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Message-ID: <202507161052.ed3213f4-lkp@intel.com>
Date: Wed, 16 Jul 2025 16:50:36 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Zecheng Li <zecheng@...gle.com>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, <linux-kernel@...r.kernel.org>,
<aubrey.li@...ux.intel.com>, <yu.c.chen@...el.com>, Ingo Molnar
<mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>, Juri Lelli
<juri.lelli@...hat.com>, Vincent Guittot <vincent.guittot@...aro.org>,
Dietmar Eggemann <dietmar.eggemann@....com>, Steven Rostedt
<rostedt@...dmis.org>, Ben Segall <bsegall@...gle.com>, Mel Gorman
<mgorman@...e.de>, Valentin Schneider <vschneid@...hat.com>, Xu Liu
<xliuprof@...gle.com>, Blake Jones <blakejones@...gle.com>, Namhyung Kim
<namhyung@...nel.org>, Josh Don <joshdon@...gle.com>, Madadi Vineeth Reddy
<vineethr@...ux.ibm.com>, Zecheng Li <zecheng@...gle.com>,
<oliver.sang@...el.com>
Subject: Re: [PATCH v3 3/3] sched/fair: Allocate both cfs_rq and sched_entity
with per-cpu
Hello,
kernel test robot noticed a 8.8% improvement of stress-ng.session.ops_per_sec on:
commit: ac215b990e70e247344522e1736fd878cb3c25b6 ("[PATCH v3 3/3] sched/fair: Allocate both cfs_rq and sched_entity with per-cpu")
url: https://github.com/intel-lab-lkp/linux/commits/Zecheng-Li/sched-fair-Co-locate-cfs_rq-and-sched_entity/20250702-050528
patch link: https://lore.kernel.org/all/20250701210230.2985885-4-zecheng@google.com/
patch subject: [PATCH v3 3/3] sched/fair: Allocate both cfs_rq and sched_entity with per-cpu
testcase: stress-ng
config: x86_64-rhel-9.4
compiler: gcc-12
test machine: 192 threads 2 sockets Intel(R) Xeon(R) 6740E CPU @ 2.4GHz (Sierra Forest) with 256G memory
parameters:
nr_threads: 100%
testtime: 60s
test: session
cpufreq_governor: performance
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250716/202507161052.ed3213f4-lkp@intel.com
=========================================================================================
compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
gcc-12/performance/x86_64-rhel-9.4/100%/debian-12-x86_64-20240206.cgz/lkp-srf-2sp3/session/stress-ng/60s
commit:
10d69ea6ba ("sched/fair: Remove task_group->se pointer array")
ac215b990e ("sched/fair: Allocate both cfs_rq and sched_entity with per-cpu")
10d69ea6ba7641d0 ac215b990e70e247344522e1736
---------------- ---------------------------
%stddev %change %stddev
\ | \
0.00 ± 33% -0.0 0.00 mpstat.cpu.all.iowait%
4.46 -1.9 2.60 mpstat.cpu.all.soft%
119077 -40.8% 70550 numa-vmstat.node0.nr_slab_unreclaimable
108930 ± 2% -47.0% 57734 numa-vmstat.node1.nr_slab_unreclaimable
182080 +6.2% 193357 vmstat.system.cs
523378 +2.8% 538219 vmstat.system.in
492392 ± 2% +13.0% 556325 ± 4% sched_debug.cfs_rq:/.avg_vruntime.min
492392 ± 2% +13.0% 556325 ± 4% sched_debug.cfs_rq:/.min_vruntime.min
138.58 ± 5% -7.4% 128.29 ± 2% sched_debug.cfs_rq:/.util_est.stddev
472216 -40.6% 280726 numa-meminfo.node0.SUnreclaim
574944 ± 4% -37.1% 361520 ± 7% numa-meminfo.node0.Slab
432134 ± 2% -46.3% 231873 ± 2% numa-meminfo.node1.SUnreclaim
