 7% perf-profile.children.cycles-pp.put_prev_entity 0.19 ± 2% +0.0 0.24 ± 2% perf-profile.children.cycles-pp.copy_strings_kernel 0.19 ± 2% +0.0 0.24 ± 5% perf-profile.children.cycles-pp.setup_arg_pages 0.17 ± 4% +0.0 0.22 perf-profile.children.cycles-pp.__pmd_alloc 0.15 ± 3% +0.0 0.19 ± 5% perf-profile.children.cycles-pp.unlazy_walk 0.14 ± 5% +0.0 0.19 ± 4% perf-profile.children.cycles-pp.__get_free_pages 0.01 ±173% +0.0 0.06 perf-profile.children.cycles-pp.__free_pages_ok 0.15 +0.0 0.20 ± 4% perf-profile.children.cycles-pp.mark_page_accessed 0.15 ± 2% +0.0 0.20 ± 3% perf-profile.children.cycles-pp.d_alloc 0.57 +0.0 0.61 perf-profile.children.cycles-pp.enqueue_entity 0.23 +0.0 0.28 ± 4% perf-profile.children.cycles-pp.__do_sys_newfstat 0.16 ± 5% +0.0 0.21 ± 6% perf-profile.children.cycles-pp.__generic_file_write_iter 0.15 ± 7% +0.0 0.20 ± 5% perf-profile.children.cycles-pp.generic_perform_write 0.00 +0.1 0.05 perf-profile.children.cycles-pp.vma_merge 0.00 +0.1 0.05 perf-profile.children.cycles-pp.free_one_page 0.00 +0.1 0.05 perf-profile.children.cycles-pp.rcu_segcblist_enqueue 0.00 +0.1 0.05 perf-profile.children.cycles-pp.__fget_light 0.17 ± 7% +0.1 0.22 ± 5% perf-profile.children.cycles-pp.generic_file_write_iter 0.24 ± 2% +0.1 0.30 ± 3% perf-profile.children.cycles-pp.anon_vma_fork 0.19 ± 3% +0.1 0.24 ± 4% perf-profile.children.cycles-pp.mem_cgroup_try_charge_delay 0.19 +0.1 0.24 ± 3% perf-profile.children.cycles-pp.finish_task_switch 0.18 ± 2% +0.1 0.24 ± 3% perf-profile.children.cycles-pp.__send_signal 0.18 ± 2% +0.1 0.23 ± 2% perf-profile.children.cycles-pp.__pagevec_lru_add_fn 0.00 +0.1 0.05 ± 8% perf-profile.children.cycles-pp.__pagevec_release 0.00 +0.1 0.05 ± 8% perf-profile.children.cycles-pp.__perf_event_header__init_id 0.00 +0.1 0.05 ± 8% perf-profile.children.cycles-pp.check_preempt_curr 0.21 ± 2% +0.1 0.27 ± 5% perf-profile.children.cycles-pp.autoremove_wake_function 0.21 ± 3% +0.1 0.27 ± 3% perf-profile.children.cycles-pp.generic_file_read_iter 0.30 ± 2% +0.1 0.36 ± 3% perf-profile.children.cycles-pp.wake_up_new_task 0.25 +0.1 0.30 perf-profile.children.cycles-pp.get_unmapped_area 0.19 ± 3% +0.1 0.24 ± 4% perf-profile.children.cycles-pp.get_user_arg_ptr 0.17 ± 2% +0.1 0.22 ± 3% perf-profile.children.cycles-pp.pgd_alloc 0.00 +0.1 0.05 ± 9% perf-profile.children.cycles-pp.page_add_new_anon_rmap 0.21 ± 2% +0.1 0.26 ± 4% perf-profile.children.cycles-pp.__might_sleep 0.31 +0.1 0.36 perf-profile.children.cycles-pp.native_flush_tlb_one_user 0.26 ± 3% +0.1 0.31 ± 2% perf-profile.children.cycles-pp.do_open_execat 0.20 ± 4% +0.1 0.25 ± 7% perf-profile.children.cycles-pp.__vmalloc_node_range 0.00 +0.1 0.06 ± 7% perf-profile.children.cycles-pp.__mod_node_page_state 0.00 +0.1 0.06 ± 7% perf-profile.children.cycles-pp.anon_vma_interval_tree_insert 0.22 +0.1 0.28 ± 4% perf-profile.children.cycles-pp.__wake_up_common_lock 0.22 ± 3% +0.1 0.28 ± 4% perf-profile.children.cycles-pp.do_notify_parent 0.28 ± 2% +0.1 0.34 ± 5% perf-profile.children.cycles-pp.__rb_insert_augmented 0.23 ± 2% +0.1 0.29 perf-profile.children.cycles-pp.strlen 0.19 ± 2% +0.1 0.25 ± 5% perf-profile.children.cycles-pp.copyout 0.19 ± 4% +0.1 0.25 ± 3% perf-profile.children.cycles-pp.mm_init 0.64 +0.1 0.70 perf-profile.children.cycles-pp.enqueue_task_fair 0.29 ± 2% +0.1 0.35 ± 3% perf-profile.children.cycles-pp.___perf_sw_event 0.24 ± 2% +0.1 0.30 ± 3% perf-profile.children.cycles-pp.terminate_walk 0.26 ± 3% +0.1 0.33 perf-profile.children.cycles-pp.free_unref_page_list 0.23 +0.1 0.30 ± 5% perf-profile.children.cycles-pp.__wake_up_common 0.32 +0.1 0.38 perf-profile.children.cycles-pp.__perf_sw_event 0.28 ± 2% +0.1 0.35 ± 4% perf-profile.children.cycles-pp.get_user_pages_remote 0.25 ± 2% +0.1 0.32 ± 4% perf-profile.children.cycles-pp.pipe_write 0.22 ± 3% +0.1 0.29 ± 5% perf-profile.children.cycles-pp.copy_page_to_iter 0.23 ± 2% +0.1 0.29 ± 2% perf-profile.children.cycles-pp._IO_file_open 0.32 ± 3% +0.1 0.38 ± 2% perf-profile.children.cycles-pp._fini 0.28 +0.1 0.34 ± 4% perf-profile.children.cycles-pp.__get_user_pages 0.34 ± 2% +0.1 0.41 perf-profile.children.cycles-pp.unlock_page 0.30 ± 2% +0.1 0.36 ± 4% perf-profile.children.cycles-pp.__pte_alloc 0.32 +0.1 0.39 perf-profile.children.cycles-pp.vma_interval_tree_remove 0.29 ± 2% +0.1 0.36 ± 3% perf-profile.children.cycles-pp.pipe_read 0.23 +0.1 0.30 ± 2% perf-profile.children.cycles-pp.do_dentry_open 0.10 ± 5% +0.1 0.16 ± 10% perf-profile.children.cycles-pp.run_ksoftirqd 0.22 ± 3% +0.1 0.29 ± 3% perf-profile.children.cycles-pp.d_alloc_parallel 0.39 +0.1 0.46 ± 3% perf-profile.children.cycles-pp.__fxstat64 0.34 +0.1 0.41 perf-profile.children.cycles-pp.flush_tlb_func_common 0.27 ± 3% +0.1 0.34 ± 3% perf-profile.children.cycles-pp.__d_lookup_rcu 0.34 ± 2% +0.1 0.41 ± 2% perf-profile.children.cycles-pp._IO_padn 0.16 ± 2% +0.1 0.23 ± 3% perf-profile.children.cycles-pp.release_task 0.24 +0.1 0.31 ± 3% perf-profile.children.cycles-pp.__lookup_slow 0.00 +0.1 0.07 ± 11% perf-profile.children.cycles-pp.do_prlimit 0.32 +0.1 0.40 ± 2% perf-profile.children.cycles-pp.selinux_inode_permission 0.39 ± 2% +0.1 0.46 ± 2% perf-profile.children.cycles-pp.find_vma 0.00 +0.1 0.08 ± 6% perf-profile.children.cycles-pp.__x64_sys_getrlimit 0.59 +0.1 0.67 ± 2% perf-profile.children.cycles-pp.schedule 0.28 +0.1 0.36 ± 2% perf-profile.children.cycles-pp.__list_del_entry_valid 0.35 ± 2% +0.1 0.42 ± 2% perf-profile.children.cycles-pp.security_inode_permission 0.32 ± 3% +0.1 0.40 ± 3% perf-profile.children.cycles-pp.__do_sys_newstat 0.27 ± 3% +0.1 0.35 ± 2% perf-profile.children.cycles-pp.lookup_slow 0.33 ± 2% +0.1 0.41 ± 2% perf-profile.children.cycles-pp._cond_resched 0.32 +0.1 0.40 ± 3% perf-profile.children.cycles-pp.remove_vma 0.30 ± 2% +0.1 0.39 ± 2% perf-profile.children.cycles-pp.perf_iterate_sb 0.13 ± 5% +0.1 0.21 ± 14% perf-profile.children.cycles-pp.find_vmap_area 0.33 ± 3% +0.1 0.41 ± 3% perf-profile.children.cycles-pp.vfs_statx 0.39 ± 2% +0.1 0.47 ± 2% perf-profile.children.cycles-pp._IO_fwrite 0.29 ± 2% +0.1 0.38 ± 3% perf-profile.children.cycles-pp.exit_to_usermode_loop 0.18 ± 8% +0.1 0.27 ± 12% perf-profile.children.cycles-pp.__vunmap 0.43 +0.1 0.52 ± 2% perf-profile.children.cycles-pp.flush_tlb_mm_range 0.37 ± 3% +0.1 0.46 ± 4% perf-profile.children.cycles-pp.___might_sleep 0.40 ± 3% +0.1 0.49 ± 2% perf-profile.children.cycles-pp.__slab_free 0.29 +0.1 0.38 ± 2% perf-profile.children.cycles-pp.create_elf_tables 0.18 ± 7% +0.1 0.27 ± 10% perf-profile.children.cycles-pp.free_work 0.37 ± 2% +0.1 0.46 perf-profile.children.cycles-pp.swapgs_restore_regs_and_return_to_usermode 0.18 ± 4% +0.1 0.28 ± 4% perf-profile.children.cycles-pp.wait_consider_task 0.39 ± 2% +0.1 0.48 ± 3% perf-profile.children.cycles-pp.__xstat64 0.39 +0.1 0.48 ± 2% perf-profile.children.cycles-pp.pte_alloc_one 0.29 ± 2% +0.1 0.39 ± 2% perf-profile.children.cycles-pp.__alloc_file 0.40 ± 2% +0.1 0.49 ± 2% perf-profile.children.cycles-pp.unlink_anon_vmas 0.32 ± 2% +0.1 0.41 ± 3% perf-profile.children.cycles-pp.alloc_empty_file 0.44 +0.1 0.54 perf-profile.children.cycles-pp.page_add_file_rmap 0.41 ± 2% +0.1 0.51 ± 2% perf-profile.children.cycles-pp.sched_exec 0.39 +0.1 0.48 perf-profile.children.cycles-pp.copy_page 0.31 ± 3% +0.1 0.41 ± 3% perf-profile.children.cycles-pp.copy_user_enhanced_fast_string 0.52 +0.1 0.62 ± 3% perf-profile.children.cycles-pp.native_irq_return_iret 0.20 ± 6% +0.1 0.30 ± 9% perf-profile.children.cycles-pp.process_one_work 0.36 ± 2% +0.1 0.47 ± 3% perf-profile.children.cycles-pp.__fput 0.51 +0.1 0.62 ± 2% perf-profile.children.cycles-pp.copy_page_range 0.40 ± 2% +0.1 0.50 ± 3% perf-profile.children.cycles-pp.__clear_user 0.36 ± 2% +0.1 0.47 perf-profile.children.cycles-pp.__x64_sys_munmap 0.35 +0.1 0.46 perf-profile.children.cycles-pp.strnlen_user 0.23 ± 5% +0.1 0.34 ± 9% perf-profile.children.cycles-pp.worker_thread 0.48 ± 2% +0.1 0.59 ± 2% perf-profile.children.cycles-pp.syscall_return_via_sysret 0.40 ± 2% +0.1 0.51 ± 3% perf-profile.children.cycles-pp.dput 0.44 +0.1 0.55 ± 4% perf-profile.children.cycles-pp.lookup_fast 1.14 +0.1 1.25 ± 4% perf-profile.children.cycles-pp.__softirqentry_text_start 0.42 ± 2% +0.1 0.54 ± 2% perf-profile.children.cycles-pp.free_pages_and_swap_cache 1.08 ± 2% +0.1 1.20 ± 2% perf-profile.children.cycles-pp.__sched_text_start 0.51 +0.1 0.63 ± 2% perf-profile.children.cycles-pp.ksys_read 0.40 +0.1 0.52 ± 4% perf-profile.children.cycles-pp.smpboot_thread_fn 0.46 +0.1 0.58 ± 3% perf-profile.children.cycles-pp.write 0.49 +0.1 0.62 ± 3% perf-profile.children.cycles-pp.read 0.42 ± 2% +0.1 0.55 ± 3% perf-profile.children.cycles-pp.__vfs_write 0.44 +0.1 0.57 ± 2% perf-profile.children.cycles-pp.task_work_run 0.99 ± 2% +0.1 1.12 ± 4% perf-profile.children.cycles-pp.rcu_process_callbacks 0.55 ± 2% +0.1 0.67 ± 2% perf-profile.children.cycles-pp.kmem_cache_free 0.54 +0.1 0.66 ± 3% perf-profile.children.cycles-pp.__vfs_read 0.62 +0.1 0.75 ± 3% perf-profile.children.cycles-pp.select_task_rq_fair 0.46 +0.1 0.59 ± 4% perf-profile.children.cycles-pp.vfs_write 0.45 ± 2% +0.1 0.58 ± 2% perf-profile.children.cycles-pp.do_faccessat 0.47 +0.1 0.60 ± 3% perf-profile.children.cycles-pp.ksys_write 0.15 ± 6% +0.1 0.28 ± 7% perf-profile.children.cycles-pp.queued_write_lock_slowpath 0.14 ± 8% +0.1 0.27 ± 9% perf-profile.children.cycles-pp.queued_read_lock_slowpath 0.51 ± 3% +0.1 0.65 perf-profile.children.cycles-pp.kmem_cache_alloc 0.58 +0.1 0.72 ± 2% perf-profile.children.cycles-pp.__entry_SYSCALL_64_trampoline 0.62 +0.1 0.77 perf-profile.children.cycles-pp.vfs_read 0.63 +0.2 0.78 ± 2% perf-profile.children.cycles-pp.perf_event_mmap 0.62 +0.2 0.77 ± 2% perf-profile.children.cycles-pp.alloc_pages_vma 0.35 ± 4% +0.2 0.51 ± 4% perf-profile.children.cycles-pp.lru_add_drain 0.35 ± 3% +0.2 0.52 ± 5% perf-profile.children.cycles-pp.lru_add_drain_cpu 0.60 ± 2% +0.2 0.78 ± 2% perf-profile.children.cycles-pp.path_lookupat 0.62 ± 2% +0.2 0.80 ± 2% perf-profile.children.cycles-pp.filename_lookup 0.43 ± 2% +0.2 0.61 ± 3% perf-profile.children.cycles-pp.pagevec_lru_move_fn 0.64 +0.2 0.83 ± 3% perf-profile.children.cycles-pp.walk_component 0.75 ± 2% +0.2 0.95 ± 2% perf-profile.children.cycles-pp._IO_default_xsputn 0.86 +0.2 1.07 ± 3% perf-profile.children.cycles-pp.clear_page_erms 0.84 +0.2 1.04 ± 3% perf-profile.children.cycles-pp.copy_strings 0.41 ± 4% +0.2 0.62 ± 5% perf-profile.children.cycles-pp.do_wait 0.43 ± 5% +0.2 0.64 ± 5% perf-profile.children.cycles-pp.__do_sys_wait4 0.42 ± 4% +0.2 0.64 ± 5% perf-profile.children.cycles-pp.kernel_wait4 0.95 ± 2% +0.2 1.16 perf-profile.children.cycles-pp._dl_addr 0.95 +0.2 1.17 ± 2% perf-profile.children.cycles-pp.wp_page_copy 0.80 +0.2 1.02 ± 2% perf-profile.children.cycles-pp.link_path_walk 0.93 +0.2 1.16 perf-profile.children.cycles-pp.vma_interval_tree_insert 0.95 +0.2 1.18 perf-profile.children.cycles-pp.alloc_set_pte 0.51 ± 3% +0.2 0.74 ± 3% perf-profile.children.cycles-pp.wait4 0.63 ± 2% +0.2 0.87 ± 4% perf-profile.children.cycles-pp.kthread 1.04 +0.2 1.27 ± 2% perf-profile.children.cycles-pp.do_wp_page 1.29 +0.2 1.54 ± 3% perf-profile.children.cycles-pp.wake_up_q 2.06 +0.3 2.33 ± 2% perf-profile.children.cycles-pp.up_write 9.02 +0.3 9.29 perf-profile.children.cycles-pp.handle_mm_fault 1.53 +0.3 1.79 ± 2% perf-profile.children.cycles-pp.rwsem_wake 0.81 +0.3 1.08 ± 3% perf-profile.children.cycles-pp.ret_from_fork 1.53 +0.3 1.81 ± 2% perf-profile.children.cycles-pp.call_rwsem_wake 1.10 +0.3 1.38 ± 2% perf-profile.children.cycles-pp.__strcoll_l 0.81 ± 2% +0.3 1.08 ± 4% perf-profile.children.cycles-pp._raw_spin_lock 0.93 +0.3 1.23 perf-profile.children.cycles-pp.rwsem_spin_on_owner 1.24 +0.3 1.54 ± 3% perf-profile.children.cycles-pp.get_page_from_freelist 1.35 +0.3 1.69 ± 3% perf-profile.children.cycles-pp.