From: kernel test robot <oliver.sang@intel.com>
To: Vincent Guittot <vincent.guittot@linaro.org>
Cc: <oe-lkp@lists.linux.dev>, <lkp@intel.com>,
<linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
<aubrey.li@linux.intel.com>, <yu.c.chen@intel.com>,
<oliver.sang@intel.com>
Subject: [linus:master] [sched/fair] 15257cc2f9: stress-ng.sigrt.ops_per_sec 8.0% improvement
Date: Thu, 12 Feb 2026 21:59:12 +0800 [thread overview]
Message-ID: <202602122113.ef9298c3-lkp@intel.com> (raw)
Hello,
kernel test robot noticed a 8.0% improvement of stress-ng.sigrt.ops_per_sec on:
commit: 15257cc2f905dbf5813c0bfdd3c15885f28093c4 ("sched/fair: Revert force wakeup preemption")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
testcase: stress-ng
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 224 threads 2 sockets Intel(R) Xeon(R) Platinum 8480CTDX (Sapphire Rapids) with 256G memory
parameters:
nr_threads: 100%
testtime: 60s
test: sigrt
cpufreq_governor: performance
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260212/202602122113.ef9298c3-lkp@intel.com
=========================================================================================
compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
gcc-14/performance/x86_64-rhel-9.4/100%/debian-13-x86_64-20250902.cgz/lkp-spr-r02/sigrt/stress-ng/60s
commit:
4f70f106bc ("sched/fair: Disable scheduler feature NEXT_BUDDY")
15257cc2f9 ("sched/fair: Revert force wakeup preemption")
4f70f106bca1a56b 15257cc2f905dbf5813c0bfdd3c
---------------- ---------------------------
%stddev %change %stddev
\ | \
7521030 ± 16% -45.9% 4071714 ± 14% cpuidle..usage
1778 ± 20% -51.3% 866.50 ± 31% perf-c2c.DRAM.local
1.68 ± 15% -0.6 1.04 ± 18% turbostat.C1E%
0.47 ± 3% +0.1 0.53 ± 4% mpstat.cpu.all.irq%
10.39 ± 12% -1.9 8.47 ± 8% mpstat.cpu.all.usr%
887.66 ± 2% +100.4% 1778 ± 2% vmstat.procs.r
5768162 -30.4% 4016564 vmstat.system.cs
2494804 ± 8% -12.8% 2176354 ± 4% meminfo.Active
2494788 ± 8% -12.8% 2176338 ± 4% meminfo.Active(anon)
161957 ± 3% -24.0% 123128 ± 15% meminfo.Mapped
1467515 ± 14% -21.8% 1147100 ± 8% meminfo.Shmem
624246 ± 8% -13.1% 542505 ± 4% proc-vmstat.nr_active_anon
1292900 ± 3% -6.3% 1210843 proc-vmstat.nr_file_pages
145668 -1.2% 143902 proc-vmstat.nr_kernel_stack
40502 ± 2% -24.7% 30482 ± 15% proc-vmstat.nr_mapped
367446 ± 13% -22.3% 285390 ± 7% proc-vmstat.nr_shmem
48398 -4.2% 46351 proc-vmstat.nr_slab_reclaimable
624246 ± 8% -13.1% 542505 ± 4% proc-vmstat.nr_zone_active_anon
101289 ± 3% +258.0% 362606 ± 2% stress-ng.sigrt.nanosecs_between_sigqueue_and_sigwaitinfo_completion
2.109e+08 +6.8% 2.252e+08 stress-ng.sigrt.ops
3550220 +8.0% 3832626 stress-ng.sigrt.ops_per_sec
1.391e+08 -63.7% 50478067 stress-ng.time.involuntary_context_switches
565845 +14.8% 649440 ± 2% stress-ng.time.minor_page_faults
11582 +2.9% 11922 stress-ng.time.system_time
1367 ± 12% -18.1% 1119 ± 9% stress-ng.time.user_time