479462 ± 5% -37.2% 301105 ± 9% numa-meminfo.node1.Slab
10287656 -10.7% 9189229 meminfo.Memused
135165 +249.4% 472245 ± 2% meminfo.Percpu
904298 -43.4% 512235 meminfo.SUnreclaim
1054350 -37.2% 662242 meminfo.Slab
10568312 -11.6% 9345843 meminfo.max_used_kB
1207478 +8.7% 1312849 stress-ng.session.ops
20155 +8.8% 21919 stress-ng.session.ops_per_sec
1.019e+08 ± 2% +6.9% 1.09e+08 stress-ng.time.minor_page_faults
16524 +2.1% 16869 stress-ng.time.percent_of_cpu_this_job_got
9893 +2.1% 10097 stress-ng.time.system_time
4781984 +7.2% 5125238 stress-ng.time.voluntary_context_switches
481639 +2.6% 494200 proc-vmstat.nr_active_anon
1169838 +1.0% 1181222 proc-vmstat.nr_file_pages
41310 +2.1% 42196 proc-vmstat.nr_kernel_stack
279620 +4.1% 291007 proc-vmstat.nr_shmem
226450 -43.4% 128195 proc-vmstat.nr_slab_unreclaimable
481639 +2.6% 494200 proc-vmstat.nr_zone_active_anon
89251914 ± 3% +7.3% 95746015 ± 3% proc-vmstat.numa_hit
87248173 ± 3% +7.5% 93770181 ± 3% proc-vmstat.numa_local
1.169e+08 ± 2% -15.8% 98422922 ± 3% proc-vmstat.pgalloc_normal
1.024e+08 ± 2% +6.9% 1.095e+08 proc-vmstat.pgfault
1.161e+08 ± 2% -16.0% 97515011 ± 3% proc-vmstat.pgfree
0.73 +0.0 0.76 perf-stat.i.branch-miss-rate%
1.795e+08 +5.7% 1.897e+08 perf-stat.i.branch-misses
39.65 -2.8 36.83 perf-stat.i.cache-miss-rate%
1.485e+09 +7.2% 1.592e+09 perf-stat.i.cache-references
188846 +7.1% 202265 perf-stat.i.context-switches
4.35 -1.1% 4.30 perf-stat.i.cpi
50615 +8.6% 54987 perf-stat.i.cpu-migrations
18.17 +8.4% 19.69 perf-stat.i.metric.K/sec
1682096 ± 2% +6.7% 1795278 perf-stat.i.minor-faults
1682116 ± 2% +6.7% 1795306 perf-stat.i.page-faults
0.71 +0.0 0.74 perf-stat.overall.branch-miss-rate%
39.60 -2.9 36.74 perf-stat.overall.cache-miss-rate%
4.38 -1.1% 4.33 perf-stat.overall.cpi
0.23 +1.1% 0.23 perf-stat.overall.ipc
1.75e+08 +5.6% 1.847e+08 perf-stat.ps.branch-misses
1.454e+09 +6.9% 1.555e+09 perf-stat.ps.cache-references
184886 +6.9% 197661 perf-stat.ps.context-switches
49237 +8.5% 53411 perf-stat.ps.cpu-migrations
1646954 ± 2% +6.5% 1754401 perf-stat.ps.minor-faults
1646973 ± 2% +6.5% 1754428 perf-stat.ps.page-faults
0.14 ± 12% -100.0% 0.00 perf-sched.sch_delay.avg.ms.__cond_resched.__kmalloc_cache_node_noprof.alloc_fair_sched_group.sched_create_group.sched_autogroup_create_attach
1.86 ± 55% -95.6% 0.08 ± 56% perf-sched.sch_delay.avg.ms.__cond_resched.__kmalloc_node_noprof.alloc_slab_obj_exts.allocate_slab.___slab_alloc
0.07 ±115% -100.0% 0.00 perf-sched.sch_delay.avg.ms.__cond_resched.__kmalloc_noprof.alloc_fair_sched_group.sched_create_group.sched_autogroup_create_attach
0.03 ± 30% -89.1% 0.00 ± 30% perf-sched.sch_delay.avg.ms.__cond_resched.__put_anon_vma.unlink_anon_vmas.free_pgtables.exit_mmap
0.02 ± 43% -69.1% 0.01 ± 33% perf-sched.sch_delay.avg.ms.__cond_resched.__tlb_batch_free_encoded_pages.tlb_finish_mmu.exit_mmap.__mmput
0.47 ± 8% -16.7% 0.39 ± 5% perf-sched.sch_delay.avg.ms.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity
0.27 ± 47% -69.6% 0.08 ± 97% perf-sched.sch_delay.avg.ms.__cond_resched.__wait_for_common.wait_for_completion_state.kernel_clone.__x64_sys_vfork