__alloc_pages_nodemask 1.68 +0.4 2.04 ± 3% perf-profile.children.cycles-pp.try_to_wake_up 1.22 +0.4 1.58 perf-profile.children.cycles-pp.mmap64 14.16 +0.4 14.53 perf-profile.children.cycles-pp.load_elf_binary 1.05 ± 2% +0.4 1.42 ± 4% perf-profile.children.cycles-pp.page_remove_rmap 14.19 +0.4 14.56 perf-profile.children.cycles-pp.search_binary_handler 2.09 ± 2% +0.4 2.52 perf-profile.children.cycles-pp.vfprintf 9.80 +0.5 10.26 perf-profile.children.cycles-pp.__do_page_fault 9.82 +0.5 10.29 perf-profile.children.cycles-pp.do_page_fault 1.27 ± 2% +0.5 1.79 ± 5% perf-profile.children.cycles-pp._raw_spin_lock_irqsave 1.96 +0.5 2.49 ± 2% perf-profile.children.cycles-pp.path_openat 2.01 +0.5 2.54 perf-profile.children.cycles-pp.do_sys_open 1.98 +0.5 2.52 ± 2% perf-profile.children.cycles-pp.do_filp_open 0.86 ± 2% +0.5 1.40 ± 2% perf-profile.children.cycles-pp.vm_munmap 10.22 +0.6 10.78 perf-profile.children.cycles-pp.page_fault 2.73 +0.6 3.29 perf-profile.children.cycles-pp.__vsnprintf_chk 2.76 +0.6 3.39 ± 2% perf-profile.children.cycles-pp.setlocale 1.77 ± 2% +0.7 2.50 ± 4% perf-profile.children.cycles-pp.release_pages 1.47 +0.8 2.27 ± 6% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath 2.12 ± 2% +0.8 2.93 ± 4% perf-profile.children.cycles-pp.tlb_flush_mmu_free 15.71 +0.8 16.53 perf-profile.children.cycles-pp.execve 16.01 +0.8 16.84 perf-profile.children.cycles-pp.__do_execve_file 16.02 +0.8 16.86 perf-profile.children.cycles-pp.__x64_sys_execve 2.24 ± 2% +0.8 3.09 ± 4% perf-profile.children.cycles-pp.arch_tlb_finish_mmu 2.25 ± 2% +0.8 3.10 ± 4% perf-profile.children.cycles-pp.tlb_finish_mmu 2.77 +0.9 3.62 ± 3% perf-profile.children.cycles-pp.unmap_page_range 2.89 +0.9 3.77 ± 3% perf-profile.children.cycles-pp.unmap_vmas 1.18 ± 3% +0.9 2.09 ± 2% perf-profile.children.cycles-pp.elf_map 41.69 -8.5 33.23 ± 3% perf-profile.self.cycles-pp.osq_lock 9.44 -1.3 8.12 ± 4% perf-profile.self.cycles-pp.intel_idle 4.14 ± 2% -0.6 3.53 perf-profile.self.cycles-pp.filemap_map_pages 0.54 ± 2% -0.2 0.37 perf-profile.self.cycles-pp.rwsem_down_write_failed 0.28 ± 3% -0.1 0.15 ± 2% perf-profile.self.cycles-pp.radix_tree_next_chunk 0.13 ± 6% -0.0 0.11 ± 4% perf-profile.self.cycles-pp.find_busiest_group 0.05 +0.0 0.06 perf-profile.self.cycles-pp.anon_vma_fork 0.05 +0.0 0.06 perf-profile.self.cycles-pp.__call_rcu 0.05 +0.0 0.06 perf-profile.self.cycles-pp.__unlock_page_memcg 0.06 +0.0 0.07 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe 0.06 +0.0 0.07 perf-profile.self.cycles-pp.do_wp_page 0.06 +0.0 0.07 perf-profile.self.cycles-pp.kfree 0.06 +0.0 0.07 perf-profile.self.cycles-pp.__switch_to 0.07 ± 5% +0.0 0.08 ± 5% perf-profile.self.cycles-pp.find_next_bit 0.07 +0.0 0.08 ± 5% perf-profile.self.cycles-pp.__tsearch 0.05 ± 8% +0.0 0.07 ± 7% perf-profile.self.cycles-pp.path_openat 0.05 +0.0 0.06 ± 6% perf-profile.self.cycles-pp.d_alloc_parallel 0.05 +0.0 0.06 ± 6% perf-profile.self.cycles-pp.unlock_page_memcg 0.05 +0.0 0.06 ± 6% perf-profile.self.cycles-pp.up_read 0.06 +0.0 0.07 ± 5% perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore 0.06 ± 6% +0.0 0.08 ± 6% perf-profile.self.cycles-pp.__perf_sw_event 0.06 ± 7% +0.0 0.07 perf-profile.self.cycles-pp.strncpy_from_user 0.09 ± 4% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.update_load_avg 0.07 +0.0 0.09 ± 5% perf-profile.self.cycles-pp.find_get_entry 0.05 +0.0 0.07 ± 7% perf-profile.self.cycles-pp.__d_alloc 0.05 ± 9% +0.0 0.07 perf-profile.self.cycles-pp.create_elf_tables 0.17 ± 3% +0.0 0.18 ± 2% perf-profile.self.cycles-pp.osq_unlock 0.07 ± 11% +0.0 0.09 perf-profile.self.cycles-pp.__alloc_pages_nodemask 0.07 ± 5% +0.0 0.09 perf-profile.self.cycles-pp.getenv 0.07 ± 11% +0.0 0.09 perf-profile.self.cycles-pp._vm_normal_page 0.11 ± 7% +0.0 0.12 ± 4% perf-profile.self.cycles-pp.__sched_text_start 0.09 ± 4% +0.0 0.11 ± 6% perf-profile.self.cycles-pp._cond_resched 0.09 ± 4% +0.0 0.11 perf-profile.self.cycles-pp.__list_add_valid 0.08 ± 5% +0.0 0.10 perf-profile.self.cycles-pp.perf_iterate_sb 0.07 ± 7% +0.0 0.08 ± 5% perf-profile.self.cycles-pp.__vma_adjust 0.08 ± 8% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.sync_regs 0.07 ± 7% +0.0 0.08 ± 5% perf-profile.self.cycles-pp.load_new_mm_cr3 0.06 ± 6% +0.0 0.08 perf-profile.self.cycles-pp._IO_setb 0.05 +0.0 0.07 ± 6% perf-profile.self.cycles-pp.__legitimize_mnt 0.08 ± 5% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.__libc_fork 0.08 ± 5% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.change_protection_range 0.06 +0.0 0.08 ± 5% perf-profile.self.cycles-pp.memchr 0.08 ± 6% +0.0 0.10 ± 5% perf-profile.self.cycles-pp.anon_vma_interval_tree_remove 0.07 ± 12% +0.0 0.09 ± 9% perf-profile.self.cycles-pp.try_charge 0.08 ± 5% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.inode_permission 0.07 +0.0 0.09 perf-profile.self.cycles-pp.avc_has_perm 0.08 +0.0 0.10 ± 7% perf-profile.self.cycles-pp.free_pgd_range 0.07 ± 7% +0.0 0.09 ± 5% perf-profile.self.cycles-pp.prepend_name 0.05 ± 8% +0.0 0.07 ± 5% perf-profile.self.cycles-pp.entry_SYSCALL_64_stage2 0.08 ± 10% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.available_idle_cpu 0.10 ± 8% +0.0 0.12 ± 4% perf-profile.self.cycles-pp.unlink_anon_vmas 0.10 ± 7% +0.0 0.12 ± 6% perf-profile.self.cycles-pp.copy_user_generic_unrolled 0.08 ± 8% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.memset_erms 0.07 ± 5% +0.0 0.10 ± 5% perf-profile.self.cycles-pp.rcu_all_qs 0.08 ± 6% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.lockref_get_not_dead 0.06 ± 9% +0.0 0.08 ± 5% perf-profile.self.cycles-pp.memcpy 0.08 ± 5% +0.0 0.10 perf-profile.self.cycles-pp.fput 0.12 ± 6% +0.0 0.15 ± 4% perf-profile.self.cycles-pp.do_syscall_64 0.07 ± 5% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.__snprintf_chk 0.04 ± 57% +0.0 0.06 ± 6% perf-profile.self.cycles-pp.vm_area_dup 0.11 ± 4% +0.0 0.13 ± 3% perf-profile.self.cycles-pp.__get_user_8 0.08 ± 5% +0.0 0.11 ± 7% perf-profile.self.cycles-pp.file_free_rcu 0.08 +0.0 0.11 ± 4% perf-profile.self.cycles-pp.__vma_link_rb 0.13 ± 5% +0.0 0.16 ± 5% perf-profile.self.cycles-pp.copy_page_range 0.11 ± 3% +0.0 0.14 ± 3% perf-profile.self.cycles-pp.perf_event_mmap 0.18 ± 2% +0.0 0.21 ± 2% perf-profile.self.cycles-pp.find_vma 0.14 +0.0 0.17 ± 2% perf-profile.self.cycles-pp.copy_process 0.10 ± 4% +0.0 0.13 perf-profile.self.cycles-pp.link_path_walk 0.08 +0.0 0.11 ± 4% perf-profile.self.cycles-pp.__fput 0.08 ± 8% +0.0 0.11 ± 4% perf-profile.self.cycles-pp.free_pcppages_bulk 0.04 ± 57% +0.0 0.07 ± 7% perf-profile.self.cycles-pp.do_mmap 0.04 ± 57% +0.0 0.07 ± 7% perf-profile.self.cycles-pp.kmem_cache_alloc_trace 0.10 ± 4% +0.0 0.13 ± 3% perf-profile.self.cycles-pp.vma_interval_tree_augment_rotate 0.15 ± 2% +0.0 0.18 ± 2% perf-profile.self.cycles-pp.vma_compute_subtree_gap 0.14 ± 3% +0.0 0.17 ± 4% perf-profile.self.cycles-pp.avc_has_perm_noaudit 0.12 +0.0 0.15 ± 2% perf-profile.self.cycles-pp.lock_page_memcg 0.11 ± 4% +0.0 0.15 ± 2% perf-profile.self.cycles-pp._init 0.10 ± 5% +0.0 0.13 ± 3% perf-profile.self.cycles-pp.unmapped_area_topdown 0.11 +0.0 0.14 ± 3% perf-profile.self.cycles-pp.lockref_put_or_lock 0.03 ±100% +0.0 0.06 perf-profile.self.cycles-pp.unmap_vmas 0.18 +0.0 0.21 ± 4% perf-profile.self.cycles-pp.handle_mm_fault 0.09 +0.0 0.12 ± 4% perf-profile.self.cycles-pp.wake_q_add 0.15 ± 5% +0.0 0.18 ± 2% perf-profile.self.cycles-pp.kmem_cache_free 0.08 ± 5% +0.0 0.12 ± 5% perf-profile.self.cycles-pp.queued_write_lock_slowpath 0.18 ± 3% +0.0 0.22 ± 3% perf-profile.self.cycles-pp._IO_file_xsputn 0.17 ± 2% +0.0 0.21 ± 3% perf-profile.self.cycles-pp.strchrnul 0.16 ± 5% +0.0 0.20 ± 4% perf-profile.self.cycles-pp.memcpy_erms 0.12 ± 3% +0.0 0.16 ± 4% perf-profile.self.cycles-pp.__rb_erase_color 0.12 ± 7% +0.0 0.15 ± 3% perf-profile.self.cycles-pp.__pagevec_lru_add_fn 0.17 ± 2% +0.0 0.21 ± 2% perf-profile.self.cycles-pp.vmacache_find 0.08 +0.0 0.12 ± 11% perf-profile.self.cycles-pp.rcu_cblist_dequeue 0.16 +0.0 0.20 perf-profile.self.cycles-pp.mmap_region 0.14 +0.0 0.18 ± 2% perf-profile.self.cycles-pp.mark_page_accessed 0.07 ± 6% +0.0 0.11 ± 11% perf-profile.self.cycles-pp.queued_read_lock_slowpath 0.21 ± 2% +0.0 0.26 ± 4% perf-profile.self.cycles-pp.get_page_from_freelist 0.17 ± 2% +0.0 0.22 perf-profile.self.cycles-pp.malloc 0.16 ± 2% +0.0 0.21 ± 2% perf-profile.self.cycles-pp.strlen 0.01 ±173% +0.0 0.06 ± 7% perf-profile.self.cycles-pp.down_read_trylock 0.01 ±173% +0.0 0.06 ± 7% perf-profile.self.cycles-pp.__errno_location 0.17 ± 2% +0.0 0.22 ± 3% perf-profile.self.cycles-pp.selinux_inode_permission 0.26 +0.0 0.30 ± 5% perf-profile.self.cycles-pp.__rb_insert_augmented 0.18 ± 2% +0.0 0.23 ± 5% perf-profile.self.cycles-pp.__might_sleep 0.00 +0.1 0.05 perf-profile.self.cycles-pp.load_elf_binary 0.00 +0.1 0.05 perf-profile.self.cycles-pp.page_fault 0.00 +0.1 0.05 perf-profile.self.cycles-pp.pagevec_lru_move_fn 0.00 +0.1 0.05 perf-profile.self.cycles-pp.flush_tlb_mm_range 0.00 +0.1 0.05 perf-profile.self.cycles-pp.__inode_security_revalidate 0.00 +0.1 0.05 perf-profile.self.cycles-pp.dup_fd 0.00 +0.1 0.05 perf-profile.self.cycles-pp.acct_collect 0.00 +0.1 0.05 perf-profile.self.cycles-pp.vma_merge 0.00 +0.1 0.05 perf-profile.self.cycles-pp.rcu_segcblist_enqueue 0.24 ± 2% +0.1 0.30 ± 2% perf-profile.self.cycles-pp.___perf_sw_event 0.00 +0.1 0.05 ± 8% perf-profile.self.cycles-pp.mem_cgroup_throttle_swaprate 0.00 +0.1 0.05 ± 8% perf-profile.self.cycles-pp.anon_vma_interval_tree_insert 0.44 ± 2% +0.1 0.49 ± 4% perf-profile.self.cycles-pp.down_write 0.00 +0.1 0.05 ± 9% perf-profile.self.cycles-pp.__might_fault 0.00 +0.1 0.05 ± 9% perf-profile.self.cycles-pp.__mod_node_page_state 0.22 +0.1 0.28 ± 3% perf-profile.self.cycles-pp.__vsnprintf_chk 0.15 ± 2% +0.1 0.21 ± 5% perf-profile.self.cycles-pp.__alloc_file 0.30 +0.1 0.36 perf-profile.self.cycles-pp.native_flush_tlb_one_user 0.18 ± 4% +0.1 0.24 ± 3% perf-profile.self.cycles-pp.__do_page_fault 0.31 ± 2% +0.1 0.37 perf-profile.self.cycles-pp._IO_padn 0.33 ± 3% +0.1 0.40 perf-profile.self.cycles-pp.unlock_page 0.21 ± 3% +0.1 0.28 perf-profile.self.cycles-pp._raw_spin_lock_irqsave 0.20 ± 2% +0.1 0.27 ± 4% perf-profile.self.cycles-pp.copy_user_enhanced_fast_string 0.36 +0.1 0.43 ± 2% perf-profile.self.cycles-pp.page_add_file_rmap 0.31 +0.1 0.38 perf-profile.self.cycles-pp.vma_interval_tree_remove 0.27 ± 3% +0.1 0.34 ± 3% perf-profile.self.cycles-pp.__d_lookup_rcu 0.28 +0.1 0.35 ± 3% perf-profile.self.cycles-pp.__list_del_entry_valid 0.41 +0.1 0.49 ± 3% perf-profile.self.cycles-pp.select_task_rq_fair 0.34 +0.1 0.42 perf-profile.self.cycles-pp.swapgs_restore_regs_and_return_to_usermode 0.35 ± 3% +0.1 0.43 ± 3% perf-profile.self.cycles-pp.___might_sleep 0.29 ± 3% +0.1 0.38 perf-profile.self.cycles-pp.kmem_cache_alloc 0.36 ± 3% +0.1 0.45 perf-profile.self.cycles-pp._IO_fwrite 0.44 +0.1 0.53 perf-profile.self.cycles-pp.__handle_mm_fault 0.39 ± 3% +0.1 0.48 ± 2% perf-profile.self.cycles-pp.__slab_free 0.32 ± 2% +0.1 0.41 perf-profile.self.cycles-pp.alloc_set_pte 0.38 +0.1 0.47 perf-profile.self.cycles-pp.copy_page 0.52 +0.1 0.62 ± 3% perf-profile.self.cycles-pp.native_irq_return_iret 0.34 ± 2% +0.1 0.45 ± 2% perf-profile.self.cycles-pp.strnlen_user 0.41 ± 2% +0.1 0.52 ± 2% perf-profile.self.cycles-pp.free_pages_and_swap_cache 0.47 ± 2% +0.1 0.59 ± 2% perf-profile.self.cycles-pp.syscall_return_via_sysret 0.51 +0.1 0.64 ± 4% perf-profile.self.cycles-pp._raw_spin_lock 0.53 +0.1 0.66 perf-profile.self.cycles-pp.__entry_SYSCALL_64_trampoline 0.65 ± 2% +0.2 0.82 perf-profile.self.cycles-pp._IO_default_xsputn 0.84 +0.2 1.05 ± 3% perf-profile.self.cycles-pp.clear_page_erms 0.91 ± 2% +0.2 1.13 perf-profile.self.cycles-pp._dl_addr 0.91 +0.2 1.14 perf-profile.self.cycles-pp.vma_interval_tree_insert 1.08 +0.3 1.35 ± 2% perf-profile.self.cycles-pp.__strcoll_l 0.91 +0.3 1.20 perf-profile.self.cycles-pp.rwsem_spin_on_owner 0.92 ± 2% +0.3 1.26 ± 4% perf-profile.self.cycles-pp.page_remove_rmap 1.33 +0.4 1.72 ± 2% perf-profile.self.cycles-pp.unmap_page_range 1.75 ± 2% +0.4 2.18 perf-profile.self.cycles-pp.vfprintf 1.23 ± 2% +0.5 1.73 ± 5% perf-profile.self.cycles-pp.release_pages 1.47 +0.8 2.26 ± 6% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Rong Chen