2.106e+08 -8.1% 1.934e+08 stress-ng.time.voluntary_context_switches
1228025 ± 8% -36.3% 782452 ± 23% sched_debug.cfs_rq:/.avg_vruntime.stddev
251.33 ± 10% -23.7% 191.85 ± 21% sched_debug.cfs_rq:/.util_avg.avg
1345 ± 13% -16.1% 1129 ± 4% sched_debug.cfs_rq:/.util_avg.max
1226071 ± 8% -36.2% 782377 ± 23% sched_debug.cfs_rq:/.zero_vruntime.stddev
105.26 ± 10% -37.1% 66.17 ± 38% sched_debug.cpu.clock.stddev
798317 -30.5% 555027 sched_debug.cpu.nr_switches.avg
1127713 ± 5% -30.6% 782727 ± 6% sched_debug.cpu.nr_switches.max
150870 ± 7% -27.2% 109891 ± 12% sched_debug.cpu.nr_switches.stddev
3.50 ± 16% -30.9% 2.42 ± 20% sched_debug.cpu.nr_uninterruptible.avg
14867143 ± 4% -11.6% 13144218 perf-stat.i.cache-misses
1.783e+08 ± 4% -9.0% 1.622e+08 ± 4% perf-stat.i.cache-references
5878928 -30.4% 4093415 perf-stat.i.context-switches
44760 ± 6% +58.1% 70778 ± 12% perf-stat.i.cpu-migrations
26.31 -29.9% 18.44 perf-stat.i.metric.K/sec
17967 +4.0% 18691 perf-stat.i.minor-faults
17968 +4.0% 18691 perf-stat.i.page-faults
0.19 ± 5% -12.6% 0.17 ± 7% perf-stat.overall.MPKI
44065 ± 6% +14.1% 50294 perf-stat.overall.cycles-between-cache-misses
13997205 ± 5% -12.4% 12260391 perf-stat.ps.cache-misses
1.698e+08 ± 5% -10.9% 1.514e+08 ± 5% perf-stat.ps.cache-references
5760534 -30.6% 3996103 perf-stat.ps.context-switches
37802 ± 7% +51.5% 57253 ± 11% perf-stat.ps.cpu-migrations
1.08 ± 13% +280.6% 4.10 ± 27% perf-sched.sch_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
5677 ± 8% +97.5% 11210 ± 31% perf-sched.sch_delay.max.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
1.08 ± 13% +280.6% 4.10 ± 27% perf-sched.total_sch_delay.average.ms
5677 ± 8% +97.5% 11210 ± 31% perf-sched.total_sch_delay.max.ms
10.95 ± 6% +139.4% 26.21 ± 29% perf-sched.total_wait_and_delay.average.ms
2783337 ± 17% -18.2% 2277663 perf-sched.total_wait_and_delay.count.ms
11357 ± 8% +92.4% 21849 ± 30% perf-sched.total_wait_and_delay.max.ms
9.87 ± 6% +124.0% 22.11 ± 30% perf-sched.total_wait_time.average.ms
6008 ± 8% +85.9% 11172 ± 30% perf-sched.total_wait_time.max.ms
10.95 ± 6% +139.4% 26.21 ± 29% perf-sched.wait_and_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
2783337 ± 17% -18.2% 2277663 perf-sched.wait_and_delay.count.[unknown].[unknown].[unknown].[unknown].[unknown]
11357 ± 8% +92.4% 21849 ± 30% perf-sched.wait_and_delay.max.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
9.87 ± 6% +124.0% 22.11 ± 30% perf-sched.wait_time.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
6008 ± 8% +85.9% 11172 ± 30% perf-sched.wait_time.max.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
18.97 -2.4 16.55 perf-profile.calltrace.cycles-pp.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigqueue
3.16 -2.3 0.88 ± 2% perf-profile.calltrace.cycles-pp.__schedule.schedule.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe
3.19 -2.3 0.91 ± 2% perf-profile.calltrace.cycles-pp.schedule.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigqueue
60.66 -1.2 59.44 perf-profile.calltrace.cycles-pp.sigqueue
2.38 ± 2% -1.1 1.24 ± 3% perf-profile.calltrace.cycles-pp.pick_task_fair.pick_next_task_fair.__pick_next_task.__schedule.schedule
2.57 ± 6% -0.7 1.84 ± 13% perf-profile.calltrace.cycles-pp.arch_exit_to_user_mode_prepare.do_syscall_64.entry_SYSCALL_64_after_hwframe.stress_run
2.54 ± 6% -0.7 1.81 ± 13% perf-profile.calltrace.cycles-pp.switch_fpu_return.arch_exit_to_user_mode_prepare.do_syscall_64.entry_SYSCALL_64_after_hwframe.stress_run
2.27 ± 6% -0.6 1.63 ± 12% perf-profile.calltrace.cycles-pp.restore_fpregs_from_fpstate.switch_fpu_return.arch_exit_to_user_mode_prepare.do_syscall_64.entry_SYSCALL_64_after_hwframe
2.55 ± 5% -0.3 2.22 ± 7% perf-profile.calltrace.cycles-pp.stress_sighandler_nop
1.69 ± 8% -0.3 1.39 ± 6% perf-profile.calltrace.cycles-pp.x64_setup_rt_frame.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.59 ± 5% -0.3 1.32 ± 8% perf-profile.calltrace.cycles-pp._copy_from_user.__x64_sys_rt_sigqueueinfo.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigqueue
1.55 ± 9% -0.3 1.29 ± 6% perf-profile.calltrace.cycles-pp.get_sigframe.x64_setup_rt_frame.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64
1.45 -0.2 1.30 ± 3% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe
1.44 ± 2% -0.1 1.29 ± 3% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.72 ± 3% -0.1 0.62 perf-profile.calltrace.cycles-pp.switch_mm_irqs_off.__schedule.schedule.schedule_hrtimeout_range_clock.do_sigtimedwait
0.89 ± 2% -0.1 0.81 ± 2% perf-profile.calltrace.cycles-pp.__x64_sys_rt_sigtimedwait.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.89 ± 2% -0.1 0.81 ± 2% perf-profile.calltrace.cycles-pp.do_sigtimedwait.__x64_sys_rt_sigtimedwait.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.96 ± 2% +0.1 1.02 perf-profile.calltrace.cycles-pp.recalc_sigpending.dequeue_signal.do_sigtimedwait.__x64_sys_rt_sigtimedwait.do_syscall_64
1.35 ± 2% +0.2 1.53 ± 2% perf-profile.calltrace.cycles-pp.dequeue_entity.dequeue_entities.dequeue_task_fair.try_to_block_task.__schedule
0.76 ± 4% +0.2 0.97 ± 5% perf-profile.calltrace.cycles-pp.kmem_cache_alloc_noprof.__send_signal_locked.do_send_sig_info.kill_pid_info_type.__x64_sys_rt_sigqueueinfo
8.08 ± 3% +0.5 8.57 perf-profile.calltrace.cycles-pp.schedule_hrtimeout_range_clock.do_sigtimedwait.__x64_sys_rt_sigtimedwait.do_syscall_64.entry_SYSCALL_64_after_hwframe
7.56 ± 3% +0.6 8.19 perf-profile.calltrace.cycles-pp.schedule.schedule_hrtimeout_range_clock.do_sigtimedwait.__x64_sys_rt_sigtimedwait.do_syscall_64
7.43 ± 2% +0.7 8.08 perf-profile.calltrace.cycles-pp.__schedule.schedule.schedule_hrtimeout_range_clock.do_sigtimedwait.__x64_sys_rt_sigtimedwait