0.26 ± 27% -40.1% 0.15 ± 7% perf-sched.sch_delay.avg.ms.__cond_resched.copy_page_range.dup_mmap.dup_mm.constprop
0.27 ± 16% -43.3% 0.15 ± 26% perf-sched.sch_delay.avg.ms.__cond_resched.down_write.anon_vma_clone.anon_vma_fork.dup_mmap
0.23 ± 10% -26.2% 0.17 ± 9% perf-sched.sch_delay.avg.ms.__cond_resched.down_write.dup_mmap.dup_mm.constprop
0.03 ± 41% -86.7% 0.00 ± 32% perf-sched.sch_delay.avg.ms.__cond_resched.down_write.unlink_anon_vmas.free_pgtables.exit_mmap
0.04 ± 69% -93.6% 0.00 ± 62% perf-sched.sch_delay.avg.ms.__cond_resched.down_write.unlink_file_vma_batch_process.unlink_file_vma_batch_add.free_pgtables
0.56 ± 49% -75.3% 0.14 ± 39% perf-sched.sch_delay.avg.ms.__cond_resched.kmem_cache_alloc_noprof.alloc_pid.copy_process.kernel_clone
0.25 ± 7% -21.0% 0.19 ± 8% perf-sched.sch_delay.avg.ms.__cond_resched.kmem_cache_alloc_noprof.anon_vma_fork.dup_mmap.dup_mm
0.43 ± 44% -86.3% 0.06 ± 55% perf-sched.sch_delay.avg.ms.__cond_resched.mutex_lock_killable.pcpu_alloc_noprof.mm_init.dup_mm
0.01 ± 76% +13586.7% 1.03 ± 72% perf-sched.sch_delay.avg.ms.__cond_resched.process_one_work.worker_thread.kthread.ret_from_fork
0.09 ± 44% -76.0% 0.02 ± 26% perf-sched.sch_delay.avg.ms.__cond_resched.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
0.39 ± 52% -75.9% 0.10 ± 20% perf-sched.sch_delay.avg.ms.__cond_resched.wp_page_copy.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
0.09 ± 21% -30.0% 0.06 ± 20% perf-sched.sch_delay.avg.ms.anon_pipe_read.fifo_pipe_read.vfs_read.ksys_read
0.02 ± 4% -47.3% 0.01 perf-sched.sch_delay.avg.ms.do_task_dead.do_exit.do_group_exit.__x64_sys_exit_group.x64_sys_call
0.20 -12.8% 0.17 ± 3% perf-sched.sch_delay.avg.ms.do_wait.kernel_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.22 ± 26% -52.3% 0.10 ± 29% perf-sched.sch_delay.avg.ms.schedule_hrtimeout_range_clock.poll_schedule_timeout.constprop.0.do_poll
0.02 ± 12% -55.8% 0.01 ± 16% perf-sched.sch_delay.avg.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.__put_anon_vma
0.07 ± 10% -24.5% 0.05 ± 14% perf-sched.sch_delay.avg.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.anon_vma_clone
0.07 ± 6% -22.6% 0.05 ± 13% perf-sched.sch_delay.avg.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.anon_vma_fork
0.01 ± 20% -57.3% 0.01 ± 6% perf-sched.sch_delay.avg.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.unlink_anon_vmas
0.10 ± 18% -27.5% 0.07 ± 10% perf-sched.sch_delay.avg.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
0.44 ± 4% -20.2% 0.35 ± 2% perf-sched.sch_delay.avg.ms.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
8.47 ± 85% -100.0% 0.00 perf-sched.sch_delay.max.ms.__cond_resched.__kmalloc_cache_node_noprof.alloc_fair_sched_group.sched_create_group.sched_autogroup_create_attach
10.95 ± 57% -95.9% 0.45 ± 59% perf-sched.sch_delay.max.ms.__cond_resched.__kmalloc_node_noprof.alloc_slab_obj_exts.allocate_slab.___slab_alloc
0.34 ±160% -100.0% 0.00 perf-sched.sch_delay.max.ms.__cond_resched.__kmalloc_noprof.alloc_fair_sched_group.sched_create_group.sched_autogroup_create_attach