1 year, 11 months

5
9
0 / 0

[mm] 9bc8039e71: will-it-scale.per_thread_ops -64.1% regression

by kernel test robot

Greeting, FYI, we noticed a -64.1% regression of will-it-scale.per_thread_ops due to commit: commit: 9bc8039e715da3b53dbac89525323a9f2f69b7b5 ("mm: brk: downgrade mmap_sem to read when shrinking") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master in testcase: will-it-scale on test machine: 8 threads Ivy Bridge with 16G memory with following parameters: nr_task: 100% mode: thread test: brk1 ucode: 0x20 cpufreq_governor: performance test-description: Will It Scale takes a testcase and runs it from 1 through to n parallel copies to see if the testcase will scale. It builds both a process and threads based test in order to see any differences between the two. test-url: https://github.com/antonblanchard/will-it-scale Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml ========================================================================================= compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase/ucode: gcc-7/performance/x86_64-rhel-7.2/thread/100%/debian-x86_64-2018-04-03.cgz/lkp-ivb-d01/brk1/will-it-scale/0x20 commit: 85a06835f6 ("mm: mremap: downgrade mmap_sem to read when shrinking") 9bc8039e71 ("mm: brk: downgrade mmap_sem to read when shrinking") 85a06835f6f1ba79 9bc8039e715da3b53dbac89525 ---------------- -------------------------- fail:runs %reproduction fail:runs | | | 1:4 -25% :4 kmsg.a0f723>]usb_hcd_irq :4 25% 1:4 kmsg.b6a4a7>]usb_hcd_irq 1:4 -25% :4 kmsg.cae42e>]usb_hcd_irq :4 25% 1:4 kmsg.fb#f87>]usb_hcd_irq :4 25% 1:4 kmsg.fd#>]usb_hcd_irq %stddev %change %stddev \ | \ 196250 ± 8% -64.1% 70494 will-it-scale.per_thread_ops 127330 ± 19% -98.0% 2525 ± 24% will-it-scale.time.involuntary_context_switches 727.50 ± 2% -77.0% 167.25 will-it-scale.time.percent_of_cpu_this_job_got 2141 ± 2% -77.6% 479.12 will-it-scale.time.system_time 50.48 ± 7% -48.5% 25.98 will-it-scale.time.user_time 34925294 ± 18% +270.3% 1.293e+08 ± 4% will-it-scale.time.voluntary_context_switches 1570007 ± 8% -64.1% 563958 will-it-scale.workload 6435 ± 2% -6.4% 6024 proc-vmstat.nr_shmem 1298 ± 16% -44.5% 721.00 ± 18% proc-vmstat.pgactivate 2341 +16.4% 2724 slabinfo.kmalloc-96.active_objs 2341 +16.4% 2724 slabinfo.kmalloc-96.num_objs 6346 ±150% -87.8% 776.25 ± 9% softirqs.NET_RX 160107 ± 8% +151.9% 403273 softirqs.SCHED 1097999 -13.0% 955526 softirqs.TIMER 5.50 ± 9% -81.8% 1.00 vmstat.procs.r 230700 ± 19% +269.9% 853292 ± 4% vmstat.system.cs 26706 ± 3% +15.7% 30910 ± 5% vmstat.system.in 11.24 ± 23% +72.2 83.39 mpstat.cpu.idle% 0.00 ±131% +0.0 0.04 ± 99% mpstat.cpu.iowait% 86.32 ± 2% -70.8 15.54 mpstat.cpu.sys% 2.44 ± 7% -1.4 1.04 ± 8% mpstat.cpu.usr% 20610709 ± 15% +2376.0% 5.103e+08 ± 34% cpuidle.C1.time 3233399 ± 8% +241.5% 11042785 ± 25% cpuidle.C1.usage 36172040 ± 6% +931.3% 3.73e+08 ± 15% cpuidle.C1E.time 783605 ± 4% +548.7% 5083041 ± 18% cpuidle.C1E.usage 28753819 ± 39% +1054.5% 3.319e+08 ± 49% cpuidle.C3.time 283912 ± 25% +688.4% 2238225 ± 34% cpuidle.C3.usage 1.507e+08 ± 47% +292.3% 5.913e+08 ± 28% cpuidle.C6.time 339861 ± 37% +549.7% 2208222 ± 24% cpuidle.C6.usage 2709719 ± 5% +824.2% 25043444 cpuidle.POLL.time 28602864 ± 18% +173.7% 78276116 ± 10% cpuidle.POLL.usage 3338 ± 2% -71.8% 941.75 turbostat.Avg_MHz 90.40 ± 2% -65.1 25.31 turbostat.Busy% 3233316 ± 8% +241.5% 11042588 ± 25% turbostat.C1 0.83 ± 16% +20.2 21.02 ± 35% turbostat.C1% 783559 ± 4% +548.7% 5082972 ± 18% turbostat.C1E 1.46 ± 7% +13.9 15.34 ± 15% turbostat.C1E% 283898 ± 25% +688.4% 2238202 ± 34% turbostat.C3 1.17 ± 39% +12.5 13.66 ± 49% turbostat.C3% 339857 ± 37% +549.7% 2208205 ± 24% turbostat.C6 6.05 ± 46% +18.2 24.30 ± 28% turbostat.C6% 6.12 ± 18% +755.7% 52.39 ± 9% turbostat.CPU%c1 2.18 ±105% +735.9% 18.18 ± 45% turbostat.CPU%c3 1.30 ±117% +216.3% 4.12 ± 92% turbostat.CPU%c6 38.31 -37.2% 24.06 turbostat.CorWatt 8285923 ± 2% +13.9% 9436075 ± 6% turbostat.IRQ 43.17 -33.4% 28.77 turbostat.PkgWatt 8.92e+11 -67.9% 2.862e+11 ± 31% perf-stat.branch-instructions 0.55 ± 4% +1.0 1.53 ± 5% perf-stat.branch-miss-rate% 0.19 ± 22% +0.7 0.89 ± 69% perf-stat.cache-miss-rate% 2.401e+10 -57.3% 1.025e+10 ± 28% perf-stat.cache-references 71517245 ± 18% +264.5% 2.607e+08 ± 4% perf-stat.context-switches 1.85 -21.9% 1.44 ± 2% perf-stat.cpi 8.223e+12 ± 2% -76.8% 1.904e+12 ± 32% perf-stat.cpu-cycles 0.34 ± 11% +0.3 0.63 ± 9% perf-stat.dTLB-load-miss-rate% 4.563e+09 ± 10% -50.7% 2.252e+09 ± 27% perf-stat.dTLB-load-misses 1.357e+12 -73.2% 3.63e+11 ± 31% perf-stat.dTLB-loads 0.01 ± 28% +0.0 0.02 ± 10% perf-stat.dTLB-store-miss-rate% 20813820 ± 31% +109.2% 43542782 ± 25% perf-stat.dTLB-store-misses 97.04 -13.4 83.65 ± 2% perf-stat.iTLB-load-miss-rate% 5.871e+08 ± 8% -48.9% 3.001e+08 ± 35% perf-stat.iTLB-load-misses 17851698 ± 4% +235.7% 59936365 ± 41% perf-stat.iTLB-loads 4.456e+12 -70.6% 1.311e+12 ± 31% perf-stat.instructions 7651 ± 9% -41.0% 4513 ± 11% perf-stat.instructions-per-iTLB-miss 0.54 +28.2% 0.69 ± 2% perf-stat.ipc 131812 ± 2% -75.7% 31973 sched_debug.cfs_rq:/.exec_clock.avg 133451 ± 2% -67.5% 43371 ± 30% sched_debug.cfs_rq:/.exec_clock.max 130067 ± 4% -83.3% 21767 ± 30% sched_debug.cfs_rq:/.exec_clock.min 1220 ± 87% +592.8% 8456 ± 98% sched_debug.cfs_rq:/.exec_clock.stddev 229519 ± 6% +70.6% 391456 ± 4% sched_debug.cfs_rq:/.load.max 65462 ± 11% +141.1% 157808 ± 4% sched_debug.cfs_rq:/.load.stddev 82.00 ± 3% -83.5% 13.54 ± 30% sched_debug.cfs_rq:/.load_avg.min 985041 ± 4% -90.8% 90737 sched_debug.cfs_rq:/.min_vruntime.avg 1004586 ± 4% -87.2% 128180 ± 21% sched_debug.cfs_rq:/.min_vruntime.max 969836 ± 5% -93.6% 62139 ± 28% sched_debug.cfs_rq:/.min_vruntime.min 0.77 ± 5% -42.6% 0.44 ± 10% sched_debug.cfs_rq:/.nr_running.avg 0.34 ± 12% +39.5% 0.48 sched_debug.cfs_rq:/.nr_running.stddev 1.79 ± 7% -63.1% 0.66 ± 22% sched_debug.cfs_rq:/.nr_spread_over.avg 10.54 ± 20% -68.0% 3.38 ± 26% sched_debug.cfs_rq:/.nr_spread_over.max 3.52 ± 18% -68.3% 1.12 ± 25% sched_debug.cfs_rq:/.nr_spread_over.stddev 96.05 ± 6% -33.5% 63.92 ± 8% sched_debug.cfs_rq:/.runnable_load_avg.avg 237.58 ± 7% +31.3% 311.83 ± 2% sched_debug.cfs_rq:/.runnable_load_avg.max 67.84 ± 9% +55.7% 105.65 sched_debug.cfs_rq:/.runnable_load_avg.stddev 200408 ± 8% +80.6% 361912 ± 6% sched_debug.cfs_rq:/.runnable_weight.max 56555 ± 14% +160.3% 147211 ± 5% sched_debug.cfs_rq:/.runnable_weight.stddev 936.14 ± 2% -55.3% 418.09 ± 6% sched_debug.cfs_rq:/.util_avg.avg 1341 ± 11% -43.2% 762.54 ± 11% sched_debug.cfs_rq:/.util_avg.max 587.25 ± 18% -69.6% 178.75 ± 23% sched_debug.cfs_rq:/.util_avg.min 518.64 ± 11% -90.2% 50.84 ± 29% sched_debug.cfs_rq:/.util_est_enqueued.avg 1018 ± 4% -70.8% 297.75 ± 23% sched_debug.cfs_rq:/.util_est_enqueued.max 386.54 ± 6% -73.6% 102.24 ± 21% sched_debug.cfs_rq:/.util_est_enqueued.stddev 116574 ± 30% +67.2% 194964 ± 30% sched_debug.cpu.avg_idle.avg 93.29 ± 16% -35.1% 60.54 ± 8% sched_debug.cpu.cpu_load[0].avg 221.08 ± 8% +34.3% 296.96 ± 9% sched_debug.cpu.cpu_load[0].max 63.60 ± 9% +57.6% 100.26 ± 9% sched_debug.cpu.cpu_load[0].stddev 95.54 ± 13% -47.7% 49.98 ± 7% sched_debug.cpu.cpu_load[1].avg 41.00 ± 52% -97.7% 0.96 ± 68% sched_debug.cpu.cpu_load[1].min 44.57 ± 16% +38.2% 61.57 ± 8% sched_debug.cpu.cpu_load[1].stddev 98.62 ± 10% -58.2% 41.19 ± 7% sched_debug.cpu.cpu_load[2].avg 169.42 ± 8% -28.1% 121.79 ± 9% sched_debug.cpu.cpu_load[2].max 58.04 ± 35% -94.5% 3.17 ± 47% sched_debug.cpu.cpu_load[2].min 100.91 ± 8% -64.5% 35.80 ± 10% sched_debug.cpu.cpu_load[3].avg 155.21 ± 5% -39.6% 93.79 ± 13% sched_debug.cpu.cpu_load[3].max 70.42 ± 22% -93.3% 4.71 ± 36% sched_debug.cpu.cpu_load[3].min 102.59 ± 6% -68.9% 31.92 ± 17% sched_debug.cpu.cpu_load[4].avg 144.54 ± 5% -44.9% 79.71 ± 28% sched_debug.cpu.cpu_load[4].max 78.79 ± 15% -92.6% 5.83 ± 30% sched_debug.cpu.cpu_load[4].min 1044 ± 5% -33.5% 694.38 ± 4% sched_debug.cpu.curr->pid.avg 835.66 ± 4% +19.0% 994.65 sched_debug.cpu.curr->pid.stddev 228643 ± 6% +71.3% 391578 ± 4% sched_debug.cpu.load.max 64674 ± 11% +143.6% 157538 ± 4% sched_debug.cpu.load.stddev 0.00 ± 5% -48.4% 0.00 ± 46% sched_debug.cpu.next_balance.stddev 1.03 ± 16% -44.9% 0.57 ± 13% sched_debug.cpu.nr_running.avg 6206533 ± 12% +167.7% 16616895 ± 4% sched_debug.cpu.nr_switches.avg 6795551 ± 18% +222.4% 21911344 ± 19% sched_debug.cpu.nr_switches.max 5666982 ± 9% +115.3% 12201219 ± 17% sched_debug.cpu.nr_switches.min 351168 ± 73% +837.8% 3293280 ± 72% sched_debug.cpu.nr_switches.stddev 0.32 ± 21% +109.8% 0.67 ± 8% sched_debug.cpu.nr_uninterruptible.avg 6297340 ± 12% +163.9% 16617675 ± 4% sched_debug.cpu.sched_count.avg 6887997 ± 18% +218.1% 21912464 ± 19% sched_debug.cpu.sched_count.max 5753875 ± 8% +112.1% 12201952 ± 17% sched_debug.cpu.sched_count.min 352908 ± 73% +833.2% 3293323 ± 71% sched_debug.cpu.sched_count.stddev 3067826 ± 12% +170.7% 8305951 ± 4% sched_debug.cpu.sched_goidle.avg 3361061 ± 18% +225.9% 10953485 ± 19% sched_debug.cpu.sched_goidle.max 2798299 ± 9% +117.9% 6098033 ± 17% sched_debug.cpu.sched_goidle.min 175049 ± 72% +840.7% 1646720 ± 72% sched_debug.cpu.sched_goidle.stddev 3232125 ± 11% +159.6% 8389199 ± 4% sched_debug.cpu.ttwu_count.avg 3533980 ± 16% +275.2% 13260800 ± 36% sched_debug.cpu.ttwu_count.max 271212 ±109% +1140.0% 3363044 ± 83% sched_debug.cpu.ttwu_count.stddev 107111 ± 9% +30.6% 139843 ± 17% sched_debug.cpu.ttwu_local.max 85459 ± 6% -29.3% 60381 ± 44% sched_debug.cpu.ttwu_local.min 6551 ± 69% +374.8% 31104 ± 78% sched_debug.cpu.ttwu_local.stddev 82.07 -72.2 9.87 ± 5% perf-profile.calltrace.cycles-pp.down_write_killable.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 81.23 -72.0 9.20 ± 5% perf-profile.calltrace.cycles-pp.call_rwsem_down_write_failed_killable.down_write_killable.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 81.17 -72.0 9.18 ± 5% perf-profile.calltrace.cycles-pp.rwsem_down_write_failed_killable.call_rwsem_down_write_failed_killable.down_write_killable.__x64_sys_brk.do_syscall_64 68.76 -68.8 0.00 perf-profile.calltrace.cycles-pp.osq_lock.rwsem_down_write_failed_killable.call_rwsem_down_write_failed_killable.down_write_killable.__x64_sys_brk 94.12 -54.6 39.55 ± 2% perf-profile.calltrace.cycles-pp.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 94.54 -54.4 40.16 ± 3% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe 94.69 -54.3 40.35 ± 3% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe 10.16 ± 3% -10.0 0.19 ±173% perf-profile.calltrace.cycles-pp.rwsem_spin_on_owner.rwsem_down_write_failed_killable.call_rwsem_down_write_failed_killable.down_write_killable.__x64_sys_brk 0.89 ± 10% -0.2 0.67 ± 6% perf-profile.calltrace.cycles-pp.anon_vma_clone.__split_vma.__do_munmap.__x64_sys_brk.do_syscall_64 0.66 ± 6% +0.4 1.03 ± 8% perf-profile.calltrace.cycles-pp.unmap_page_range.unmap_vmas.unmap_region.__do_munmap.__x64_sys_brk 0.74 ± 6% +0.4 1.16 ± 8% perf-profile.calltrace.cycles-pp.unmap_vmas.unmap_region.__do_munmap.__x64_sys_brk.do_syscall_64 1.42 ± 7% +0.4 1.85 ± 6% perf-profile.calltrace.cycles-pp.vma_merge.do_brk_flags.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.6 0.59 ± 11% perf-profile.calltrace.cycles-pp.__task_rq_lock.try_to_wake_up.wake_up_q.rwsem_wake.call_rwsem_wake 0.00 +0.6 0.63 ± 13% perf-profile.calltrace.cycles-pp.smp_apic_timer_interrupt.apic_timer_interrupt.cpuidle_enter_state.do_idle.cpu_startup_entry 0.00 +0.7 0.66 ± 18% perf-profile.calltrace.cycles-pp.tick_nohz_idle_enter.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 0.00 +0.7 0.67 ± 9% perf-profile.calltrace.cycles-pp.pick_next_task_fair.__sched_text_start.schedule.rwsem_down_write_failed_killable.call_rwsem_down_write_failed_killable 0.00 +0.7 0.67 ± 11% perf-profile.calltrace.cycles-pp.unlink_anon_vmas.free_pgtables.unmap_region.__do_munmap.__x64_sys_brk 0.00 +0.7 0.67 ± 7% perf-profile.calltrace.cycles-pp.pick_next_task_idle.__sched_text_start.schedule.rwsem_down_write_failed_killable.call_rwsem_down_write_failed_killable 0.00 +0.7 0.68 ± 12% perf-profile.calltrace.cycles-pp.find_next_bit.__next_timer_interrupt.get_next_timer_interrupt.tick_nohz_next_event.tick_nohz_get_sleep_length 0.00 +0.7 0.68 ± 13% perf-profile.calltrace.cycles-pp.apic_timer_interrupt.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary 0.67 ± 7% +0.7 1.35 ± 9% perf-profile.calltrace.cycles-pp.perf_event_mmap.do_brk_flags.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.14 ±173% +0.7 0.87 ± 5% perf-profile.calltrace.cycles-pp.get_unmapped_area.do_brk_flags.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.8 0.77 ± 8% perf-profile.calltrace.cycles-pp.security_vm_enough_memory_mm.do_brk_flags.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.8 0.78 ± 11% perf-profile.calltrace.cycles-pp.free_pgtables.unmap_region.__do_munmap.__x64_sys_brk.do_syscall_64 0.00 +0.9 0.87 ± 17% perf-profile.calltrace.cycles-pp.unwind_next_frame.__save_stack_trace.save_stack_trace_tsk.__account_scheduler_latency.enqueue_entity 0.00 +0.9 0.91 ± 8% perf-profile.calltrace.cycles-pp.update_curr.dequeue_entity.dequeue_task_fair.__sched_text_start.schedule 1.75 ± 10% +0.9 2.66 ± 5% perf-profile.calltrace.cycles-pp.unmap_region.__do_munmap.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +1.0 0.98 ± 7% perf-profile.calltrace.cycles-pp.__switch_to 0.00 +1.0 0.98 ± 9% perf-profile.calltrace.cycles-pp.__switch_to_asm 0.00 +1.1 1.10 ± 3% perf-profile.calltrace.cycles-pp.update_load_avg.dequeue_entity.dequeue_task_fair.__sched_text_start.schedule 0.00 +1.1 1.11 ± 20% perf-profile.calltrace.cycles-pp.select_task_rq_fair.try_to_wake_up.wake_up_q.rwsem_wake.call_rwsem_wake 0.00 +1.2 1.20 ± 6% perf-profile.calltrace.cycles-pp.__next_timer_interrupt.get_next_timer_interrupt.tick_nohz_next_event.tick_nohz_get_sleep_length.menu_select 0.00 +1.6 1.64 ± 7% perf-profile.calltrace.cycles-pp.set_next_entity.pick_next_task_fair.__sched_text_start.schedule_idle.do_idle 0.00 +1.9 1.86 ± 14% perf-profile.calltrace.cycles-pp.__save_stack_trace.save_stack_trace_tsk.__account_scheduler_latency.enqueue_entity.enqueue_task_fair 5.75 ± 4% +1.9 7.64 ± 5% perf-profile.calltrace.cycles-pp.__do_munmap.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +1.9 1.91 ± 14% perf-profile.calltrace.cycles-pp.save_stack_trace_tsk.__account_scheduler_latency.enqueue_entity.enqueue_task_fair.ttwu_do_activate 0.00 +2.1 2.09 ± 11% perf-profile.calltrace.cycles-pp.get_next_timer_interrupt.tick_nohz_next_event.tick_nohz_get_sleep_length.menu_select.do_idle 3.38 ± 5% +2.1 5.47 ± 4% perf-profile.calltrace.cycles-pp.do_brk_flags.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +2.2 2.25 ± 14% perf-profile.calltrace.cycles-pp.__account_scheduler_latency.enqueue_entity.enqueue_task_fair.ttwu_do_activate.try_to_wake_up 0.00 +2.5 2.46 ± 7% perf-profile.calltrace.cycles-pp.pick_next_task_fair.__sched_text_start.schedule_idle.do_idle.cpu_startup_entry 0.00 +2.5 2.46 ± 10% perf-profile.calltrace.cycles-pp.tick_nohz_next_event.tick_nohz_get_sleep_length.menu_select.do_idle.cpu_startup_entry 0.00 +3.1 3.06 ± 6% perf-profile.calltrace.cycles-pp.tick_nohz_get_sleep_length.menu_select.do_idle.cpu_startup_entry.start_secondary 0.00 +3.5 3.52 ± 4% perf-profile.calltrace.cycles-pp.dequeue_entity.dequeue_task_fair.__sched_text_start.schedule.rwsem_down_write_failed_killable 0.00 +3.8 3.80 ± 8% perf-profile.calltrace.cycles-pp.poll_idle.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary 0.00 +4.1 4.10 ± 3% perf-profile.calltrace.cycles-pp.dequeue_task_fair.