1.80 ± 3% +0.9 2.67 ± 4% perf-profile.calltrace.cycles-pp.try_to_block_task.__schedule.schedule.schedule_hrtimeout_range_clock.do_sigtimedwait
1.74 ± 2% +0.9 2.61 ± 4% perf-profile.calltrace.cycles-pp.dequeue_entities.dequeue_task_fair.try_to_block_task.__schedule.schedule
1.78 ± 3% +0.9 2.65 ± 4% perf-profile.calltrace.cycles-pp.dequeue_task_fair.try_to_block_task.__schedule.schedule.schedule_hrtimeout_range_clock
38.76 +1.7 40.48 perf-profile.calltrace.cycles-pp.__x64_sys_rt_sigqueueinfo.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigqueue
36.55 +2.0 38.59 perf-profile.calltrace.cycles-pp.kill_pid_info_type.__x64_sys_rt_sigqueueinfo.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigqueue
36.10 +2.1 38.16 perf-profile.calltrace.cycles-pp.do_send_sig_info.kill_pid_info_type.__x64_sys_rt_sigqueueinfo.do_syscall_64.entry_SYSCALL_64_after_hwframe
34.74 +2.2 36.92 perf-profile.calltrace.cycles-pp.__send_signal_locked.do_send_sig_info.kill_pid_info_type.__x64_sys_rt_sigqueueinfo.do_syscall_64
31.74 ± 2% +2.3 34.05 perf-profile.calltrace.cycles-pp.stress_run
28.05 +2.4 30.41 ± 2% perf-profile.calltrace.cycles-pp.sig_get_ucounts.__send_signal_locked.do_send_sig_info.kill_pid_info_type.__x64_sys_rt_sigqueueinfo
28.02 +2.4 30.38 ± 2% perf-profile.calltrace.cycles-pp.inc_rlimit_get_ucounts.sig_get_ucounts.__send_signal_locked.do_send_sig_info.kill_pid_info_type
12.70 +2.4 15.14 perf-profile.calltrace.cycles-pp.__sigqueue_free.dequeue_signal.get_signal.arch_do_signal_or_restart.exit_to_user_mode_loop
12.69 +2.4 15.13 perf-profile.calltrace.cycles-pp.dec_rlimit_put_ucounts.__sigqueue_free.dequeue_signal.get_signal.arch_do_signal_or_restart
28.11 +2.7 30.80 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.stress_run
28.12 +2.7 30.81 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.stress_run
13.90 +2.8 16.68 perf-profile.calltrace.cycles-pp.get_signal.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe
13.69 +2.8 16.48 perf-profile.calltrace.cycles-pp.dequeue_signal.get_signal.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64
0.00 +2.8 2.82 ± 4% perf-profile.calltrace.cycles-pp.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.stress_run
0.00 +2.9 2.86 ± 4% perf-profile.calltrace.cycles-pp.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.stress_run
10.76 ± 2% -1.7 9.04 perf-profile.children.cycles-pp.__schedule
10.80 ± 2% -1.7 9.12 perf-profile.children.cycles-pp.schedule
4.52 ± 2% -1.4 3.12 ± 4% perf-profile.children.cycles-pp.__pick_next_task
4.42 ± 2% -1.4 3.02 ± 4% perf-profile.children.cycles-pp.pick_next_task_fair
60.92 -1.3 59.66 perf-profile.children.cycles-pp.sigqueue
2.87 ± 4% -0.9 1.92 ± 12% perf-profile.children.cycles-pp.switch_fpu_return
2.40 ± 2% -0.9 1.47 ± 3% perf-profile.children.cycles-pp.pick_task_fair
3.11 ± 4% -0.9 2.18 ± 11% perf-profile.children.cycles-pp.arch_exit_to_user_mode_prepare