17.30 ± 16% -86.0% 2.42 ± 65% perf-sched.sch_delay.max.ms.__cond_resched.__put_anon_vma.unlink_anon_vmas.free_pgtables.exit_mmap
8.99 ± 57% -81.2% 1.69 ± 22% perf-sched.sch_delay.max.ms.__cond_resched.__tlb_batch_free_encoded_pages.tlb_finish_mmu.exit_mmap.__mmput
36.94 ± 97% -90.9% 3.35 ± 9% perf-sched.sch_delay.max.ms.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity
0.67 ± 47% -75.4% 0.16 ±148% perf-sched.sch_delay.max.ms.__cond_resched.__wait_for_common.wait_for_completion_state.kernel_clone.__x64_sys_vfork
26.40 ± 89% -69.8% 7.96 ± 67% perf-sched.sch_delay.max.ms.__cond_resched.copy_page_range.dup_mmap.dup_mm.constprop
36.26 ± 33% -70.8% 10.58 ±109% perf-sched.sch_delay.max.ms.__cond_resched.down_write.anon_vma_clone.anon_vma_fork.dup_mmap
10.02 ± 42% -86.2% 1.38 ± 6% perf-sched.sch_delay.max.ms.__cond_resched.down_write.unlink_anon_vmas.free_pgtables.exit_mmap
11.63 ± 51% -92.3% 0.89 ± 39% perf-sched.sch_delay.max.ms.__cond_resched.down_write.unlink_file_vma_batch_process.unlink_file_vma_batch_add.free_pgtables
13.19 ± 50% -88.0% 1.58 ± 44% perf-sched.sch_delay.max.ms.__cond_resched.kmem_cache_alloc_noprof.alloc_pid.copy_process.kernel_clone
9.58 ± 68% -91.3% 0.83 ± 49% perf-sched.sch_delay.max.ms.__cond_resched.mutex_lock_killable.pcpu_alloc_noprof.mm_init.dup_mm
0.01 ± 83% +17570.0% 1.47 ± 76% perf-sched.sch_delay.max.ms.__cond_resched.process_one_work.worker_thread.kthread.ret_from_fork
13.57 ± 16% -89.9% 1.37 ± 65% perf-sched.sch_delay.max.ms.__cond_resched.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
13.09 ± 35% -80.8% 2.51 ± 59% perf-sched.sch_delay.max.ms.__cond_resched.wp_page_copy.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
23.68 ± 15% -82.9% 4.05 ± 33% perf-sched.sch_delay.max.ms.do_task_dead.do_exit.do_group_exit.__x64_sys_exit_group.x64_sys_call
3.16 ± 15% +26.9% 4.01 ± 7% perf-sched.sch_delay.max.ms.io_schedule.folio_wait_bit_common.filemap_fault.__do_fault
4.74 ±147% +499.9% 28.44 ± 59% perf-sched.sch_delay.max.ms.schedule_preempt_disabled.__mutex_lock.constprop.0.pcpu_alloc_noprof
22.00 ± 24% -86.8% 2.90 ± 43% perf-sched.sch_delay.max.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.__put_anon_vma
19.90 ± 9% -85.2% 2.95 ± 29% perf-sched.sch_delay.max.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.unlink_anon_vmas
26.25 ± 10% -75.7% 6.37 ± 12% perf-sched.sch_delay.max.ms.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
29.41 ± 22% -78.6% 6.29 ± 19% perf-sched.sch_delay.max.ms.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
0.13 ± 3% -14.3% 0.11 ± 3% perf-sched.total_sch_delay.average.ms
554.44 ± 80% -84.6% 85.42 ± 13% perf-sched.total_sch_delay.max.ms
2379 ± 19% +49.8% 3565 ± 24% perf-sched.total_wait_and_delay.max.ms
2379 ± 19% +49.8% 3564 ± 24% perf-sched.total_wait_time.max.ms
0.08 ± 30% -87.6% 0.01 ± 15% perf-sched.wait_and_delay.avg.ms.__cond_resched.__put_anon_vma.unlink_anon_vmas.free_pgtables.exit_mmap
4.97 ± 2% -8.4% 4.56 perf-sched.wait_and_delay.avg.ms.__cond_resched.kmem_cache_alloc_noprof.anon_vma_fork.dup_mmap.dup_mm