__sched_text_start.schedule.rwsem_down_write_failed_killable.call_rwsem_down_write_failed_killable 0.00 +4.7 4.66 ± 11% perf-profile.calltrace.cycles-pp.__sched_text_start.schedule_idle.do_idle.cpu_startup_entry.start_secondary 0.00 +4.8 4.83 ± 11% perf-profile.calltrace.cycles-pp.schedule_idle.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 0.00 +5.3 5.27 ± 6% perf-profile.calltrace.cycles-pp.menu_select.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 0.91 ± 16% +5.5 6.44 ± 4% perf-profile.calltrace.cycles-pp.try_to_wake_up.wake_up_q.rwsem_wake.call_rwsem_wake.up_write 0.95 ± 15% +5.7 6.70 ± 4% perf-profile.calltrace.cycles-pp.wake_up_q.rwsem_wake.call_rwsem_wake.up_write.__x64_sys_brk 1.73 ± 11% +5.8 7.53 ± 4% perf-profile.calltrace.cycles-pp.up_write.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +6.2 6.15 ± 2% perf-profile.calltrace.cycles-pp.enqueue_entity.enqueue_task_fair.ttwu_do_activate.try_to_wake_up.wake_up_q 1.15 ± 17% +6.2 7.33 ± 4% perf-profile.calltrace.cycles-pp.rwsem_wake.call_rwsem_wake.up_write.__x64_sys_brk.do_syscall_64 1.15 ± 17% +6.2 7.36 ± 4% perf-profile.calltrace.cycles-pp.call_rwsem_wake.up_write.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +6.9 6.93 ± 3% perf-profile.calltrace.cycles-pp.try_to_wake_up.wake_up_q.rwsem_wake.call_rwsem_wake.up_read 0.00 +6.9 6.95 ± 2% perf-profile.calltrace.cycles-pp.enqueue_task_fair.ttwu_do_activate.try_to_wake_up.wake_up_q.rwsem_wake 0.00 +7.1 7.15 ± 3% perf-profile.calltrace.cycles-pp.wake_up_q.rwsem_wake.call_rwsem_wake.up_read.__x64_sys_brk 0.00 +7.3 7.33 ± 2% perf-profile.calltrace.cycles-pp.ttwu_do_activate.try_to_wake_up.wake_up_q.rwsem_wake.call_rwsem_wake 0.00 +7.8 7.75 ± 3% perf-profile.calltrace.cycles-pp.rwsem_wake.call_rwsem_wake.up_read.__x64_sys_brk.do_syscall_64 0.00 +7.8 7.79 ± 3% perf-profile.calltrace.cycles-pp.call_rwsem_wake.up_read.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +7.9 7.90 ± 3% perf-profile.calltrace.cycles-pp.up_read.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +8.0 8.00 ± 4% perf-profile.calltrace.cycles-pp.__sched_text_start.schedule.rwsem_down_write_failed_killable.call_rwsem_down_write_failed_killable.down_write_killable 0.00 +8.2 8.22 ± 4% perf-profile.calltrace.cycles-pp.schedule.rwsem_down_write_failed_killable.call_rwsem_down_write_failed_killable.down_write_killable.__x64_sys_brk 0.83 ± 27% +25.9 26.75 ± 11% perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary 1.09 ± 32% +30.9 31.97 ± 10% perf-profile.calltrace.cycles-pp.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 1.62 ± 36% +44.4 46.01 ± 9% perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 1.63 ± 36% +44.5 46.18 ± 9% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64 1.63 ± 36% +44.6 46.21 ± 9% perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64 1.73 ± 29% +51.1 52.86 ± 2% perf-profile.calltrace.cycles-pp.secondary_startup_64 82.10 -72.2 9.91 ± 6% perf-profile.children.cycles-pp.down_write_killable 81.23 -72.0 9.20 ± 5% perf-profile.children.cycles-pp.call_rwsem_down_write_failed_killable 81.20 -72.0 9.18 ± 5% perf-profile.children.cycles-pp.rwsem_down_write_failed_killable 68.78 -68.8 0.01 ±173% perf-profile.children.cycles-pp.osq_lock 94.15 -54.6 39.58 ± 2% perf-profile.children.cycles-pp.__x64_sys_brk 94.59 -54.3 40.28 ± 3% perf-profile.children.cycles-pp.do_syscall_64 94.74 -54.3 40.48 ± 3% perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 10.16 ± 3% -9.8 0.38 ± 61% perf-profile.children.cycles-pp.rwsem_spin_on_owner 1.25 ± 11% -0.5 0.78 ± 5% perf-profile.children.cycles-pp.find_vma 0.89 ± 10% -0.2 0.67 ± 7% perf-profile.children.cycles-pp.anon_vma_clone 0.27 ± 31% -0.1 0.12 ± 5% perf-profile.children.cycles-pp.tlb_gather_mmu 0.07 ± 7% +0.0 0.10 ± 12% perf-profile.children.cycles-pp.cap_mmap_addr 0.03 ±100% +0.0 0.07 ± 11% perf-profile.children.cycles-pp.tlb_flush_mmu_free 0.00 +0.1 0.05 perf-profile.children.cycles-pp.irq_work_run_list 0.08 ± 25% +0.1 0.14 ± 13% perf-profile.children.cycles-pp.arch_tlb_finish_mmu 0.01 ±173% +0.1 0.07 ± 12% perf-profile.children.cycles-pp.cap_capable 0.07 ± 12% +0.1 0.13 ± 23% perf-profile.children.cycles-pp.selinux_mmap_addr 0.04 ± 60% +0.1 0.10 ± 27% perf-profile.children.cycles-pp.free_pgd_range 0.00 +0.1 0.06 ± 13% perf-profile.children.cycles-pp.strlen 0.00 +0.1 0.07 ± 16% perf-profile.children.cycles-pp.sched_idle_set_state 0.00 +0.1 0.07 ± 33% perf-profile.children.cycles-pp.__list_add_valid 0.03 ±102% +0.1 0.10 ± 14% perf-profile.children.cycles-pp.__vm_enough_memory 0.00 +0.1 0.08 ± 24% perf-profile.children.cycles-pp.perf_mux_hrtimer_handler 0.00 +0.1 0.08 ± 30% perf-profile.children.cycles-pp.rcu_note_context_switch 0.00 +0.1 0.08 ± 14% perf-profile.children.cycles-pp.tsc_verify_tsc_adjust 0.00 +0.1 0.08 ± 15% perf-profile.children.cycles-pp.lapic_next_deadline 0.00 +0.1 0.08 ± 15% perf-profile.children.cycles-pp.__enqueue_entity 0.00 +0.1 0.08 ± 26% perf-profile.children.cycles-pp.perf_exclude_event 0.04 ± 58% +0.1 0.12 ± 31% perf-profile.children.cycles-pp.lru_add_drain_cpu 0.00 +0.1 0.08 ± 27% perf-profile.children.cycles-pp.in_sched_functions 0.09 ± 20% +0.1 0.18 ± 26% perf-profile.children.cycles-pp.tick_sched_handle 0.09 ± 21% +0.1 0.17 ± 26% perf-profile.children.cycles-pp.update_process_times 0.00 +0.1 0.09 ± 16% perf-profile.children.cycles-pp.tick_check_broadcast_expired 0.00 +0.1 0.09 ± 16% perf-profile.children.cycles-pp.native_irq_return_iret 0.23 ± 15% +0.1 0.32 ± 13% perf-profile.children.cycles-pp.remove_vma 0.00 +0.1 0.09 ± 23% perf-profile.children.cycles-pp.get_cpu_device 0.00 +0.1 0.09 ± 13% perf-profile.children.cycles-pp.vma_adjust_trans_huge 0.00 +0.1 0.09 ± 13% perf-profile.children.cycles-pp.rb_insert_color_cached 0.00 +0.1 0.09 ± 15% perf-profile.children.cycles-pp.arch_cpu_idle_enter 0.00 +0.1 0.09 ± 17% perf-profile.children.cycles-pp.hugepage_vma_check 0.00 +0.1 0.09 ± 20% perf-profile.children.cycles-pp.put_prev_task_idle 0.10 ± 15% +0.1 0.19 ± 13% perf-profile.children.cycles-pp.__vma_link_rb 0.00 +0.1 0.10 ± 15% perf-profile.children.cycles-pp.userfaultfd_unmap_prep 0.10 ± 19% +0.1 0.20 ± 21% perf-profile.children.cycles-pp.__rb_insert_augmented 0.00 +0.1 0.10 ± 12% perf-profile.children.cycles-pp.clear_buddies 0.16 ± 14% +0.1 0.27 ± 22% perf-profile.children.cycles-pp.arch_get_unmapped_area_topdown 0.03 ±100% +0.1 0.13 ± 5% perf-profile.children.cycles-pp.khugepaged_enter_vma_merge 0.13 ± 19% +0.1 0.23 ± 13% perf-profile.children.cycles-pp.tlb_finish_mmu 0.00 +0.1 0.10 ± 28% perf-profile.children.cycles-pp.pm_qos_request 0.00 +0.1 0.10 ± 34% perf-profile.children.cycles-pp.stack_access_ok 0.00 +0.1 0.11 ± 37% perf-profile.children.cycles-pp.perf_swevent_event 0.17 ± 27% +0.1 0.28 ± 7% perf-profile.children.cycles-pp.avc_has_perm_noaudit 0.00 +0.1 0.11 ± 11% perf-profile.children.cycles-pp.irq_work_needs_cpu 0.00 +0.1 0.11 ± 17% perf-profile.children.cycles-pp.reschedule_interrupt 0.00 +0.1 0.11 ± 19% perf-profile.children.cycles-pp.clockevents_program_event 0.00 +0.1 0.11 ± 42% perf-profile.children.cycles-pp.tick_nohz_tick_stopped 0.10 ± 15% +0.1 0.22 ± 24% perf-profile.children.cycles-pp.tick_sched_timer 0.00 +0.1 0.12 ± 33% perf-profile.children.cycles-pp.can_stop_idle_tick 0.53 ± 4% +0.1 0.66 ± 9% perf-profile.children.cycles-pp.vma_compute_subtree_gap 0.00 +0.1 0.12 ± 13% perf-profile.children.cycles-pp.native_load_tls 0.00 +0.1 0.13 ± 33% perf-profile.children.cycles-pp.load_new_mm_cr3 0.07 ± 23% +0.1 0.20 ± 10% perf-profile.children.cycles-pp.cap_vm_enough_memory 0.00 +0.1 0.14 ± 19% perf-profile.children.cycles-pp.__update_idle_core 0.00 +0.1 0.14 ± 15% perf-profile.children.cycles-pp.update_min_vruntime 0.00 +0.1 0.14 ± 26% perf-profile.children.cycles-pp.leave_mm 0.33 ± 6% +0.1 0.47 ± 14% perf-profile.children.cycles-pp.___might_sleep 0.00 +0.2 0.15 ± 24% perf-profile.children.cycles-pp.ttwu_stat 0.09 ± 20% +0.2 0.24 ± 13% perf-profile.children.cycles-pp.perf_event_mmap_output 0.14 ± 9% +0.2 0.30 ± 20% perf-profile.children.cycles-pp.strlcpy 0.01 ±173% +0.2 0.18 ± 31% perf-profile.children.cycles-pp.__softirqentry_text_start 0.00 +0.2 0.17 ± 25% perf-profile.children.cycles-pp.deactivate_task 0.00 +0.2 0.18 ± 12% perf-profile.children.cycles-pp.orc_find 0.00 +0.2 0.18 ± 14% perf-profile.children.cycles-pp.sched_ttwu_pending 0.24 ± 14% +0.2 0.42 ± 7% perf-profile.children.cycles-pp.security_mmap_addr 0.00 +0.2 0.18 ± 11% perf-profile.children.cycles-pp.rcu_eqs_exit 0.00 +0.2 0.19 ± 15% perf-profile.children.cycles-pp.rcu_eqs_enter 0.20 ± 10% +0.2 0.40 ± 14% perf-profile.children.cycles-pp.__might_sleep 0.07 ± 21% +0.2 0.27 ± 18% perf-profile.children.cycles-pp.__vma_rb_erase 0.00 +0.2 0.20 ± 22% perf-profile.children.cycles-pp.rb_next 0.00 +0.2 0.20 ± 20% perf-profile.children.cycles-pp.__list_del_entry_valid 0.00 +0.2 0.20 ± 22% perf-profile.children.cycles-pp.save_stack_address 0.22 ± 19% +0.2 0.43 ± 9% perf-profile.children.cycles-pp.cred_has_capability 0.00 +0.2 0.22 ± 25% perf-profile.children.cycles-pp.__orc_find 0.00 +0.2 0.23 ± 14% perf-profile.children.cycles-pp.kernel_text_address 0.03 ±100% +0.2 0.25 ± 24% perf-profile.children.cycles-pp.irq_exit 0.00 +0.2 0.23 ± 27% perf-profile.children.cycles-pp.__rwsem_mark_wake 0.00 +0.2 0.24 ± 22% perf-profile.children.cycles-pp.nr_iowait_cpu 0.00 +0.2 0.25 ± 12% perf-profile.children.cycles-pp.call_cpuidle 0.24 ± 13% +0.3 0.50 ± 9% perf-profile.children.cycles-pp.perf_iterate_sb 0.38 ± 13% +0.3 0.63 ± 14% perf-profile.children.cycles-pp.vm_area_dup 0.32 ± 7% +0.3 0.57 ± 9% perf-profile.children.cycles-pp.kmem_cache_alloc 0.00 +0.3 0.26 ± 8% perf-profile.children.cycles-pp.put_prev_entity 0.16 ± 12% +0.3 0.42 ± 11% perf-profile.children.cycles-pp.__hrtimer_run_queues 0.00 +0.3 0.27 ± 24% perf-profile.children.cycles-pp.menu_reflect 0.00 +0.3 0.27 ± 14% perf-profile.children.cycles-pp.activate_task 0.00 +0.3 0.27 ± 23% perf-profile.children.cycles-pp.__hrtimer_next_event_base 0.00 +0.3 0.27 ± 14% perf-profile.children.cycles-pp.account_entity_dequeue 0.00 +0.3 0.28 ± 18% perf-profile.children.cycles-pp.__kernel_text_address 0.00 +0.3 0.28 ± 8% perf-profile.children.cycles-pp.get_iowait_load 0.27 ± 13% +0.3 0.56 ± 12% perf-profile.children.cycles-pp.selinux_vm_enough_memory 0.41 ± 2% +0.3 0.70 ± 9% perf-profile.children.cycles-pp.unlink_anon_vmas 0.00 +0.3 0.31 ± 13% perf-profile.children.cycles-pp.pick_next_entity 0.00 +0.3 0.31 ± 4% perf-profile.children.cycles-pp.rb_erase_cached 0.00 +0.3 0.32 ± 13% perf-profile.children.cycles-pp.cpuidle_governor_latency_req 0.00 +0.3 0.32 ± 13% perf-profile.children.cycles-pp.account_entity_enqueue 0.00 +0.3 0.33 ± 8% perf-profile.children.cycles-pp.available_idle_cpu 0.00 +0.3 0.34 ± 14% perf-profile.children.cycles-pp.update_ts_time_stats 0.00 +0.3 0.34 ± 12% perf-profile.children.cycles-pp.unwind_get_return_address 0.00 +0.3 0.35 ± 20% perf-profile.children.cycles-pp.rwsem_downgrade_wake 0.45 ± 3% +0.4 0.80 ± 11% perf-profile.children.cycles-pp.free_pgtables 0.00 +0.4 0.37 ± 8% perf-profile.children.cycles-pp.__calc_delta 0.00 +0.4 0.37 ± 24% perf-profile.children.cycles-pp.call_rwsem_downgrade_wake 0.00 +0.4 0.38 ± 8% perf-profile.children.cycles-pp.select_idle_sibling 0.68 ± 6% +0.4 1.06 ± 7% perf-profile.children.cycles-pp.unmap_page_range 0.00 +0.4 0.39 ± 7% perf-profile.children.cycles-pp.put_prev_task_fair 0.22 ± 8% +0.4 0.62 ± 8% perf-profile.children.cycles-pp.hrtimer_interrupt 0.00 +0.4 0.41 ± 2% perf-profile.children.cycles-pp.rcu_idle_exit 0.50 ± 11% +0.4 0.91 ± 6% perf-profile.children.cycles-pp.get_unmapped_area 0.00 +0.4 0.42 ± 3% perf-profile.children.cycles-pp.hrtimer_get_next_event 0.36 ± 11% +0.4 0.79 ± 9% perf-profile.children.cycles-pp.security_vm_enough_memory_mm 0.75 ± 6% +0.4 1.19 ± 8% perf-profile.children.cycles-pp.unmap_vmas 1.42 ± 7% +0.4 1.86 ± 5% perf-profile.children.cycles-pp.vma_merge 0.00 +0.5 0.46 ± 15% perf-profile.children.cycles-pp.__unwind_start 0.00 +0.5 0.46 ± 32% perf-profile.children.cycles-pp.resched_curr 0.12 ± 8% +0.5 0.62 ± 12% perf-profile.children.cycles-pp.__indirect_thunk_start 0.01 ±173% +0.5 0.53 ± 14% perf-profile.children.cycles-pp.read_tsc 0.00 +0.5 0.52 ± 23% perf-profile.children.cycles-pp.downgrade_write 0.06 ± 62% +0.5 0.58 ± 12% perf-profile.children.cycles-pp.wake_q_add 0.44 ± 26% +0.6 1.00 ± 25% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath 0.00 +0.6 0.62 ± 13% perf-profile.children.cycles-pp.reweight_entity 0.04 ±106% +0.6 0.67 ± 6% perf-profile.children.cycles-pp.native_write_msr 0.00 +0.6 0.63 ± 13% perf-profile.children.cycles-pp.hrtimer_next_event_without 0.00 +0.6 0.64 ± 6% perf-profile.children.cycles-pp.___perf_sw_event 0.00 +0.7 0.68 ± 7% perf-profile.children.cycles-pp.pick_next_task_idle 0.28 ± 9% +0.7 0.96 ± 10% perf-profile.children.cycles-pp.smp_apic_timer_interrupt 0.04 ±100% +0.7 0.72 ± 10% perf-profile.children.cycles-pp.__task_rq_lock 0.02 ±173% +0.7 0.71 ± 9% perf-profile.children.cycles-pp.switch_mm_irqs_off 0.00 +0.7 0.70 ± 10% perf-profile.children.cycles-pp.update_rq_clock 0.00 +0.7 0.72 ± 6% perf-profile.children.cycles-pp.__update_load_avg_se 0.68 ± 6% +0.7 1.40 ± 9% perf-profile.children.cycles-pp.perf_event_mmap 0.00 +0.7 0.74 ± 12% perf-profile.children.cycles-pp.tick_nohz_idle_enter 0.29 ± 8% +0.7 1.03 ± 10% perf-profile.children.cycles-pp.apic_timer_interrupt 0.01 ±173% +0.7 0.76 ± 6% perf-profile.children.cycles-pp.finish_task_switch 0.01 ±173% +0.8 0.81 ± 4% perf-profile.children.cycles-pp.__update_load_avg_cfs_rq 0.03 ±100% +0.8 0.84 ± 11% perf-profile.children.cycles-pp.ktime_get 0.02 ±173% +0.8 0.83 ± 21% perf-profile.children.cycles-pp.check_preempt_curr 0.01 ±173% +0.8 0.83 ± 12% perf-profile.children.cycles-pp.tick_nohz_idle_exit 0.03 ±105% +0.9 0.88 ± 2% perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore 0.02 ±173% +0.9 0.92 ± 20% perf-profile.children.cycles-pp.ttwu_do_wakeup 0.46 ± 26% +0.9 1.36 ± 20% perf-profile.children.cycles-pp._raw_spin_lock_irqsave 1.75 ± 10% +0.9 2.67 ± 5% perf-profile.children.cycles-pp.unmap_region 0.01 ±173% +0.9 0.95 ± 11% perf-profile.children.cycles-pp.find_next_bit 0.01 ±173% +1.0 0.99 ± 7% perf-profile.children.cycles-pp.update_cfs_group 0.03 ±105% +1.0 1.04 ± 8% perf-profile.children.cycles-pp.__switch_to_asm 0.04 ± 57% +1.0 1.07 ± 10% perf-profile.children.cycles-pp.update_curr 0.03 ±100% +1.2 1.24 ± 4% perf-profile.children.cycles-pp.select_task_rq_fair 0.01 ±173% +1.2 1.23 ± 6% perf-profile.children.cycles-pp.__switch_to 0.28 ± 12% +1.3 1.55 ± 10% perf-profile.children.cycles-pp._raw_spin_lock 0.01 ±173% +1.3 1.34 ± 13% perf-profile.children.cycles-pp.native_sched_clock 0.02 ±173% +1.4 1.37 ± 12% perf-profile.children.cycles-pp.sched_clock 0.00 +1.4 1.36 ± 12% perf-profile.children.cycles-pp.unwind_next_frame 0.04 ± 63% +1.4 1.49 ± 9% perf-profile.children.cycles-pp.sched_clock_cpu 0.03 ±100% +1.5 1.48 ± 10% perf-profile.children.cycles-pp.__next_timer_interrupt 0.08 ± 38% +1.7 1.77 ± 5% perf-profile.children.cycles-pp.set_next_entity 5.79 ± 4% +1.9 7.71 ± 5% perf-profile.children.cycles-pp.__do_munmap 0.00 +2.1 2.09 ± 9% perf-profile.children.cycles-pp.__save_stack_trace 3.38 ± 5% +2.1 5.47 ± 4% perf-profile.children.cycles-pp.do_brk_flags 0.00 +2.1 2.13 ± 9% perf-profile.children.cycles-pp.save_stack_trace_tsk 0.05 ± 61% +2.2 2.22 ± 7% perf-profile.children.cycles-pp.get_next_timer_interrupt 0.01 ±173% +2.5 2.53 ± 8% perf-profile.children.cycles-pp.