2.38 ± 5% -0.6 1.76 ± 12% perf-profile.children.cycles-pp.restore_fpregs_from_fpstate
1.12 ± 7% -0.5 0.62 ± 3% perf-profile.children.cycles-pp.__switch_to
1.18 ± 3% -0.5 0.73 ± 6% perf-profile.children.cycles-pp.__dequeue_entity
1.17 ± 2% -0.4 0.81 perf-profile.children.cycles-pp.switch_mm_irqs_off
0.74 ± 4% -0.3 0.41 ± 3% perf-profile.children.cycles-pp.prepare_task_switch
1.44 ± 2% -0.3 1.15 ± 2% perf-profile.children.cycles-pp.update_curr
0.36 ± 37% -0.3 0.10 ± 57% perf-profile.children.cycles-pp.common_startup_64
0.36 ± 37% -0.3 0.10 ± 57% perf-profile.children.cycles-pp.cpu_startup_entry
0.36 ± 37% -0.3 0.10 ± 57% perf-profile.children.cycles-pp.do_idle
1.86 ± 6% -0.2 1.61 ± 8% perf-profile.children.cycles-pp._copy_from_user
0.34 ± 37% -0.2 0.10 ± 57% perf-profile.children.cycles-pp.start_secondary
0.26 ± 37% -0.2 0.06 ± 75% perf-profile.children.cycles-pp.cpuidle_idle_call
0.51 ± 3% -0.2 0.31 ± 3% perf-profile.children.cycles-pp.__pick_eevdf
0.85 ± 3% -0.2 0.66 ± 5% perf-profile.children.cycles-pp.set_next_entity
0.23 ± 35% -0.2 0.06 ± 74% perf-profile.children.cycles-pp.cpuidle_enter
0.23 ± 35% -0.2 0.06 ± 74% perf-profile.children.cycles-pp.cpuidle_enter_state
0.69 ± 6% -0.1 0.54 ± 4% perf-profile.children.cycles-pp.update_se
0.49 ± 4% -0.1 0.35 ± 3% perf-profile.children.cycles-pp.__enqueue_entity
2.17 ± 2% -0.1 2.05 perf-profile.children.cycles-pp.dequeue_entity
0.38 ± 11% -0.1 0.27 ± 8% perf-profile.children.cycles-pp._raw_spin_lock
0.40 ± 17% -0.1 0.30 ± 16% perf-profile.children.cycles-pp.__switch_to_asm
0.38 ± 11% -0.1 0.29 ± 8% perf-profile.children.cycles-pp.raw_spin_rq_lock_nested
0.29 -0.1 0.20 perf-profile.children.cycles-pp.wakeup_preempt
0.29 ± 5% -0.1 0.20 ± 5% perf-profile.children.cycles-pp.___perf_sw_event
0.24 -0.1 0.16 ± 2% perf-profile.children.cycles-pp.os_xsave
0.15 ± 3% -0.1 0.08 ± 19% perf-profile.children.cycles-pp.finish_task_switch
0.15 ± 3% -0.1 0.08 ± 4% perf-profile.children.cycles-pp.save_fpregs_to_fpstate
0.30 ± 4% -0.1 0.22 ± 4% perf-profile.children.cycles-pp.__calc_delta
0.40 ± 7% -0.1 0.33 ± 7% perf-profile.children.cycles-pp.prepare_signal
0.22 ± 2% -0.1 0.16 ± 2% perf-profile.children.cycles-pp.check_preempt_wakeup_fair
0.17 ± 11% -0.1 0.12 ± 8% perf-profile.children.cycles-pp.send_signal_locked
0.44 ± 2% -0.0 0.40 ± 6% perf-profile.children.cycles-pp.handle_internal_command
0.44 ± 2% -0.0 0.40 ± 6% perf-profile.children.cycles-pp.main
0.44 ± 2% -0.0 0.40 ± 6% perf-profile.children.cycles-pp.run_builtin
0.13 ± 28% -0.0 0.08 ± 21% perf-profile.children.cycles-pp.__libc_current_sigrtmax
0.08 ± 21% -0.0 0.04 ± 71% perf-profile.children.cycles-pp.task_active_pid_ns
0.15 ± 15% -0.0 0.10 ± 10% perf-profile.children.cycles-pp.do_perf_trace_sched_wakeup_template
0.20 ± 5% -0.0 0.16 ± 8% perf-profile.children.cycles-pp.__task_pid_nr_ns
0.08 ± 4% -0.0 0.04 ± 44% perf-profile.children.cycles-pp.css_rstat_updated