0.04 ± 4% -46.9% 0.02 ± 3% perf-sched.wait_and_delay.avg.ms.do_task_dead.do_exit.do_group_exit.__x64_sys_exit_group.x64_sys_call
0.10 ± 4% -33.6% 0.06 ± 4% perf-sched.wait_and_delay.avg.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.__put_anon_vma
0.08 ± 10% -35.0% 0.05 perf-sched.wait_and_delay.avg.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.unlink_anon_vmas
5676 ± 2% -10.9% 5057 perf-sched.wait_and_delay.count.__cond_resched.__put_anon_vma.unlink_anon_vmas.free_pgtables.exit_mmap
5076 -11.4% 4498 ± 2% perf-sched.wait_and_delay.count.__cond_resched.kmem_cache_alloc_noprof.anon_vma_fork.dup_mmap.dup_mm
1072 ± 15% -57.1% 460.33 ± 13% perf-sched.wait_and_delay.count.__cond_resched.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
4236 ± 8% +29.2% 5471 ± 10% perf-sched.wait_and_delay.count.io_schedule.folio_wait_bit_common.filemap_fault.__do_fault
102.00 ± 29% +39.7% 142.50 ± 15% perf-sched.wait_and_delay.count.schedule_hrtimeout_range_clock.poll_schedule_timeout.constprop.0.do_poll
2.17 ±223% +2.1e+05% 4619 ± 12% perf-sched.wait_and_delay.count.schedule_preempt_disabled.__mutex_lock.constprop.0.pcpu_alloc_noprof
11630 ± 5% -12.4% 10192 ± 7% perf-sched.wait_and_delay.count.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.__put_anon_vma
24971 ± 4% -9.2% 22682 ± 2% perf-sched.wait_and_delay.count.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.anon_vma_clone
22567 ± 2% -9.3% 20475 ± 2% perf-sched.wait_and_delay.count.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.unlink_anon_vmas
37.53 ± 12% -84.8% 5.69 ± 48% perf-sched.wait_and_delay.max.ms.__cond_resched.__put_anon_vma.unlink_anon_vmas.free_pgtables.exit_mmap
7.92 ±223% +839.2% 74.40 ± 30% perf-sched.wait_and_delay.max.ms.schedule_preempt_disabled.__mutex_lock.constprop.0.pcpu_alloc_noprof
45.50 ± 23% -86.0% 6.35 ± 35% perf-sched.wait_and_delay.max.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.__put_anon_vma
39.97 ± 9% -83.3% 6.69 ± 22% perf-sched.wait_and_delay.max.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.unlink_anon_vmas
4.05 ± 50% -77.4% 0.92 ± 64% perf-sched.wait_time.avg.ms.__cond_resched.__kmalloc_cache_node_noprof.__get_vm_area_node.__vmalloc_node_range_noprof.__vmalloc_node_noprof
0.01 ± 42% -100.0% 0.00 perf-sched.wait_time.avg.ms.__cond_resched.__kmalloc_cache_node_noprof.alloc_fair_sched_group.sched_create_group.sched_autogroup_create_attach
0.05 ± 29% -86.9% 0.01 ± 11% perf-sched.wait_time.avg.ms.__cond_resched.__put_anon_vma.unlink_anon_vmas.free_pgtables.exit_mmap
0.04 ± 30% -73.8% 0.01 ± 20% perf-sched.wait_time.avg.ms.__cond_resched.__tlb_batch_free_encoded_pages.tlb_finish_mmu.exit_mmap.__mmput
0.05 ± 34% -85.3% 0.01 ± 36% perf-sched.wait_time.avg.ms.__cond_resched.down_write.unlink_anon_vmas.free_pgtables.exit_mmap
0.07 ± 50% -89.2% 0.01 ± 27% perf-sched.wait_time.avg.ms.__cond_resched.down_write.unlink_file_vma_batch_process.unlink_file_vma_batch_add.free_pgtables
2.74 ± 49% +78.9% 4.90 ± 24% perf-sched.wait_time.avg.ms.__cond_resched.kmem_cache_alloc_noprof.mas_dup_build.constprop.0