__account_scheduler_latency 0.11 ± 47% +2.5 2.65 ± 2% perf-profile.children.cycles-pp.update_load_avg 0.06 ± 60% +2.6 2.66 ± 7% perf-profile.children.cycles-pp.tick_nohz_next_event 0.15 ± 42% +3.2 3.33 ± 6% perf-profile.children.cycles-pp.pick_next_task_fair 0.09 ± 31% +3.4 3.51 ± 7% perf-profile.children.cycles-pp.tick_nohz_get_sleep_length 0.14 ± 35% +3.5 3.62 ± 3% perf-profile.children.cycles-pp.dequeue_entity 0.16 ± 36% +4.0 4.12 ± 2% perf-profile.children.cycles-pp.dequeue_task_fair 0.24 ± 44% +4.1 4.30 ± 5% perf-profile.children.cycles-pp.poll_idle 0.24 ± 50% +5.3 5.54 ± 4% perf-profile.children.cycles-pp.schedule_idle 2.34 ± 9% +5.6 7.90 ± 4% perf-profile.children.cycles-pp.up_write 0.19 ± 35% +5.8 5.99 ± 6% perf-profile.children.cycles-pp.menu_select 0.20 ± 33% +6.1 6.30 ± 2% perf-profile.children.cycles-pp.enqueue_entity 0.22 ± 32% +6.7 6.96 ± 2% perf-profile.children.cycles-pp.enqueue_task_fair 0.24 ± 29% +7.1 7.35 ± 2% perf-profile.children.cycles-pp.ttwu_do_activate 0.00 +7.9 7.91 ± 3% perf-profile.children.cycles-pp.up_read 0.32 ± 37% +7.9 8.23 ± 4% perf-profile.children.cycles-pp.schedule 0.91 ± 15% +12.5 13.40 ± 3% perf-profile.children.cycles-pp.try_to_wake_up 0.95 ± 15% +12.9 13.85 ± 3% perf-profile.children.cycles-pp.wake_up_q 0.55 ± 43% +13.0 13.52 ± 4% perf-profile.children.cycles-pp.__sched_text_start 1.15 ± 17% +14.0 15.11 ± 3% perf-profile.children.cycles-pp.rwsem_wake 1.15 ± 17% +14.0 15.15 ± 3% perf-profile.children.cycles-pp.call_rwsem_wake 0.88 ± 20% +29.8 30.72 ± 5% perf-profile.children.cycles-pp.intel_idle 1.16 ± 24% +35.6 36.74 ± 4% perf-profile.children.cycles-pp.cpuidle_enter_state 1.63 ± 36% +44.6 46.21 ± 9% perf-profile.children.cycles-pp.start_secondary 1.74 ± 29% +51.1 52.81 ± 2% perf-profile.children.cycles-pp.do_idle 1.73 ± 29% +51.1 52.86 ± 2% perf-profile.children.cycles-pp.secondary_startup_64 1.73 ± 29% +51.1 52.86 ± 2% perf-profile.children.cycles-pp.cpu_startup_entry 68.56 -68.5 0.01 ±173% perf-profile.self.cycles-pp.osq_lock 10.12 ± 4% -9.7 0.38 ± 61% perf-profile.self.cycles-pp.rwsem_spin_on_owner 1.41 ± 7% -0.9 0.51 ± 17% perf-profile.self.cycles-pp.rwsem_down_write_failed_killable 1.16 ± 4% -0.6 0.52 ± 12% perf-profile.self.cycles-pp.up_write 1.02 ± 14% -0.5 0.48 ± 9% perf-profile.self.cycles-pp.find_vma 1.16 ± 5% -0.2 0.94 ± 2% perf-profile.self.cycles-pp.__vma_adjust 0.38 ± 10% -0.2 0.20 ± 17% perf-profile.self.cycles-pp.anon_vma_clone 0.26 ± 31% -0.1 0.12 ± 5% perf-profile.self.cycles-pp.tlb_gather_mmu 0.06 ± 15% +0.0 0.09 ± 15% perf-profile.self.cycles-pp.cap_mmap_addr 0.06 +0.0 0.10 ± 8% perf-profile.self.cycles-pp.__split_vma 0.01 ±173% +0.0 0.06 ± 14% perf-profile.self.cycles-pp.remove_vma 0.04 ± 58% +0.1 0.09 ± 19% perf-profile.self.cycles-pp.tlb_finish_mmu 0.00 +0.1 0.05 ± 9% perf-profile.self.cycles-pp.strlen 0.00 +0.1 0.06 ± 11% perf-profile.self.cycles-pp.unwind_get_return_address 0.04 ± 60% +0.1 0.10 ± 27% perf-profile.self.cycles-pp.free_pgd_range 0.00 +0.1 0.06 ± 13% perf-profile.self.cycles-pp.cap_capable 0.00 +0.1 0.06 ± 34% perf-profile.self.cycles-pp.__list_add_valid 0.04 ± 58% +0.1 0.11 ± 28% perf-profile.self.cycles-pp.lru_add_drain_cpu 0.00 +0.1 0.07 ± 14% perf-profile.self.cycles-pp.tsc_verify_tsc_adjust 0.00 +0.1 0.07 ± 22% perf-profile.self.cycles-pp.kernel_text_address 0.00 +0.1 0.07 ± 34% perf-profile.self.cycles-pp.put_prev_task_idle 0.00 +0.1 0.07 ± 17% perf-profile.self.cycles-pp.hugepage_vma_check 0.00 +0.1 0.08 ± 30% perf-profile.self.cycles-pp.rcu_note_context_switch 0.00 +0.1 0.08 ± 24% perf-profile.self.cycles-pp.__save_stack_trace 0.00 +0.1 0.08 ± 16% perf-profile.self.cycles-pp.clear_buddies 0.00 +0.1 0.08 ± 14% perf-profile.self.cycles-pp.__enqueue_entity 0.10 ± 31% +0.1 0.17 ± 13% perf-profile.self.cycles-pp.security_mmap_addr 0.04 ± 58% +0.1 0.12 ± 32% perf-profile.self.cycles-pp.selinux_vm_enough_memory 0.00 +0.1 0.08 ± 34% perf-profile.self.cycles-pp.free_pgtables 0.09 ± 13% +0.1 0.17 ± 18% perf-profile.self.cycles-pp.unlink_anon_vmas 0.00 +0.1 0.08 ± 10% perf-profile.self.cycles-pp.rb_insert_color_cached 0.00 +0.1 0.08 ± 31% perf-profile.self.cycles-pp.get_cpu_device 0.04 ± 58% +0.1 0.12 ± 22% perf-profile.self.cycles-pp.selinux_mmap_addr 0.00 +0.1 0.08 ± 10% perf-profile.self.cycles-pp.vma_adjust_trans_huge 0.00 +0.1 0.08 ± 15% perf-profile.self.cycles-pp.tick_check_broadcast_expired 0.05 ± 8% +0.1 0.14 ± 33% perf-profile.self.cycles-pp.userfaultfd_unmap_complete 0.00 +0.1 0.09 ± 17% perf-profile.self.cycles-pp.__vma_link_rb 0.00 +0.1 0.09 ± 16% perf-profile.self.cycles-pp.native_irq_return_iret 0.00 +0.1 0.09 ± 12% perf-profile.self.cycles-pp.ttwu_do_wakeup 0.00 +0.1 0.09 ± 13% perf-profile.self.cycles-pp.irq_work_needs_cpu 0.00 +0.1 0.09 ± 8% perf-profile.self.cycles-pp.update_ts_time_stats 0.00 +0.1 0.09 ± 32% perf-profile.self.cycles-pp.tick_nohz_tick_stopped 0.00 +0.1 0.09 ± 36% perf-profile.self.cycles-pp.stack_access_ok 0.00 +0.1 0.10 ± 18% perf-profile.self.cycles-pp.userfaultfd_unmap_prep 0.00 +0.1 0.10 ± 11% perf-profile.self.cycles-pp.__unwind_start 0.00 +0.1 0.10 ± 29% perf-profile.self.cycles-pp.pm_qos_request 0.50 ± 4% +0.1 0.60 ± 12% perf-profile.self.cycles-pp.vma_compute_subtree_gap 0.15 ± 12% +0.1 0.25 ± 9% perf-profile.self.cycles-pp.perf_iterate_sb 0.03 ±100% +0.1 0.12 ± 22% perf-profile.self.cycles-pp.rwsem_wake 0.00 +0.1 0.10 ± 23% perf-profile.self.cycles-pp.ttwu_do_activate 0.09 ± 17% +0.1 0.20 ± 22% perf-profile.self.cycles-pp.__rb_insert_augmented 0.00 +0.1 0.10 ± 17% perf-profile.self.cycles-pp.save_stack_address 0.00 +0.1 0.10 ± 8% perf-profile.self.cycles-pp.hrtimer_next_event_without 0.00 +0.1 0.10 ± 8% perf-profile.self.cycles-pp.tick_nohz_idle_exit 0.17 ± 28% +0.1 0.27 ± 9% perf-profile.self.cycles-pp.avc_has_perm_noaudit 0.01 ±173% +0.1 0.12 ± 15% perf-profile.self.cycles-pp.cap_vm_enough_memory 0.00 +0.1 0.11 ± 31% perf-profile.self.cycles-pp.sched_clock_cpu 0.09 ± 19% +0.1 0.20 ± 21% perf-profile.self.cycles-pp.arch_get_unmapped_area_topdown 0.00 +0.1 0.12 ± 33% perf-profile.self.cycles-pp.tick_nohz_get_sleep_length 0.00 +0.1 0.12 ± 10% perf-profile.self.cycles-pp.native_load_tls 0.00 +0.1 0.12 ± 33% perf-profile.self.cycles-pp.can_stop_idle_tick 0.00 +0.1 0.12 ± 15% perf-profile.self.cycles-pp.up_read 0.00 +0.1 0.13 ± 18% perf-profile.self.cycles-pp.__update_idle_core 0.00 +0.1 0.13 ± 33% perf-profile.self.cycles-pp.load_new_mm_cr3 0.00 +0.1 0.13 ± 12% perf-profile.self.cycles-pp.update_min_vruntime 0.32 ± 7% +0.1 0.45 ± 13% perf-profile.self.cycles-pp.___might_sleep 0.03 ±100% +0.1 0.16 ± 13% perf-profile.self.cycles-pp.cred_has_capability 0.11 ± 21% +0.1 0.24 ± 14% perf-profile.self.cycles-pp.get_unmapped_area 0.00 +0.1 0.14 ± 19% perf-profile.self.cycles-pp.put_prev_task_fair 0.00 +0.1 0.14 ± 30% perf-profile.self.cycles-pp.deactivate_task 0.00 +0.1 0.14 ± 46% perf-profile.self.cycles-pp.downgrade_write 0.09 ± 20% +0.1 0.23 ± 16% perf-profile.self.cycles-pp.perf_event_mmap_output 0.00 +0.1 0.15 ± 19% perf-profile.self.cycles-pp.pick_next_task_idle 0.00 +0.1 0.15 ± 13% perf-profile.self.cycles-pp.schedule_idle 0.00 +0.2 0.15 ± 24% perf-profile.self.cycles-pp.ttwu_stat 0.00 +0.2 0.15 ± 24% perf-profile.self.cycles-pp.cpu_startup_entry 0.01 ±173% +0.2 0.17 ± 28% perf-profile.self.cycles-pp.strlcpy 0.00 +0.2 0.16 ± 18% perf-profile.self.cycles-pp.schedule 0.18 ± 8% +0.2 0.34 ± 13% perf-profile.self.cycles-pp.__might_sleep 0.00 +0.2 0.16 ± 26% perf-profile.self.cycles-pp.rb_next 0.24 ± 6% +0.2 0.41 ± 11% perf-profile.self.cycles-pp.kmem_cache_alloc 0.18 ± 27% +0.2 0.35 ± 8% perf-profile.self.cycles-pp.vma_merge 0.00 +0.2 0.18 ± 12% perf-profile.self.cycles-pp.sched_ttwu_pending 0.00 +0.2 0.18 ± 22% perf-profile.self.cycles-pp.rcu_eqs_enter 0.00 +0.2 0.18 ± 12% perf-profile.self.cycles-pp.orc_find 0.00 +0.2 0.18 ± 18% perf-profile.self.cycles-pp.__hrtimer_next_event_base 0.00 +0.2 0.18 ± 12% perf-profile.self.cycles-pp.rcu_eqs_exit 0.00 +0.2 0.19 ± 18% perf-profile.self.cycles-pp.__list_del_entry_valid 0.01 ±173% +0.2 0.21 ± 20% perf-profile.self.cycles-pp.__vma_rb_erase 0.00 +0.2 0.21 ± 27% perf-profile.self.cycles-pp.get_next_timer_interrupt 0.00 +0.2 0.22 ± 13% perf-profile.self.cycles-pp.rcu_idle_exit 0.00 +0.2 0.22 ± 25% perf-profile.self.cycles-pp.__orc_find 0.00 +0.2 0.22 ± 21% perf-profile.self.cycles-pp.update_rq_clock 0.00 +0.2 0.22 ± 28% perf-profile.self.cycles-pp.menu_reflect 0.00 +0.2 0.23 ± 27% perf-profile.self.cycles-pp.__rwsem_mark_wake 0.00 +0.2 0.23 ± 21% perf-profile.self.cycles-pp.nr_iowait_cpu 0.00 +0.2 0.24 ± 13% perf-profile.self.cycles-pp.account_entity_dequeue 0.00 +0.2 0.24 ± 3% perf-profile.self.cycles-pp.tick_nohz_next_event 0.00 +0.2 0.24 ± 10% perf-profile.self.cycles-pp.call_cpuidle 0.25 ± 5% +0.2 0.49 ± 9% perf-profile.self.cycles-pp.perf_event_mmap 0.00 +0.2 0.25 ± 5% perf-profile.self.cycles-pp.rb_erase_cached 0.00 +0.2 0.25 ± 16% perf-profile.self.cycles-pp.pick_next_entity 0.38 ± 9% +0.2 0.63 ± 7% perf-profile.self.cycles-pp.__x64_sys_brk 0.00 +0.2 0.25 ± 7% perf-profile.self.cycles-pp.put_prev_entity 0.00 +0.3 0.27 ± 14% perf-profile.self.cycles-pp.activate_task 0.00 +0.3 0.28 ± 8% perf-profile.self.cycles-pp.get_iowait_load 0.24 ± 7% +0.3 0.52 ± 13% perf-profile.self.cycles-pp.__do_munmap 0.00 +0.3 0.28 ± 5% perf-profile.self.cycles-pp.cpuidle_enter_state 0.00 +0.3 0.29 ± 14% perf-profile.self.cycles-pp.account_entity_enqueue 0.00 +0.3 0.29 ± 7% perf-profile.self.cycles-pp.ktime_get 0.00 +0.3 0.33 ± 12% perf-profile.self.cycles-pp.check_preempt_curr 0.00 +0.3 0.33 ± 7% perf-profile.self.cycles-pp.available_idle_cpu 0.00 +0.3 0.33 ± 8% perf-profile.self.cycles-pp.__account_scheduler_latency 0.00 +0.3 0.35 ± 4% perf-profile.self.cycles-pp.__calc_delta 0.37 ± 5% +0.4 0.73 ± 6% perf-profile.self.cycles-pp.unmap_page_range 0.01 ±173% +0.4 0.45 ± 3% perf-profile.self.cycles-pp.wake_up_q 0.00 +0.4 0.44 ± 15% perf-profile.self.cycles-pp.dequeue_task_fair 0.12 ± 13% +0.4 0.56 ± 12% perf-profile.self.cycles-pp.__indirect_thunk_start 0.00 +0.5 0.46 ± 32% perf-profile.self.cycles-pp.resched_curr 0.00 +0.5 0.48 ± 10% perf-profile.self.cycles-pp.___perf_sw_event 0.01 ±173% +0.5 0.51 ± 14% perf-profile.self.cycles-pp.read_tsc 0.06 ± 62% +0.5 0.58 ± 12% perf-profile.self.cycles-pp.wake_q_add 0.44 ± 26% +0.6 0.99 ± 24% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath 0.02 ±173% +0.6 0.58 ± 13% perf-profile.self.cycles-pp.switch_mm_irqs_off 0.01 ±173% +0.6 0.59 ± 17% perf-profile.self.cycles-pp.update_curr 0.00 +0.6 0.59 ± 17% perf-profile.self.cycles-pp.dequeue_entity 0.04 ±106% +0.6 0.66 ± 6% perf-profile.self.cycles-pp.native_write_msr 0.00 +0.6 0.62 ± 13% perf-profile.self.cycles-pp.reweight_entity 0.00 +0.6 0.65 ± 13% perf-profile.self.cycles-pp.__next_timer_interrupt 0.23 ± 11% +0.7 0.89 ± 13% perf-profile.self.cycles-pp._raw_spin_lock 0.00 +0.7 0.66 ± 10% perf-profile.self.cycles-pp.enqueue_task_fair 0.01 ±173% +0.7 0.69 ± 4% perf-profile.self.cycles-pp.finish_task_switch 0.00 +0.7 0.69 ± 8% perf-profile.self.cycles-pp.__update_load_avg_se 0.02 ±173% +0.8 0.80 ± 2% perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore 0.01 ±173% +0.8 0.80 ± 5% perf-profile.self.cycles-pp.__update_load_avg_cfs_rq 0.00 +0.8 0.78 ± 5% perf-profile.self.cycles-pp.select_task_rq_fair 0.00 +0.8 0.80 ± 11% perf-profile.self.cycles-pp.unwind_next_frame 0.00 +0.8 0.83 ± 9% perf-profile.self.cycles-pp.find_next_bit 0.07 ± 17% +0.9 0.97 ± 9% perf-profile.self.cycles-pp._raw_spin_lock_irqsave 0.01 ±173% +0.9 0.96 ± 7% perf-profile.self.cycles-pp.update_cfs_group 0.03 ±105% +1.0 0.98 ± 8% perf-profile.self.cycles-pp.set_next_entity 0.02 ±173% +1.0 1.01 ± 7% perf-profile.self.cycles-pp.pick_next_task_fair 0.03 ±105% +1.0 1.04 ± 8% perf-profile.self.cycles-pp.__switch_to_asm 0.04 ±103% +1.1 1.10 ± 9% perf-profile.self.cycles-pp.update_load_avg 0.01 ±173% +1.2 1.18 ± 7% perf-profile.self.cycles-pp.do_idle 0.01 ±173% +1.2 1.18 ± 5% perf-profile.self.cycles-pp.__switch_to 0.04 ±107% +1.2 1.28 ± 7% perf-profile.self.cycles-pp.enqueue_entity 0.01 ±173% +1.3 1.31 ± 14% perf-profile.self.cycles-pp.native_sched_clock 0.07 ± 28% +1.5 1.60 ± 6% perf-profile.self.cycles-pp.try_to_wake_up 0.08 ± 33% +1.7 1.81 ± 9% perf-profile.self.cycles-pp.menu_select 0.10 ± 43% +2.2 2.32 ± 9% perf-profile.self.cycles-pp.__sched_text_start 0.22 ± 44% +3.8 4.05 ± 6% perf-profile.self.cycles-pp.poll_idle 0.88 ± 20% +29.7 30.58 ± 5% perf-profile.self.cycles-pp.intel_idle will-it-scale.per_thread_ops 220000 +-+----------------------------------------------------------------+ |. + + + +. + + +. :+ + .+. + + | 200000 +-+ +. + + .+ : + +. + + +. .+. + + .+ + + + | 180000 +-+ + + + .+. : + + +. .+ + + + +| | + + + + | 160000 +-+ | | | 140000 +-+ | | | 120000 +-+ | 100000 +-O | | | 80000 O-+ O O O O | | O O O O O O O O O O O O O O O O O O O | 60000 +-+----------------------------------------------------------------+ will-it-scale.workload 1.8e+06 +-+---------------------------------------------------------------+ | .+ + .+ .+ + .+. .+. | 1.6e+06 +-+ + + + .+ +.+ + .+.+ + .+. + :.+ + + + | | +.+ + + +. + +.+ +.+ +. .+ + + + +| 1.4e+06 +-+ + + + + | | | 1.2e+06 +-+ | | | 1e+06 +-+ | | | 800000 +-O | O O O | 600000 +-+ O O O O OO O O O O O O O O O O O O O | | O O | 400000 +-+---------------------------------------------------------------+ will-it-scale.time.user_time 60 +-+--------------------------------------------------------------------+ | | 55 +-+.+ .+ .+ + .+.. .+. | 50 +-+ + .+.. .+ +.+ + .+..+ + .+. : + .+ + + + | | +.+ + + .+. + +.+ +.+ +. : + + + +| 45 +-+ + + +.+ + | | | 40 +-+ | | | 35 +-+ | 30 +-O | O O O O O O O O | 25 +-+ O O O O O O O O O O O O | | O O O O | 20 +-+--------------------------------------------------------------------+ will-it-scale.time.system_time 2400 +-+------------------------------------------------------------------+ 2200 +-+.+.+.+.+. .+.+.+.+.+.+..+.+.+.+.+.+. .+. | | +.+.+.+.+ +.+ +.+.+.+.+.+.+.+.| 2000 +-+ | 1800 +-+ | | | 1600 +-+ | 1400 +-+ | 1200 +-+ | | | 1000 +-+ | 800 +-+ | | | 600 O-O O O O O O O O O O O O O O O O O O O O O O | 400 +-+---------------------------O----O---------------------------------+ will-it-scale.time.percent_of_cpu_this_job_got 800 +-+-------------------------------------------------------------------+ |.+.+.+.+.+.+.+. .+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+..+.+.+.+. .+.+.+.| 700 +-+ +. + | | | 600 +-+ | | | 500 +-+ | | | 400 +-+ | | | 300 +-+ | | | 200 O-O O O O O O | | O O O O O O O O O O O O O O O O O O | 100 +-+-------------------------------------------------------------------+ will-it-scale.time.voluntary_context_switches 1.6e+08 +-+---------------------------------------------------------------+ | O O O O O | 1.4e+08 +-O O O O O O O | 1.2e+08 O-+ O O OO O O O O | | O O O O | 1e+08 +-+ | | | 8e+07 +-+ | | | 6e+07 +-+ | 4e+07 +-+ + .| | .+. + :.+. .+.+.+.++.+.+.+.+.+.+.+ | 2e+07 +-+. .+.+.+ + + +.+. .+.+.+.+. .+.+.+ | | + + + | 0 +-+---------------------------------------------------------------+ will-it-scale.time.involuntary_context_switches 200000 +-+----------------------------------------------------------------+ 180000 +-+ + .+ : + + .+ + + .+ | | + : : + + : | 160000 +-+ : : : + + | 140000 +-+ + + +.: +.+. + + .+ + + | | + + : : + +.+ +.+.+ : + + | 120000 +-+ + : : : + :| 100000 +-+ + + :| 80000 +-+ | | | 60000 +-+ | 40000 +-+ | | | 20000 +-+ | 0 O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-OO-O-O-O-O-O-O-------------------+ [*] bisect-good sample [O] bisect-bad sample Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Rong Chen