0.12 ± 5% -0.0 0.09 ± 5% perf-profile.children.cycles-pp.__cgroup_account_cputime
0.14 ± 2% -0.0 0.10 ± 4% perf-profile.children.cycles-pp.choose_new_asid
0.10 -0.0 0.08 ± 6% perf-profile.children.cycles-pp.sched_clock_cpu
0.11 ± 3% -0.0 0.09 ± 5% perf-profile.children.cycles-pp.update_rq_clock
0.06 ± 7% -0.0 0.04 ± 44% perf-profile.children.cycles-pp.strnlen
0.09 ± 5% -0.0 0.07 perf-profile.children.cycles-pp.__set_next_task_fair
0.09 ± 4% -0.0 0.07 ± 7% perf-profile.children.cycles-pp.from_kuid_munged
0.11 ± 6% -0.0 0.09 perf-profile.children.cycles-pp.vruntime_eligible
0.08 -0.0 0.06 perf-profile.children.cycles-pp.native_sched_clock
0.09 -0.0 0.07 perf-profile.children.cycles-pp.sched_clock
0.09 ± 6% -0.0 0.07 ± 6% perf-profile.children.cycles-pp.update_curr_dl_se
0.08 ± 6% -0.0 0.06 ± 9% perf-profile.children.cycles-pp.map_id_range_up
0.05 ± 8% +0.0 0.06 ± 7% perf-profile.children.cycles-pp.signal_setup_done
0.28 ± 5% +0.1 0.34 ± 6% perf-profile.children.cycles-pp.__account_obj_stock
0.22 +0.1 0.28 perf-profile.children.cycles-pp.avg_vruntime
0.44 ± 5% +0.1 0.50 ± 2% perf-profile.children.cycles-pp.__update_load_avg_se
0.13 ± 10% +0.1 0.20 ± 8% perf-profile.children.cycles-pp.pick_next_task
0.31 ± 4% +0.1 0.39 ± 5% perf-profile.children.cycles-pp.obj_cgroup_charge_account
0.44 ± 4% +0.1 0.54 ± 4% perf-profile.children.cycles-pp.__memcg_slab_post_alloc_hook
0.00 +0.1 0.10 ± 4% perf-profile.children.cycles-pp.set_next_buddy
0.57 ± 9% +0.1 0.67 ± 4% perf-profile.children.cycles-pp.copy_fpstate_to_sigframe
1.68 +0.1 1.78 perf-profile.children.cycles-pp.recalc_sigpending
0.50 ± 3% +0.1 0.61 ± 3% perf-profile.children.cycles-pp.__memcg_slab_free_hook
0.14 ± 2% +0.1 0.25 ± 3% perf-profile.children.cycles-pp.__rb_insert_augmented
0.13 ± 5% +0.1 0.26 ± 2% perf-profile.children.cycles-pp.syscall_return_via_sysret
0.12 ± 4% +0.1 0.26 ± 3% perf-profile.children.cycles-pp.update_entity_lag
0.48 ± 6% +0.1 0.61 ± 18% perf-profile.children.cycles-pp.generic_perform_write
0.48 ± 6% +0.1 0.62 ± 18% perf-profile.children.cycles-pp.ksys_write
0.07 ± 47% +0.2 0.22 ± 7% perf-profile.children.cycles-pp.__slab_free
0.77 ± 4% +0.2 0.98 ± 5% perf-profile.children.cycles-pp.kmem_cache_alloc_noprof
0.76 ± 4% +0.3 1.05 ± 2% perf-profile.children.cycles-pp.kmem_cache_free
0.26 +0.3 0.56 ± 2% perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack
19.71 +0.4 20.06 perf-profile.children.cycles-pp.exit_to_user_mode_loop
3.02 ± 2% +0.4 3.40 ± 3% perf-profile.children.cycles-pp.dequeue_entities
0.48 ± 16% +0.4 0.92 ± 31% perf-profile.children.cycles-pp.update_cfs_group
8.08 ± 3% +0.5 8.57 perf-profile.children.cycles-pp.schedule_hrtimeout_range_clock
1.81 ± 3% +0.9 2.68 ± 4% perf-profile.children.cycles-pp.try_to_block_task
1.78 ± 3% +0.9 2.66 ± 4% perf-profile.children.cycles-pp.dequeue_task_fair
