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a3ecc425-ea35-4187-30da-08de6a3eec80 X-MS-Exchange-CrossTenant-AuthSource: LV3PR11MB8603.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Feb 2026 13:59:22.5576 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: p3Ikyp842h1Z2mR4DIQu61FWhyyOL0BJjkDOlnYATFmnSc/5lQj/IwzfeX9Xn7BZXajgzZ+JA3Jl6EL9QsCQ4w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR11MB7947 X-OriginatorOrg: intel.com 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