1 year, 12 months

7
9
0 / 0

Test monitoring on custom github repo

by Thomas Garnier

Hi, I am working on KASLR (PIE for x86_64). I previously used Kees (CCed) branches for lkp bot testing but someone told be I could ask you to add a custom github path to monitor all branches on it. I pushed my changes to: https://github.com/thgarnie/linux (kasrl_pie_v2 right now) Can you add it? Anything I need to do? Thanks, -- Thomas

2 years

3
4
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[lkp-robot] [brd] 316ba5736c: aim7.jobs-per-min -11.2% regression

by kernel test robot

Greeting, FYI, we noticed a -11.2% regression of aim7.jobs-per-min due to commit: commit: 316ba5736c9caa5dbcd84085989862d2df57431d ("brd: Mark as non-rotational") https://git.kernel.org/cgit/linux/kernel/git/axboe/linux-block.git for-4.18/block in testcase: aim7 on test machine: 40 threads Intel(R) Xeon(R) CPU E5-2690 v2 @ 3.00GHz with 384G memory with following parameters: disk: 1BRD_48G fs: btrfs test: disk_rw load: 1500 cpufreq_governor: performance test-description: AIM7 is a traditional UNIX system level benchmark suite which is used to test and measure the performance of multiuser system. test-url: https://sourceforge.net/projects/aimbench/files/aim-suite7/ Details are as below: --------------------------------------------------------------------------------------------------> ========================================================================================= compiler/cpufreq_governor/disk/fs/kconfig/load/rootfs/tbox_group/test/testcase: gcc-7/performance/1BRD_48G/btrfs/x86_64-rhel-7.2/1500/debian-x86_64-2016-08-31.cgz/lkp-ivb-ep01/disk_rw/aim7 commit: 522a777566 ("block: consolidate struct request timestamp fields") 316ba5736c ("brd: Mark as non-rotational") 522a777566f56696 316ba5736c9caa5dbcd8408598 ---------------- -------------------------- %stddev %change %stddev \ | \ 28321 -11.2% 25147 aim7.jobs-per-min 318.19 +12.6% 358.23 aim7.time.elapsed_time 318.19 +12.6% 358.23 aim7.time.elapsed_time.max 1437526 ± 2% +14.6% 1646849 ± 2% aim7.time.involuntary_context_switches 11986 +14.2% 13691 aim7.time.system_time 73.06 ± 2% -3.6% 70.43 aim7.time.user_time 2449470 ± 2% -25.0% 1837521 ± 4% aim7.time.voluntary_context_switches 20.25 ± 58% +1681.5% 360.75 ±109% numa-meminfo.node1.Mlocked 456062 -16.3% 381859 softirqs.SCHED 9015 ± 7% -21.3% 7098 ± 22% meminfo.CmaFree 47.50 ± 58% +1355.8% 691.50 ± 92% meminfo.Mlocked 5.24 ± 3% -1.2 3.99 ± 2% mpstat.cpu.idle% 0.61 ± 2% -0.1 0.52 ± 2% mpstat.cpu.usr% 16627 +12.8% 18762 ± 4% slabinfo.Acpi-State.active_objs 16627 +12.9% 18775 ± 4% slabinfo.Acpi-State.num_objs 57.00 ± 2% +17.5% 67.00 vmstat.procs.r 20936 -24.8% 15752 ± 2% vmstat.system.cs 45474 -1.7% 44681 vmstat.system.in 6.50 ± 59% +1157.7% 81.75 ± 75% numa-vmstat.node0.nr_mlock 242870 ± 3% +13.2% 274913 ± 7% numa-vmstat.node0.nr_written 2278 ± 7% -22.6% 1763 ± 21% numa-vmstat.node1.nr_free_cma 4.75 ± 58% +1789.5% 89.75 ±109% numa-vmstat.node1.nr_mlock 88018135 ± 3% -48.9% 44980457 ± 7% cpuidle.C1.time 1398288 ± 3% -51.1% 683493 ± 9% cpuidle.C1.usage 3499814 ± 2% -38.5% 2153158 ± 5% cpuidle.C1E.time 52722 ± 4% -45.6% 28692 ± 6% cpuidle.C1E.usage 9865857 ± 3% -40.1% 5905155 ± 5% cpuidle.C3.time 69656 ± 2% -42.6% 39990 ± 5% cpuidle.C3.usage 590856 ± 2% -12.3% 517910 cpuidle.C6.usage 46160 ± 7% -53.7% 21372 ± 11% cpuidle.POLL.time 1716 ± 7% -46.6% 916.25 ± 14% cpuidle.POLL.usage 197656 +4.1% 205732 proc-vmstat.nr_active_file 191867 +4.1% 199647 proc-vmstat.nr_dirty 509282 +1.6% 517318 proc-vmstat.nr_file_pages 2282 ± 8% -24.4% 1725 ± 22% proc-vmstat.nr_free_cma 357.50 +10.6% 395.25 ± 2% proc-vmstat.nr_inactive_file 11.50 ± 58% +1397.8% 172.25 ± 93% proc-vmstat.nr_mlock 970355 ± 4% +14.6% 1111549 ± 8% proc-vmstat.nr_written 197984 +4.1% 206034 proc-vmstat.nr_zone_active_file 357.50 +10.6% 395.25 ± 2% proc-vmstat.nr_zone_inactive_file 192282 +4.1% 200126 proc-vmstat.nr_zone_write_pending 7901465 ± 3% -14.0% 6795016 ± 16% proc-vmstat.pgalloc_movable 886101 +10.2% 976329 proc-vmstat.pgfault 2.169e+12 +15.2% 2.497e+12 perf-stat.branch-instructions 0.41 -0.1 0.35 perf-stat.branch-miss-rate% 31.19 ± 2% +1.6 32.82 perf-stat.cache-miss-rate% 9.116e+09 +8.3% 9.869e+09 perf-stat.cache-misses 2.924e+10 +2.9% 3.008e+10 ± 2% perf-stat.cache-references 6712739 ± 2% -15.4% 5678643 ± 2% perf-stat.context-switches 4.02 +2.7% 4.13 perf-stat.cpi 3.761e+13 +17.3% 4.413e+13 perf-stat.cpu-cycles 606958 -13.7% 523758 ± 2% perf-stat.cpu-migrations 2.476e+12 +13.4% 2.809e+12 perf-stat.dTLB-loads 0.18 ± 2% -0.0 0.16 ± 9% perf-stat.dTLB-store-miss-rate% 1.079e+09 ± 2% -9.6% 9.755e+08 ± 9% perf-stat.dTLB-store-misses 5.933e+11 +1.6% 6.029e+11 perf-stat.dTLB-stores 9.349e+12 +14.2% 1.068e+13 perf-stat.instructions 11247 ± 11% +19.8% 13477 ± 9% perf-stat.instructions-per-iTLB-miss 0.25 -2.6% 0.24 perf-stat.ipc 865561 +10.3% 954350 perf-stat.minor-faults 2.901e+09 ± 3% +9.8% 3.186e+09 ± 3% perf-stat.node-load-misses 3.682e+09 ± 3% +11.0% 4.088e+09 ± 3% perf-stat.node-loads 3.778e+09 +4.8% 3.959e+09 ± 2% perf-stat.node-store-misses 5.079e+09 +6.4% 5.402e+09 perf-stat.node-stores 865565 +10.3% 954352 perf-stat.page-faults 51.75 ± 5% -12.5% 45.30 ± 10% sched_debug.cfs_rq:/.load_avg.avg 316.35 ± 3% +17.2% 370.81 ± 8% sched_debug.cfs_rq:/.util_est_enqueued.stddev 15294 ± 30% +234.9% 51219 ± 76% sched_debug.cpu.avg_idle.min 299443 ± 3% -7.3% 277566 ± 5% sched_debug.cpu.avg_idle.stddev 1182 ± 19% -26.3% 872.02 ± 13% sched_debug.cpu.nr_load_updates.stddev 1.22 ± 8% +21.7% 1.48 ± 6% sched_debug.cpu.nr_running.avg 2.75 ± 10% +26.2% 3.47 ± 6% sched_debug.cpu.nr_running.max 0.58 ± 7% +24.2% 0.73 ± 6% sched_debug.cpu.nr_running.stddev 77148 -20.0% 61702 ± 7% sched_debug.cpu.nr_switches.avg 70024 -24.8% 52647 ± 8% sched_debug.cpu.nr_switches.min 6662 ± 6% +61.9% 10789 ± 24% sched_debug.cpu.nr_switches.stddev 80.45 ± 18% -19.1% 65.05 ± 6% sched_debug.cpu.nr_uninterruptible.stddev 76819 -19.3% 62008 ± 8% sched_debug.cpu.sched_count.avg 70616 -23.5% 53996 ± 8% sched_debug.cpu.sched_count.min 5494 ± 9% +85.3% 10179 ± 26% sched_debug.cpu.sched_count.stddev 16936 -52.9% 7975 ± 9% sched_debug.cpu.sched_goidle.avg 19281 -49.9% 9666 ± 7% sched_debug.cpu.sched_goidle.max 15417 -54.8% 6962 ± 10% sched_debug.cpu.sched_goidle.min 875.00 ± 6% -35.0% 569.09 ± 13% sched_debug.cpu.sched_goidle.stddev 40332 -23.5% 30851 ± 7% sched_debug.cpu.ttwu_count.avg 35074 -26.3% 25833 ± 6% sched_debug.cpu.ttwu_count.min 3239 ± 8% +67.4% 5422 ± 28% sched_debug.cpu.ttwu_count.stddev 5232 +27.4% 6665 ± 13% sched_debug.cpu.ttwu_local.avg 15877 ± 12% +77.5% 28184 ± 27% sched_debug.cpu.ttwu_local.max 2530 ± 10% +95.9% 4956 ± 27% sched_debug.cpu.ttwu_local.stddev 2.52 ± 7% -0.6 1.95 ± 3% perf-profile.calltrace.cycles-pp.btrfs_dirty_pages.__btrfs_buffered_write.btrfs_file_write_iter.__vfs_write.vfs_write 1.48 ± 12% -0.5 1.01 ± 4% perf-profile.calltrace.cycles-pp.btrfs_get_extent.btrfs_dirty_pages.__btrfs_buffered_write.btrfs_file_write_iter.__vfs_write 1.18 ± 16% -0.4 0.76 ± 7% perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_lookup_file_extent.btrfs_get_extent.btrfs_dirty_pages.__btrfs_buffered_write 1.18 ± 16% -0.4 0.76 ± 7% perf-profile.calltrace.cycles-pp.btrfs_lookup_file_extent.btrfs_get_extent.btrfs_dirty_pages.__btrfs_buffered_write.btrfs_file_write_iter 0.90 ± 17% -0.3 0.56 ± 4% perf-profile.calltrace.cycles-pp.__dentry_kill.dentry_kill.dput.__fput.task_work_run 0.90 ± 17% -0.3 0.56 ± 4% perf-profile.calltrace.cycles-pp.evict.__dentry_kill.dentry_kill.dput.__fput 0.90 ± 17% -0.3 0.56 ± 4% perf-profile.calltrace.cycles-pp.dentry_kill.dput.__fput.task_work_run.exit_to_usermode_loop 0.90 ± 18% -0.3 0.56 ± 4% perf-profile.calltrace.cycles-pp.btrfs_evict_inode.evict.__dentry_kill.dentry_kill.dput 0.90 ± 17% -0.3 0.57 ± 5% perf-profile.calltrace.cycles-pp.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.90 ± 17% -0.3 0.57 ± 5% perf-profile.calltrace.cycles-pp.task_work_run.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.90 ± 17% -0.3 0.57 ± 5% perf-profile.calltrace.cycles-pp.__fput.task_work_run.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.90 ± 17% -0.3 0.57 ± 5% perf-profile.calltrace.cycles-pp.dput.__fput.task_work_run.exit_to_usermode_loop.do_syscall_64 1.69 -0.1 1.54 ± 2% perf-profile.calltrace.cycles-pp.lock_and_cleanup_extent_if_need.__btrfs_buffered_write.btrfs_file_write_iter.__vfs_write.vfs_write 0.87 ± 4% -0.1 0.76 ± 2% perf-profile.calltrace.cycles-pp.__clear_extent_bit.clear_extent_bit.lock_and_cleanup_extent_if_need.__btrfs_buffered_write.btrfs_file_write_iter 0.87 ± 4% -0.1 0.76 ± 2% perf-profile.calltrace.cycles-pp.clear_extent_bit.lock_and_cleanup_extent_if_need.__btrfs_buffered_write.btrfs_file_write_iter.__vfs_write 0.71 ± 6% -0.1 0.61 ± 2% perf-profile.calltrace.cycles-pp.clear_state_bit.__clear_extent_bit.clear_extent_bit.lock_and_cleanup_extent_if_need.__btrfs_buffered_write 0.69 ± 6% -0.1 0.60 ± 2% perf-profile.calltrace.cycles-pp.btrfs_clear_bit_hook.clear_state_bit.__clear_extent_bit.clear_extent_bit.lock_and_cleanup_extent_if_need 96.77 +0.6 97.33 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe 0.00 +0.6 0.56 ± 3% perf-profile.calltrace.cycles-pp.can_overcommit.reserve_metadata_bytes.btrfs_delalloc_reserve_metadata.__btrfs_buffered_write.btrfs_file_write_iter 96.72 +0.6 97.29 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe 43.13 +0.8 43.91 perf-profile.calltrace.cycles-pp.btrfs_inode_rsv_release.__btrfs_buffered_write.btrfs_file_write_iter.__vfs_write.vfs_write 42.37 +0.8 43.16 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.block_rsv_release_bytes.btrfs_inode_rsv_release.__btrfs_buffered_write 43.11 +0.8 43.89 perf-profile.calltrace.cycles-pp.block_rsv_release_bytes.btrfs_inode_rsv_release.__btrfs_buffered_write.btrfs_file_write_iter.__vfs_write 42.96 +0.8 43.77 perf-profile.calltrace.cycles-pp._raw_spin_lock.block_rsv_release_bytes.btrfs_inode_rsv_release.__btrfs_buffered_write.btrfs_file_write_iter 95.28 +0.9 96.23 perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 95.22 +1.0 96.18 perf-profile.calltrace.cycles-pp.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 94.88 +1.0 95.85 perf-profile.calltrace.cycles-pp.__vfs_write.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 94.83 +1.0 95.80 perf-profile.calltrace.cycles-pp.btrfs_file_write_iter.__vfs_write.vfs_write.ksys_write.do_syscall_64 94.51 +1.0 95.50 perf-profile.calltrace.cycles-pp.__btrfs_buffered_write.btrfs_file_write_iter.__vfs_write.vfs_write.ksys_write 42.44 +1.1 43.52 perf-profile.calltrace.cycles-pp._raw_spin_lock.reserve_metadata_bytes.btrfs_delalloc_reserve_metadata.__btrfs_buffered_write.btrfs_file_write_iter 42.09 +1.1 43.18 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.reserve_metadata_bytes.btrfs_delalloc_reserve_metadata.__btrfs_buffered_write 44.07 +1.2 45.29 perf-profile.calltrace.cycles-pp.btrfs_delalloc_reserve_metadata.__btrfs_buffered_write.btrfs_file_write_iter.__vfs_write.vfs_write 43.42 +1.3 44.69 perf-profile.calltrace.cycles-pp.reserve_metadata_bytes.btrfs_delalloc_reserve_metadata.__btrfs_buffered_write.btrfs_file_write_iter.__vfs_write 2.06 ± 18% -0.9 1.21 ± 6% perf-profile.children.cycles-pp.btrfs_search_slot 2.54 ± 7% -0.6 1.96 ± 3% perf-profile.children.cycles-pp.btrfs_dirty_pages 1.05 ± 24% -0.5 0.52 ± 9% perf-profile.children.cycles-pp._raw_spin_lock_irqsave 1.50 ± 12% -0.5 1.03 ± 4% perf-profile.children.cycles-pp.btrfs_get_extent 1.22 ± 15% -0.4 0.79 ± 8% perf-profile.children.cycles-pp.btrfs_lookup_file_extent 0.81 ± 5% -0.4 0.41 ± 6% perf-profile.children.cycles-pp.btrfs_calc_reclaim_metadata_size 0.74 ± 24% -0.4 0.35 ± 9% perf-profile.children.cycles-pp.btrfs_lock_root_node 0.74 ± 24% -0.4 0.35 ± 9% perf-profile.children.cycles-pp.btrfs_tree_lock 0.90 ± 17% -0.3 0.56 ± 4% perf-profile.children.cycles-pp.__dentry_kill 0.90 ± 17% -0.3 0.56 ± 4% perf-profile.children.cycles-pp.evict 0.90 ± 17% -0.3 0.56 ± 4% perf-profile.children.cycles-pp.dentry_kill 0.90 ± 18% -0.3 0.56 ± 4% perf-profile.children.cycles-pp.btrfs_evict_inode 0.91 ± 18% -0.3 0.57 ± 4% perf-profile.children.cycles-pp.exit_to_usermode_loop 0.52 ± 20% -0.3 0.18 ± 14% perf-profile.children.cycles-pp.do_idle 0.90 ± 17% -0.3 0.57 ± 5% perf-profile.children.cycles-pp.task_work_run 0.90 ± 17% -0.3 0.57 ± 5% perf-profile.children.cycles-pp.__fput 0.90 ± 18% -0.3 0.57 ± 4% perf-profile.children.cycles-pp.dput 0.51 ± 20% -0.3 0.18 ± 14% perf-profile.children.cycles-pp.secondary_startup_64 0.51 ± 20% -0.3 0.18 ± 14% perf-profile.children.cycles-pp.cpu_startup_entry 0.50 ± 21% -0.3 0.17 ± 16% perf-profile.children.cycles-pp.start_secondary 0.47 ± 20% -0.3 0.16 ± 13% perf-profile.children.cycles-pp.cpuidle_enter_state 0.47 ± 19% -0.3 0.16 ± 13% perf-profile.children.cycles-pp.intel_idle 0.61 ± 20% -0.3 0.36 ± 11% perf-profile.children.cycles-pp.btrfs_tree_read_lock 0.47 ± 26% -0.3 0.21 ± 10% perf-profile.children.cycles-pp.prepare_to_wait_event 0.64 ± 18% -0.2 0.39 ± 9% perf-profile.children.cycles-pp.btrfs_read_lock_root_node 0.40 ± 22% -0.2 0.21 ± 5% perf-profile.children.cycles-pp.btrfs_clear_path_blocking 0.38 ± 23% -0.2 0.19 ± 13% perf-profile.children.cycles-pp.finish_wait 1.51 ± 3% -0.2 1.35 ± 2% perf-profile.children.cycles-pp.__clear_extent_bit 1.71 -0.1 1.56 ± 2% perf-profile.children.cycles-pp.lock_and_cleanup_extent_if_need 0.29 ± 25% -0.1 0.15 ± 10% perf-profile.children.cycles-pp.btrfs_orphan_del 0.27 ± 27% -0.1 0.12 ± 8% perf-profile.children.cycles-pp.btrfs_del_orphan_item 0.33 ± 18% -0.1 0.19 ± 9% perf-profile.children.cycles-pp.queued_read_lock_slowpath 0.33 ± 19% -0.1 0.20 ± 4% perf-profile.children.cycles-pp.__wake_up_common_lock 0.45 ± 15% -0.1 0.34 ± 2% perf-profile.children.cycles-pp.btrfs_alloc_data_chunk_ondemand 0.47 ± 16% -0.1 0.36 ± 4% perf-profile.children.cycles-pp.btrfs_check_data_free_space 0.91 ± 4% -0.1 0.81 ± 3% perf-profile.children.cycles-pp.clear_extent_bit 1.07 ± 5% -0.1 0.97 perf-profile.children.cycles-pp.__set_extent_bit 0.77 ± 6% -0.1 0.69 ± 3% perf-profile.children.cycles-pp.btrfs_clear_bit_hook 0.17 ± 20% -0.1 0.08 ± 10% perf-profile.children.cycles-pp.queued_write_lock_slowpath 0.16 ± 22% -0.1 0.08 ± 24% perf-profile.children.cycles-pp.btrfs_lookup_inode 0.21 ± 17% -0.1 0.14 ± 19% perf-profile.children.cycles-pp.__btrfs_update_delayed_inode 0.26 ± 12% -0.1 0.18 ± 13% perf-profile.children.cycles-pp.btrfs_async_run_delayed_root 0.52 ± 5% -0.1 0.45 perf-profile.children.cycles-pp.set_extent_bit 0.45 ± 5% -0.1 0.40 ± 3% perf-profile.children.cycles-pp.alloc_extent_state 0.11 ± 17% -0.1 0.06 ± 11% perf-profile.children.cycles-pp.btrfs_clear_lock_blocking_rw 0.28 ± 9% -0.0 0.23 ± 3% perf-profile.children.cycles-pp.btrfs_drop_pages 0.07 -0.0 0.03 ±100% perf-profile.children.cycles-pp.btrfs_set_lock_blocking_rw 0.39 ± 3% -0.0 0.34 ± 3% perf-profile.children.cycles-pp.get_alloc_profile 0.33 ± 7% -0.0 0.29 perf-profile.children.cycles-pp.btrfs_set_extent_delalloc 0.38 ± 2% -0.0 0.35 ± 4% perf-profile.children.cycles-pp.__set_page_dirty_nobuffers 0.49 ± 3% -0.0 0.46 ± 3% perf-profile.children.cycles-pp.pagecache_get_page 0.18 ± 4% -0.0 0.15 ± 2% perf-profile.children.cycles-pp.truncate_inode_pages_range 0.08 ± 5% -0.0 0.05 ± 9% perf-profile.children.cycles-pp.btrfs_set_path_blocking 0.08 ± 6% -0.0 0.06 ± 6% perf-profile.children.cycles-pp.truncate_cleanup_page 0.80 ± 4% +0.2 0.95 ± 2% perf-profile.children.cycles-pp.can_overcommit 96.84 +0.5 97.37 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 96.80 +0.5 97.35 perf-profile.children.cycles-pp.do_syscall_64 43.34 +0.8 44.17 perf-profile.children.cycles-pp.btrfs_inode_rsv_release 43.49 +0.8 44.32 perf-profile.children.cycles-pp.block_rsv_release_bytes 95.32 +0.9 96.26 perf-profile.children.cycles-pp.ksys_write 95.26 +0.9 96.20 perf-profile.children.cycles-pp.vfs_write 94.91 +1.0 95.88 perf-profile.children.cycles-pp.__vfs_write 94.84 +1.0 95.81 perf-profile.children.cycles-pp.btrfs_file_write_iter 94.55 +1.0 95.55 perf-profile.children.cycles-pp.__btrfs_buffered_write 86.68 +1.0 87.70 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath 44.08 +1.2 45.31 perf-profile.children.cycles-pp.btrfs_delalloc_reserve_metadata 43.49 +1.3 44.77 perf-profile.children.cycles-pp.reserve_metadata_bytes 87.59 +1.8 89.38 perf-profile.children.cycles-pp._raw_spin_lock 0.47 ± 19% -0.3 0.16 ± 13% perf-profile.self.cycles-pp.intel_idle 0.33 ± 6% -0.1 0.18 ± 6% perf-profile.self.cycles-pp.get_alloc_profile 0.27 ± 8% -0.0 0.22 ± 4% perf-profile.self.cycles-pp.btrfs_drop_pages 0.07 -0.0 0.03 ±100% perf-profile.self.cycles-pp.btrfs_set_lock_blocking_rw 0.14 ± 5% -0.0 0.12 ± 6% perf-profile.self.cycles-pp.clear_page_dirty_for_io 0.09 ± 5% -0.0 0.07 ± 10% perf-profile.self.cycles-pp._raw_spin_lock_irqsave 0.17 ± 4% +0.1 0.23 ± 3% perf-profile.self.cycles-pp.reserve_metadata_bytes 0.31 ± 7% +0.1 0.45 ± 2% perf-profile.self.cycles-pp.can_overcommit 86.35 +1.0 87.39 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath aim7.jobs-per-min 29000 +-+-----------------------------------------------------------------+ 28500 +-+ +.. + +..+.. +.. | |..+ +.+..+.. : .. + .+.+..+..+.+.. .+..+.. + + + | 28000 +-+ + .. : + +. + + + | 27500 +-+ + + | | | 27000 +-+ | 26500 +-+ | 26000 +-+ | | | 25500 +-+ O O O O O | 25000 +-+ O O O O O O O O O | O O O O O O O O | 24500 O-+O O O O | 24000 +-+-----------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Xiaolong