91.02 +1.5 92.57 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
90.33 +1.7 92.02 perf-profile.children.cycles-pp.do_syscall_64
38.76 +1.7 40.49 perf-profile.children.cycles-pp.__x64_sys_rt_sigqueueinfo
36.56 +2.0 38.60 perf-profile.children.cycles-pp.kill_pid_info_type
36.10 +2.1 38.16 perf-profile.children.cycles-pp.do_send_sig_info
34.75 +2.2 36.93 perf-profile.children.cycles-pp.__send_signal_locked
31.74 ± 2% +2.3 34.05 perf-profile.children.cycles-pp.stress_run
28.02 +2.4 30.38 ± 2% perf-profile.children.cycles-pp.inc_rlimit_get_ucounts
28.06 +2.4 30.41 ± 2% perf-profile.children.cycles-pp.sig_get_ucounts
26.67 +2.7 29.36 perf-profile.children.cycles-pp.__sigqueue_free
26.66 +2.7 29.35 perf-profile.children.cycles-pp.dec_rlimit_put_ucounts
13.94 +2.8 16.70 perf-profile.children.cycles-pp.get_signal
16.23 +2.8 19.00 perf-profile.children.cycles-pp.arch_do_signal_or_restart
29.21 +3.1 32.26 perf-profile.children.cycles-pp.dequeue_signal
2.38 ± 5% -0.6 1.76 ± 12% perf-profile.self.cycles-pp.restore_fpregs_from_fpstate
1.09 ± 7% -0.5 0.60 ± 3% perf-profile.self.cycles-pp.__switch_to
1.00 ± 3% -0.4 0.64 ± 6% perf-profile.self.cycles-pp.__dequeue_entity
1.02 ± 2% -0.3 0.70 perf-profile.self.cycles-pp.switch_mm_irqs_off
1.42 ± 8% -0.3 1.16 ± 6% perf-profile.self.cycles-pp.__schedule
0.46 ± 5% -0.2 0.21 ± 3% perf-profile.self.cycles-pp.prepare_task_switch
1.84 ± 7% -0.2 1.60 ± 8% perf-profile.self.cycles-pp._copy_from_user
0.49 ± 5% -0.2 0.24 ± 15% perf-profile.self.cycles-pp.switch_fpu_return
0.41 ± 5% -0.2 0.21 ± 8% perf-profile.self.cycles-pp.pick_next_task_fair
0.45 ± 3% -0.2 0.25 ± 4% perf-profile.self.cycles-pp.__pick_eevdf
0.43 ± 5% -0.1 0.29 ± 4% perf-profile.self.cycles-pp.__enqueue_entity
0.60 ± 17% -0.1 0.46 ± 5% perf-profile.self.cycles-pp.sigqueue
0.18 ± 3% -0.1 0.07 perf-profile.self.cycles-pp.exit_to_user_mode_loop
0.33 ± 10% -0.1 0.22 ± 7% perf-profile.self.cycles-pp._raw_spin_lock
0.40 ± 17% -0.1 0.30 ± 17% perf-profile.self.cycles-pp.__switch_to_asm
0.37 ± 10% -0.1 0.28 ± 8% perf-profile.self.cycles-pp.update_curr
0.24 -0.1 0.16 ± 2% perf-profile.self.cycles-pp.os_xsave
0.17 ± 2% -0.1 0.10 ± 5% perf-profile.self.cycles-pp.check_preempt_wakeup_fair
0.29 ± 4% -0.1 0.21 ± 4% perf-profile.self.cycles-pp.__calc_delta
0.15 ± 2% -0.1 0.08 ± 6% perf-profile.self.cycles-pp.save_fpregs_to_fpstate
0.40 ± 8% -0.1 0.32 ± 7% perf-profile.self.cycles-pp.prepare_signal
0.20 ± 16% -0.1 0.14 ± 11% perf-profile.self.cycles-pp.enqueue_task_fair
0.31 ± 4% -0.1 0.26 ± 8% perf-profile.self.cycles-pp.update_load_avg
0.30 ± 2% -0.1 0.24 ± 5% perf-profile.self.cycles-pp.pick_task_fair
0.08 ± 23% -0.0 0.03 ± 70% perf-profile.self.cycles-pp.task_active_pid_ns
0.12 ± 4% -0.0 0.08 ± 6% perf-profile.self.cycles-pp.set_next_entity
0.08 ± 7% -0.0 0.03 ± 70% perf-profile.self.cycles-pp.css_rstat_updated