1.52 ± 12% +32.6% 2.02 ± 14% perf-sched.wait_time.avg.ms.__cond_resched.kmem_cache_alloc_noprof.prepare_creds.copy_creds.copy_process
1.29 ± 9% -21.5% 1.01 ± 7% perf-sched.wait_time.avg.ms.__cond_resched.mutex_lock.perf_event_exit_task.do_exit.do_group_exit
3.12 ± 4% +9.4% 3.41 ± 3% perf-sched.wait_time.avg.ms.__cond_resched.mutex_lock_killable.pcpu_alloc_noprof.__percpu_counter_init_many.mm_init
0.02 ± 4% -48.1% 0.01 ± 4% perf-sched.wait_time.avg.ms.do_task_dead.do_exit.do_group_exit.__x64_sys_exit_group.x64_sys_call
0.55 ± 19% -38.1% 0.34 ± 41% perf-sched.wait_time.avg.ms.irqentry_exit_to_user_mode.asm_sysvec_reschedule_ipi.[unknown]
0.08 ± 4% -28.8% 0.06 ± 4% perf-sched.wait_time.avg.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.__put_anon_vma
0.06 ± 9% -29.7% 0.04 perf-sched.wait_time.avg.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.unlink_anon_vmas
34.86 ± 44% -80.5% 6.80 ± 49% perf-sched.wait_time.max.ms.__cond_resched.__kmalloc_cache_node_noprof.__get_vm_area_node.__vmalloc_node_range_noprof.__vmalloc_node_noprof
3.98 ± 62% -100.0% 0.00 perf-sched.wait_time.max.ms.__cond_resched.__kmalloc_cache_node_noprof.alloc_fair_sched_group.sched_create_group.sched_autogroup_create_attach
23.75 ± 25% -81.5% 4.40 ± 23% perf-sched.wait_time.max.ms.__cond_resched.__put_anon_vma.unlink_anon_vmas.free_pgtables.exit_mmap
12.62 ± 54% -83.7% 2.06 ± 20% perf-sched.wait_time.max.ms.__cond_resched.__tlb_batch_free_encoded_pages.tlb_finish_mmu.exit_mmap.__mmput
12.65 ± 29% -74.1% 3.27 ± 36% perf-sched.wait_time.max.ms.__cond_resched.down_write.unlink_anon_vmas.free_pgtables.exit_mmap
14.23 ± 33% -85.1% 2.12 ± 49% perf-sched.wait_time.max.ms.__cond_resched.down_write.unlink_file_vma_batch_process.unlink_file_vma_batch_add.free_pgtables
26.52 ± 54% -58.3% 11.06 ± 10% perf-sched.wait_time.max.ms.__cond_resched.kmem_cache_alloc_noprof.alloc_pid.copy_process.kernel_clone
21.46 ± 31% -79.3% 4.44 ± 50% perf-sched.wait_time.max.ms.__cond_resched.mutex_lock.perf_event_exit_task.do_exit.do_group_exit
36.27 ± 38% -61.4% 14.00 ± 27% perf-sched.wait_time.max.ms.__cond_resched.mutex_lock_killable.pcpu_alloc_noprof.__percpu_counter_init_many.mm_init
43.85 ± 20% -52.4% 20.88 ± 63% perf-sched.wait_time.max.ms.__cond_resched.uprobe_start_dup_mmap.dup_mm.constprop.0
1.21 ± 30% -65.9% 0.41 ± 86% perf-sched.wait_time.max.ms.exit_to_user_mode_loop.ret_from_fork.ret_from_fork_asm.[unknown]
3.06 ± 38% +816.6% 28.04 ± 89% perf-sched.wait_time.max.ms.io_schedule.folio_wait_bit_common.filemap_fault.__do_fault
11.39 ± 63% +393.7% 56.25 ± 18% perf-sched.wait_time.max.ms.schedule_preempt_disabled.__mutex_lock.constprop.0.pcpu_alloc_noprof
26.67 ± 14% -83.3% 4.45 ± 13% perf-sched.wait_time.max.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.__put_anon_vma
24.94 ± 26% -82.1% 4.48 ± 5% perf-sched.wait_time.max.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.unlink_anon_vmas
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.
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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