2 years, 1 month

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530a2dac5b ("atomic_trylock conversions"): watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [kworker/u4:2:47]

by kernel test robot

Greetings, 0day kernel testing robot got the below dmesg and the first bad commit is git://git.infradead.org/users/willy/linux-dax.git xarray-conv commit 530a2dac5ba3d2d6c77af6dc82ef83e9a8050512 Author: Matthew Wilcox <willy(a)infradead.org> AuthorDate: Sat Oct 27 08:14:07 2018 -0400 Commit: Matthew Wilcox <willy(a)infradead.org> CommitDate: Fri Nov 30 12:45:26 2018 -0500 atomic_trylock conversions 5b50b41729 nfs: Convert cb_ident_idr to XArray 530a2dac5b atomic_trylock conversions e999b2b05c scsi: Convert same_target_siblings to XArray +------------------------------------------------+------------+------------+------------+ | | 5b50b41729 | 530a2dac5b | e999b2b05c | +------------------------------------------------+------------+------------+------------+ | boot_successes | 65 | 0 | 0 | | boot_failures | 0 | 34 | 21 | | BUG:soft_lockup-CPU##stuck_for#s | 0 | 34 | 21 | | EIP:osq_lock | 0 | 34 | 21 | | Kernel_panic-not_syncing:softlockup:hung_tasks | 0 | 34 | 21 | +------------------------------------------------+------------+------------+------------+ [ 1.068813] spin_lock-torture: Creating lock_torture_stats task [ 1.069597] spin_lock-torture: lock_torture_writer task started [ 1.070700] spin_lock-torture: lock_torture_stats task started [ 1.623681] _warn_unseeded_randomness: 1 callbacks suppressed [ 1.623693] random: get_random_u32 called from get_random_order+0x65/0x90 with crng_init=0 [ 28.503079] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [kworker/u4:2:47] [ 28.503079] irq event stamp: 28084 [ 28.503079] hardirqs last enabled at (28083): [<79000ff6>] trace_hardirqs_on_thunk+0xc/0x10 [ 28.503079] hardirqs last disabled at (28084): [<79001006>] trace_hardirqs_off_thunk+0xc/0x10 [ 28.503079] softirqs last enabled at (28082): [<79a97006>] __do_softirq+0x3c6/0x445 [ 28.503079] softirqs last disabled at (28075): [<7901d2b8>] do_softirq_own_stack+0x28/0x40 [ 28.503079] CPU: 1 PID: 47 Comm: kworker/u4:2 Not tainted 4.20.0-rc4-00242-g530a2da #1078 [ 28.503079] Workqueue: test-ww_mutex stress_inorder_work [ 28.503079] EIP: osq_lock+0xaa/0x120 [ 28.503079] Code: 3b 11 74 0c 8b 42 08 85 c0 74 1d eb a9 8d 76 00 89 d0 f0 0f b1 31 39 c2 75 ea 8d b6 00 00 00 00 eb 0d 8d b6 00 00 00 00 f3 90 <8b> 4a 04 eb d1 64 8b 35 24 a1 0e 7a 46 85 c9 74 08 8b 41 0c 89 45 [ 28.503079] EAX: 00000000 EBX: 96952654 ECX: 975f88c0 EDX: 9775a8c0 [ 28.503079] ESI: 00000000 EDI: 96952654 EBP: 9568de14 ESP: 9568de04 [ 28.503079] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00200246 [ 28.503079] CR0: 80050033 CR2: ffffffff CR3: 0224a000 CR4: 001406d0 [ 28.503079] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 28.503079] DR6: fffe0ff0 DR7: 00000400 [ 28.503079] Call Trace: [ 28.503079] __ww_mutex_lock+0x20b/0xe90 [ 28.503079] ? __ww_mutex_lock+0x118/0xe90 [ 28.503079] ? stress_inorder_work+0x1bc/0x2f0 [ 28.503079] ? __might_sleep+0x77/0xa0 [ 28.503079] ww_mutex_lock+0x3a/0xa0 [ 28.503079] ? stress_inorder_work+0x112/0x2f0 [ 28.503079] stress_inorder_work+0x112/0x2f0 [ 28.503079] ? process_one_work+0x2c5/0x570 [ 28.503079] process_one_work+0x2c5/0x570 [ 28.503079] ? process_one_work+0x1a0/0x570 [ 28.503079] ? worker_thread+0x37/0x450 [ 28.503079] worker_thread+0x2a9/0x450 [ 28.503079] kthread+0xfd/0x110 [ 28.503079] ? process_one_work+0x570/0x570 [ 28.503079] ? __kthread_bind_mask+0x60/0x60 [ 28.503079] ret_from_fork+0x19/0x24 [ 28.503079] Kernel panic - not syncing: softlockup: hung tasks [ 28.503079] CPU: 1 PID: 47 Comm: kworker/u4:2 Tainted: G L 4.20.0-rc4-00242-g530a2da #1078 [ 28.503079] Workqueue: test-ww_mutex stress_inorder_work [ 28.503079] Call Trace: [ 28.503079] dump_stack+0x60/0x96 [ 28.503079] panic+0xa3/0x1d8 [ 28.503079] watchdog_timer_fn+0x225/0x270 [ 28.503079] __hrtimer_run_queues+0x2e7/0x500 [ 28.503079] ? softlockup_fn+0x40/0x40 [ 28.503079] hrtimer_interrupt+0x10a/0x290 [ 28.503079] smp_apic_timer_interrupt+0x153/0x2a0 [ 28.503079] ? trace_hardirqs_off_thunk+0xc/0x10 [ 28.503079] apic_timer_interrupt+0xe8/0xf0 [ 28.503079] EIP: osq_lock+0xaa/0x120 [ 28.503079] Code: 3b 11 74 0c 8b 42 08 85 c0 74 1d eb a9 8d 76 00 89 d0 f0 0f b1 31 39 c2 75 ea 8d b6 00 00 00 00 eb 0d 8d b6 00 00 00 00 f3 90 <8b> 4a 04 eb d1 64 8b 35 24 a1 0e 7a 46 85 c9 74 08 8b 41 0c 89 45 [ 28.503079] EAX: 00000000 EBX: 96952654 ECX: 975f88c0 EDX: 9775a8c0 [ 28.503079] ESI: 00000000 EDI: 96952654 EBP: 9568de14 ESP: 9568de04 [ 28.503079] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00200246 [ 28.503079] __ww_mutex_lock+0x20b/0xe90 [ 28.503079] ? __ww_mutex_lock+0x118/0xe90 [ 28.503079] ? stress_inorder_work+0x1bc/0x2f0 [ 28.503079] ? __might_sleep+0x77/0xa0 [ 28.503079] ww_mutex_lock+0x3a/0xa0 [ 28.503079] ? stress_inorder_work+0x112/0x2f0 [ 28.503079] stress_inorder_work+0x112/0x2f0 [ 28.503079] ? process_one_work+0x2c5/0x570 [ 28.503079] process_one_work+0x2c5/0x570 [ 28.503079] ? process_one_work+0x1a0/0x570 [ 28.503079] ? worker_thread+0x37/0x450 [ 28.503079] worker_thread+0x2a9/0x450 [ 28.503079] kthread+0xfd/0x110 [ 28.503079] ? process_one_work+0x570/0x570 [ 28.503079] ? __kthread_bind_mask+0x60/0x60 [ 28.503079] ret_from_fork+0x19/0x24 [ 28.503079] Kernel Offset: disabled # HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD git bisect start e999b2b05c4509823c2154abf926b7f72969df91 94f371cb73944b410a269d570d6946c042f2ddd0 -- git bisect good 308f079ebe859e59f7d16d205673b7c8a6d02c59 # 05:07 G 16 0 4 4 radix tree: Remove preload API git bisect good ff24e1e4ace20a91359fbd0a0bf309a5a5c0d422 # 05:17 G 16 0 0 0 pinctrl: Convert pin_group_tree to XArray git bisect good 6c71ed0cd588678e10d47443db787cef768e9dc6 # 05:31 G 15 0 1 1 st: Convert to XArray git bisect good c16f163da63b94be35fa6b3757546522ddae4796 # 05:40 G 15 0 1 1 firewire: Convert resource_idr to XArray git bisect bad adb2113b7e418b5f0b4b239327c79b69221d098d # 05:49 B 8 7 8 24 fls: Change parameter to unsigned int git bisect good 5b50b41729260404716d66e049f9ceacf24dc3a2 # 06:06 G 15 0 0 0 nfs: Convert cb_ident_idr to XArray git bisect bad 530a2dac5ba3d2d6c77af6dc82ef83e9a8050512 # 06:18 B 1 2 1 1 atomic_trylock conversions # first bad commit: [530a2dac5ba3d2d6c77af6dc82ef83e9a8050512] atomic_trylock conversions git bisect good 5b50b41729260404716d66e049f9ceacf24dc3a2 # 06:23 G 47 0 0 0 nfs: Convert cb_ident_idr to XArray # extra tests on HEAD of dax/xarray-conv git bisect bad e999b2b05c4509823c2154abf926b7f72969df91 # 06:23 B 0 9 36 10 scsi: Convert same_target_siblings to XArray # extra tests on tree/branch dax/xarray-conv git bisect bad e999b2b05c4509823c2154abf926b7f72969df91 # 06:24 B 0 9 36 10 scsi: Convert same_target_siblings to XArray # extra tests with first bad commit reverted git bisect good ce135013d596cf882c6593671836f6d99e459312 # 06:45 G 16 0 0 0 Revert "atomic_trylock conversions" --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/lkp Intel Corporation