0.20 ± 4% -0.0 0.16 ± 9% perf-profile.self.cycles-pp.__task_pid_nr_ns
0.06 -0.0 0.02 ± 99% perf-profile.self.cycles-pp.strnlen
0.14 ± 3% -0.0 0.10 ± 3% perf-profile.self.cycles-pp.choose_new_asid
0.15 ± 9% -0.0 0.12 ± 5% perf-profile.self.cycles-pp.___perf_sw_event
0.20 ± 3% -0.0 0.17 ± 7% perf-profile.self.cycles-pp.update_se
0.09 ± 5% -0.0 0.07 ± 7% perf-profile.self.cycles-pp.__set_next_task_fair
0.09 ± 7% -0.0 0.07 ± 8% perf-profile.self.cycles-pp.__x64_sys_rt_sigtimedwait
0.09 ± 4% -0.0 0.07 perf-profile.self.cycles-pp.vruntime_eligible
0.07 ± 5% -0.0 0.05 perf-profile.self.cycles-pp.ttwu_do_activate
0.12 ± 4% -0.0 0.10 ± 8% perf-profile.self.cycles-pp.dequeue_signal
0.08 ± 4% -0.0 0.06 perf-profile.self.cycles-pp.native_sched_clock
0.06 -0.0 0.04 ± 44% perf-profile.self.cycles-pp.send_signal_locked
0.07 ± 5% -0.0 0.06 ± 8% perf-profile.self.cycles-pp.map_id_range_up
0.06 -0.0 0.05 perf-profile.self.cycles-pp.try_to_wake_up
0.13 ± 3% +0.0 0.15 ± 2% perf-profile.self.cycles-pp.__memcg_slab_post_alloc_hook
0.18 +0.0 0.20 ± 2% perf-profile.self.cycles-pp.__restore_fpregs_from_user
0.06 +0.0 0.08 ± 9% perf-profile.self.cycles-pp.get_signal
0.11 ± 4% +0.0 0.12 ± 4% perf-profile.self.cycles-pp.do_perf_trace_sched_stat_runtime
0.09 ± 4% +0.0 0.11 ± 5% perf-profile.self.cycles-pp.place_entity
0.08 ± 5% +0.0 0.12 ± 4% perf-profile.self.cycles-pp.obj_cgroup_charge_account
0.18 ± 5% +0.0 0.22 ± 4% perf-profile.self.cycles-pp.kmem_cache_free
0.17 ± 6% +0.0 0.21 ± 10% perf-profile.self.cycles-pp.reweight_entity
0.28 ± 4% +0.0 0.33 ± 5% perf-profile.self.cycles-pp.__account_obj_stock
0.00 +0.1 0.05 perf-profile.self.cycles-pp.kill_pid_info_type
0.20 +0.1 0.26 perf-profile.self.cycles-pp.avg_vruntime
0.06 ± 6% +0.1 0.12 ± 4% perf-profile.self.cycles-pp.update_entity_lag
0.41 ± 5% +0.1 0.48 ± 2% perf-profile.self.cycles-pp.__update_load_avg_se
0.32 ± 5% +0.1 0.41 ± 7% perf-profile.self.cycles-pp.kmem_cache_alloc_noprof
0.32 ± 3% +0.1 0.42 ± 4% perf-profile.self.cycles-pp.__memcg_slab_free_hook
0.08 ± 8% +0.1 0.18 ± 8% perf-profile.self.cycles-pp.pick_next_task
0.00 +0.1 0.10 ± 4% perf-profile.self.cycles-pp.set_next_buddy
1.67 +0.1 1.77 perf-profile.self.cycles-pp.recalc_sigpending
0.13 ± 3% +0.1 0.25 ± 4% perf-profile.self.cycles-pp.__rb_insert_augmented
0.05 +0.1 0.18 ± 9% perf-profile.self.cycles-pp.put_prev_entity
0.10 ± 3% +0.1 0.25 ± 2% perf-profile.self.cycles-pp.syscall_return_via_sysret
0.07 ± 47% +0.2 0.22 ± 7% perf-profile.self.cycles-pp.__slab_free
0.25 +0.2 0.46 ± 2% perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack
0.48 ± 16% +0.4 0.92 ± 32% perf-profile.self.cycles-pp.update_cfs_group
28.02 +2.4 30.37 ± 2% perf-profile.self.cycles-pp.inc_rlimit_get_ucounts
26.66 +2.7 29.35 perf-profile.self.cycles-pp.dec_rlimit_put_ucounts
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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