2 years, 1 month

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[NFS] 227a5ea5cc: BUG:KASAN:null-ptr-deref_in_s

by kernel test robot

FYI, we noticed the following commit (built with gcc-7): commit: 227a5ea5ccad1d2fed224de487b5062902e768af ("NFS: Add fs_context support.") https://git.kernel.org/cgit/linux/kernel/git/viro/vfs.git Q18 in testcase: trinity with following parameters: runtime: 300s test-description: Trinity is a linux system call fuzz tester. test-url: http://codemonkey.org.uk/projects/trinity/ on test machine: qemu-system-x86_64 -enable-kvm -cpu IvyBridge -smp 2 -m 2G caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +------------------------------------------------+------------+------------+ | | b51dcaefdc | 227a5ea5cc | +------------------------------------------------+------------+------------+ | boot_successes | 4 | 0 | | boot_failures | 2 | 4 | | IP-Config:Auto-configuration_of_network_failed | 2 | | | BUG:KASAN:null-ptr-deref_in_s | 0 | 4 | | BUG:unable_to_handle_kernel | 0 | 4 | | Oops:#[##] | 0 | 4 | | RIP:security_sb_set_mnt_opts | 0 | 4 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 4 | +------------------------------------------------+------------+------------+ [ 66.318452] BUG: KASAN: null-ptr-deref in security_sb_set_mnt_opts+0x2a/0xeb [ 66.319619] Read of size 4 at addr 0000000000000010 by task mount.nfs/476 [ 66.320733] [ 66.321096] CPU: 0 PID: 476 Comm: mount.nfs Not tainted 4.20.0-rc1-00059-g227a5ea #1 [ 66.322433] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 [ 66.323855] Call Trace: [ 66.324388] dump_stack+0x2f/0x3e [ 66.325027] kasan_report+0x311/0x393 [ 66.325699] __asan_load4+0x2d/0xe2 [ 66.326355] security_sb_set_mnt_opts+0x2a/0xeb [ 66.327158] nfs_set_sb_security+0xdc/0x197 [ 66.327916] ? nfs_reconfigure+0x549/0x549 [ 66.328649] nfs_get_tree_common+0x738/0x7c1 [ 66.329440] nfs_try_get_tree+0x45e/0x4ae [ 66.330179] ? nfs_get_tree_common+0x7c1/0x7c1 [ 66.330977] ? nfs_fs_context_validate+0x598/0x7d6 [ 66.331811] ? generic_parse_monolithic+0x17c/0x1b6 [ 66.332675] ? ___might_sleep+0xa0/0x2ab [ 66.333403] ? kasan_check_read+0x1b/0x23 [ 66.344026] ? preempt_count_add+0x114/0x127 [ 66.344852] ? preempt_count_sub+0x1f/0x15f [ 66.345605] ? find_nfs_version+0x139/0x143 [ 66.346367] nfs_get_tree+0x258/0x2a8 [ 66.347060] ? vfs_get_tree+0x133/0x3a4 [ 66.347791] vfs_get_tree+0x139/0x3a4 [ 66.348470] do_mount+0x10b8/0x1220 [ 66.349143] ? copy_mount_string+0x4d/0x4d [ 66.349889] ? kmem_cache_alloc_trace+0x239/0x24f [ 66.350723] ? copy_mount_options+0x42/0x2d3 [ 66.351484] ? copy_mount_options+0x2c4/0x2d3 [ 66.352241] ksys_mount+0xce/0x11e [ 66.352890] __x64_sys_mount+0x72/0x83 [ 66.353612] do_syscall_64+0xa8/0x1eb [ 66.354283] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 66.355182] RIP: 0033:0x7f9a1e19a24a [ 66.355867] Code: 48 8b 0d 51 fc 2a 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 1e fc 2a 00 f7 d8 64 89 01 48 [ 66.358838] RSP: 002b:00007fffdd4e9928 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 66.360112] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9a1e19a24a [ 66.361321] RDX: 00005582b0a54f70 RSI: 00005582b0a54f50 RDI: 00005582b0a53210 [ 66.362507] RBP: 00007fffdd4e9b20 R08: 00005582b0a60320 R09: 0000000000000060 [ 66.363654] R10: 0000000000000000 R11: 0000000000000206 R12: 00007f9a1eade410 [ 66.364845] R13: 00007fffdd4e9b20 R14: 00007fffdd4e9a20 R15: 00005582b0a60300 [ 66.366043] ================================================================== [ 66.367300] Disabling lock debugging due to kernel taint [ 66.512352] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 [ 66.513807] PGD 0 P4D 0 [ 66.514322] Oops: 0000 [#1] PREEMPT KASAN PTI [ 66.515181] CPU: 0 PID: 476 Comm: mount.nfs Tainted: G B 4.20.0-rc1-00059-g227a5ea #1 [ 66.516770] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 [ 66.518260] RIP: 0010:security_sb_set_mnt_opts+0x2a/0xeb [ 66.519206] Code: 0f 1f 44 00 00 41 57 41 56 49 89 cf 41 55 41 54 49 89 f4 55 53 49 89 fd 49 89 d6 e8 6e b4 4e ff 49 8d 7c 24 10 e8 c4 bc 67 ff <41> 8b 6c 24 10 85 ed 75 0e e8 56 b4 4e ff 48 ff 05 7e a5 ca 05 eb [ 66.522264] RSP: 0000:ffff88005318fa98 EFLAGS: 00010202 [ 66.523204] RAX: 0000000000000000 RBX: 1ffff1000a631f5a RCX: ffffffff811943ee [ 66.524369] RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffffffff8757b800 [ 66.525587] RBP: ffff880051c82ee8 R08: fffffbfff094d03d R09: fffffbfff070c539 [ 66.526786] R10: fffffbfff0d3ba43 R11: fffffbfff094d03c R12: 0000000000000000 [ 66.527975] R13: ffff880051c82ee8 R14: 0000000000000000 R15: ffff88005318faf0 [ 66.529209] FS: 00007f9a1eade480(0000) GS:ffffffff848f2000(0000) knlGS:0000000000000000 [ 66.530619] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.531620] CR2: 0000000000000010 CR3: 00000000533b2000 CR4: 00000000001406b0 [ 66.532814] Call Trace: [ 66.533353] nfs_set_sb_security+0xdc/0x197 [ 66.534105] ? nfs_reconfigure+0x549/0x549 [ 66.534852] nfs_get_tree_common+0x738/0x7c1 [ 66.535657] nfs_try_get_tree+0x45e/0x4ae [ 66.536397] ? nfs_get_tree_common+0x7c1/0x7c1 [ 66.537170] ? nfs_fs_context_validate+0x598/0x7d6 [ 66.538008] ? generic_parse_monolithic+0x17c/0x1b6 [ 66.538868] ? ___might_sleep+0xa0/0x2ab [ 66.539578] ? kasan_check_read+0x1b/0x23 [ 66.540381] ? preempt_count_add+0x114/0x127 [ 66.541144] ? preempt_count_sub+0x1f/0x15f [ 66.541907] ? find_nfs_version+0x139/0x143 [ 66.542687] nfs_get_tree+0x258/0x2a8 [ 66.543363] ? vfs_get_tree+0x133/0x3a4 [ 66.544065] vfs_get_tree+0x139/0x3a4 [ 66.544753] do_mount+0x10b8/0x1220 [ 66.545414] ? copy_mount_string+0x4d/0x4d [ 66.546180] ? kmem_cache_alloc_trace+0x239/0x24f [ 66.547037] ? copy_mount_options+0x42/0x2d3 [ 66.547834] ? copy_mount_options+0x2c4/0x2d3 [ 66.548625] ksys_mount+0xce/0x11e [ 66.549314] __x64_sys_mount+0x72/0x83 [ 66.550033] do_syscall_64+0xa8/0x1eb [ 66.550745] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 66.551641] RIP: 0033:0x7f9a1e19a24a [ 66.552309] Code: 48 8b 0d 51 fc 2a 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 1e fc 2a 00 f7 d8 64 89 01 48 [ 66.555317] RSP: 002b:00007fffdd4e9928 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 66.556645] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9a1e19a24a [ 66.557874] RDX: 00005582b0a54f70 RSI: 00005582b0a54f50 RDI: 00005582b0a53210 [ 66.559065] RBP: 00007fffdd4e9b20 R08: 00005582b0a60320 R09: 0000000000000060 [ 66.560223] R10: 0000000000000000 R11: 0000000000000206 R12: 00007f9a1eade410 [ 66.561382] R13: 00007fffdd4e9b20 R14: 00007fffdd4e9a20 R15: 00005582b0a60300 [ 66.562573] CR2: 0000000000000010 [ 66.696349] ---[ end trace b3babf6df207a75b ]--- To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email Thanks, lkp

2 years, 1 month

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[locking/lockdep] fe7e1ef5c1: WARNING:at_kernel/locking/lockdep.c:#register_lock_class

by kernel test robot

FYI, we noticed the following commit (built with gcc-4.9): commit: fe7e1ef5c1044f3ef122b877b078a47e74360dea ("locking/lockdep: Complain if a lock object has no name") https://github.com/bvanassche/linux for-next in testcase: trinity with following parameters: runtime: 300s test-description: Trinity is a linux system call fuzz tester. test-url: http://codemonkey.org.uk/projects/trinity/ on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 512M caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +----------------------------------------------------------+------------+------------+ | | 5a5c736d38 | fe7e1ef5c1 | +----------------------------------------------------------+------------+------------+ | boot_successes | 4 | 0 | | boot_failures | 0 | 10 | | WARNING:at_kernel/locking/lockdep.c:#register_lock_class | 0 | 10 | | EIP:register_lock_class | 0 | 10 | | EIP:_raw_spin_unlock_irqrestore | 0 | 10 | +----------------------------------------------------------+------------+------------+ [ 3.352301] WARNING: CPU: 0 PID: 0 at kernel/locking/lockdep.c:749 register_lock_class+0x290/0x540 [ 3.372139] Modules linked in: [ 3.377973] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.20.0-rc4-00113-gfe7e1ef #1 [ 3.392870] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 [ 3.409495] EIP: register_lock_class+0x290/0x540 [ 3.418406] Code: 68 78 18 9c c1 e8 bb 2c 01 00 68 a0 18 9c c1 e8 b1 2c 01 00 e8 bb cc 66 00 8b 06 83 c4 0c e9 28 fe ff ff 8d b4 26 00 00 00 00 <0f> 0b e9 8f fd ff ff e8 d4 82 22 00 85 c0 74 20 8b 0d 1c 81 b8 c1 [ 3.453446] EAX: 00000000 EBX: c1a8ac80 ECX: 00000000 EDX: 00000000 [ 3.465266] ESI: dd2d4dfc EDI: 00000000 EBP: dcc39e3c ESP: dcc39e0c [ 3.477580] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00210046 [ 3.489899] CR0: 80050033 CR2: ffffffff CR3: 01da6000 CR4: 00000690 [ 3.501403] Call Trace: [ 3.505909] <IRQ> [ 3.510025] __lock_acquire+0x5a/0x1580 [ 3.517802] ? mark_lock+0x44b/0x5e0 [ 3.524898] ? __lock_acquire+0xd6b/0x1580 [ 3.532707] ? pvclock_clocksource_read+0xae/0x1c0 [ 3.542397] lock_acquire+0x82/0x170 [ 3.549520] ? scheduler_tick+0x46/0x130 [ 3.557632] update_rq_clock+0xbe/0x230 [ 3.565400] ? scheduler_tick+0x46/0x130 [ 3.576551] ? prandom_u32+0x1b/0x30 [ 3.584813] scheduler_tick+0x46/0x130 [ 3.591975] update_process_times+0x36/0x40 [ 3.599822] tick_periodic+0x35/0xc0 [ 3.606977] tick_handle_periodic+0x1d/0x70 [ 3.615298] timer_interrupt+0xd/0x20 [ 3.623461] __handle_irq_event_percpu+0x75/0x410 [ 3.632593] handle_irq_event_percpu+0x26/0x60 [ 3.640826] handle_irq_event+0x29/0x50 [ 3.647859] ? irq_set_chained_handler_and_data+0x70/0x70 [ 3.657327] handle_level_irq+0x7a/0x110 [ 3.664393] handle_irq+0x121/0x160 [ 3.671878] </IRQ> [ 3.676245] do_IRQ+0x48/0x110 [ 3.682343] common_interrupt+0xec/0x100 [ 3.690738] EIP: _raw_spin_unlock_irqrestore+0x2c/0x50 [ 3.701138] Code: e5 56 53 89 c6 89 d3 8d 40 10 8b 4d 04 ba 01 00 00 00 e8 97 cb 96 ff 89 f0 e8 10 1d 97 ff f6 c7 02 74 1b e8 e6 14 9e ff 53 9d <64> ff 0d d0 57 c5 c1 5b 5e 5d c3 89 f6 8d bc 27 00 00 00 00 53 9d [ 3.739514] EAX: c1a8ac80 EBX: 00200246 ECX: 0001056c EDX: 00000001 [ 3.751830] ESI: dcc20464 EDI: c1a9b440 EBP: c1a83f18 ESP: c1a83f10 [ 3.764572] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00200246 [ 3.779245] ? tracing_release+0x11b/0x190 [ 3.787741] ? kmsg_dump_get_buffer+0x48/0x3a0 [ 3.796330] __setup_irq+0x42b/0x6f0 [ 3.803196] setup_irq+0x70/0xd0 [ 3.809035] hpet_time_init+0x1d/0x2e [ 3.815808] x86_late_time_init+0x9/0x16 [ 3.823388] start_kernel+0x414/0x491 [ 3.830092] i386_start_kernel+0x8f/0x93 [ 3.837451] startup_32_smp+0x15f/0x170 [ 3.845072] irq event stamp: 3500 [ 3.853797] hardirqs last enabled at (3497): [<c1767e8a>] _raw_spin_unlock_irqrestore+0x2a/0x50 [ 3.868808] hardirqs last disabled at (3498): [<c100167d>] trace_hardirqs_off_thunk+0xc/0x1f [ 3.886173] softirqs last enabled at (3500): [<c108001c>] _local_bh_enable+0x4c/0x70 [ 3.900372] softirqs last disabled at (3499): [<c1080d00>] irq_enter+0x50/0x70 [ 3.915483] ---[ end trace 11ad95b04038b91f ]--- To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email Thanks, lkp

2 years, 1 month

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[locking/lockdep] 62f18467c4: WARNING:at_kernel/locking/lockdep.c:#register_lock_class

by kernel test robot

FYI, we noticed the following commit (built with gcc-4.9): commit: 62f18467c40065cae25a8e52c41de0d9771cfd24 ("locking/lockdep: Complain if a lock object has no name") https://github.com/bvanassche/linux for-next in testcase: trinity with following parameters: runtime: 300s test-description: Trinity is a linux system call fuzz tester. test-url: http://codemonkey.org.uk/projects/trinity/ on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 512M caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +----------------------------------------------------------+------------+------------+ | | 85c300bf33 | 62f18467c4 | +----------------------------------------------------------+------------+------------+ | boot_successes | 22 | 0 | | boot_failures | 0 | 10 | | WARNING:at_kernel/locking/lockdep.c:#register_lock_class | 0 | 10 | | EIP:register_lock_class | 0 | 10 | | EIP:_raw_spin_unlock_irqrestore | 0 | 10 | +----------------------------------------------------------+------------+------------+ [ 0.308396] WARNING: CPU: 0 PID: 0 at kernel/locking/lockdep.c:746 register_lock_class+0x290/0x540 [ 0.309861] Modules linked in: [ 0.310284] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.20.0-rc4-00049-g62f1846 #1 [ 0.311315] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 [ 0.312423] EIP: register_lock_class+0x290/0x540 [ 0.313066] Code: 68 34 18 9c c1 e8 bb 2c 01 00 68 5c 18 9c c1 e8 b1 2c 01 00 e8 2b cc 66 00 8b 06 83 c4 0c e9 28 fe ff ff 8d b4 26 00 00 00 00 <0f> 0b e9 8f fd ff ff e8 d4 82 22 00 85 c0 74 20 8b 0d dc 80 b8 c1 [ 0.315508] EAX: 00000000 EBX: c1a8ac80 ECX: 00000000 EDX: 00000000 [ 0.316338] ESI: dbaf4dfc EDI: 00000000 EBP: db439e3c ESP: db439e0c [ 0.317171] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00210046 [ 0.318067] CR0: 80050033 CR2: ffffffff CR3: 01da6000 CR4: 00040690 [ 0.318901] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 0.319697] DR6: fffe0ff0 DR7: 00000400 [ 0.320211] Call Trace: [ 0.320527] <IRQ> [ 0.320823] __lock_acquire+0x5a/0x1580 [ 0.321312] ? mark_lock+0x44b/0x5e0 [ 0.321804] ? __lock_acquire+0xd6b/0x1580 [ 0.322327] ? pvclock_clocksource_read+0xae/0x1c0 [ 0.322949] lock_acquire+0x82/0x170 [ 0.323430] ? scheduler_tick+0x46/0x130 [ 0.323968] update_rq_clock+0xbe/0x230 [ 0.324475] ? scheduler_tick+0x46/0x130 [ 0.325043] ? prandom_u32+0x1b/0x30 [ 0.325518] scheduler_tick+0x46/0x130 [ 0.326038] update_process_times+0x36/0x40 [ 0.326585] tick_periodic+0x35/0xc0 [ 0.327092] tick_handle_periodic+0x1d/0x70 [ 0.327635] timer_interrupt+0xd/0x20 [ 0.328154] __handle_irq_event_percpu+0x75/0x410 [ 0.328786] handle_irq_event_percpu+0x26/0x60 [ 0.329367] handle_irq_event+0x29/0x50 [ 0.329910] ? irq_set_chained_handler_and_data+0x70/0x70 [ 0.330643] handle_level_irq+0x7a/0x110 [ 0.331219] handle_irq+0x121/0x160 [ 0.331674] </IRQ> [ 0.332005] do_IRQ+0x48/0x110 [ 0.332425] common_interrupt+0xec/0x100 [ 0.332970] EIP: _raw_spin_unlock_irqrestore+0x2c/0x50 [ 0.333626] Code: e5 56 53 89 c6 89 d3 8d 40 10 8b 4d 04 ba 01 00 00 00 e8 27 cc 96 ff 89 f0 e8 a0 1d 97 ff f6 c7 02 74 1b e8 76 15 9e ff 53 9d <64> ff 0d d0 57 c5 c1 5b 5e 5d c3 89 f6 8d bc 27 00 00 00 00 53 9d [ 0.336275] EAX: c1a8ac80 EBX: 00200246 ECX: 0001056c EDX: 00000001 [ 0.337164] ESI: db420264 EDI: c1a9b440 EBP: c1a83f18 ESP: c1a83f10 [ 0.337986] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00200246 [ 0.338901] ? tracing_release+0x11b/0x190 [ 0.339439] ? kmsg_dump_get_buffer+0x48/0x3a0 [ 0.340007] __setup_irq+0x42b/0x6f0 [ 0.340479] setup_irq+0x70/0xd0 [ 0.340930] hpet_time_init+0x1d/0x2e [ 0.341429] x86_late_time_init+0x9/0x16 [ 0.341972] start_kernel+0x414/0x491 [ 0.342454] i386_start_kernel+0x8f/0x93 [ 0.343003] startup_32_smp+0x15f/0x170 [ 0.343507] irq event stamp: 3500 [ 0.343974] hardirqs last enabled at (3497): [<c1767dfa>] _raw_spin_unlock_irqrestore+0x2a/0x50 [ 0.345124] hardirqs last disabled at (3498): [<c100167d>] trace_hardirqs_off_thunk+0xc/0x1f [ 0.346225] softirqs last enabled at (3500): [<c108001c>] _local_bh_enable+0x4c/0x70 [ 0.347295] softirqs last disabled at (3499): [<c1080d00>] irq_enter+0x50/0x70 [ 0.348297] ---[ end trace 04c6066979bd8a05 ]--- To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email Thanks, lkp

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LKP November 2018