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X-OriginatorOrg: intel.com Hello, kernel test robot noticed a 30.1% regression of stress-ng.timermix.ops_per_sec on: commit: 2889243848560b6b0211aba401d2fc122070ba2f ("hrtimer: Re-arrange hrtimer_interrupt()") https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git sched/hrtick testcase: stress-ng config: x86_64-rhel-9.4 compiler: gcc-14 test machine: 64 threads 2 sockets Intel(R) Xeon(R) Gold 6346 CPU @ 3.10GHz (Ice Lake) with 256G memory parameters: nr_threads: 100% testtime: 60s test: timermix cpufreq_governor: performance If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202603102229.74b9dee4-lkp@intel.com Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260310/202603102229.74b9dee4-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-icl-2sp8/timermix/stress-ng/60s commit: 8e10f6b81a ("hrtimer: Add hrtimer_rearm tracepoint") 2889243848 ("hrtimer: Re-arrange hrtimer_interrupt()") 8e10f6b81afbf60e 2889243848560b6b0211aba401d ---------------- --------------------------- %stddev %change %stddev \ | \ 232123 ± 7% -78.8% 49228 ± 9% stress-ng.time.involuntary_context_switches 12201 +11.1% 13550 stress-ng.time.minor_page_faults 5205 -32.9% 3490 ± 2% stress-ng.time.percent_of_cpu_this_job_got 2849 -33.0% 1909 ± 2% stress-ng.time.system_time 276.59 -32.7% 186.28 ± 2% stress-ng.time.user_time 3067734 ± 5% +37.1% 4205161 ± 8% stress-ng.time.voluntary_context_switches 117087 -38.8% 71712 ± 2% stress-ng.timermix.CLOCK_BOOTTIME_ticks_per_sec 117127 -38.8% 71656 ± 2% stress-ng.timermix.CLOCK_MONOTONIC_ticks_per_sec 978.58 -39.3% 593.62 stress-ng.timermix.CLOCK_PROCESS_CPUTIME_ID_ticks_per_sec 117335 -38.7% 71961 stress-ng.timermix.CLOCK_REALTIME_ticks_per_sec 117066 -38.8% 71645 ± 2% stress-ng.timermix.CLOCK_TAI_ticks_per_sec 978.68 -39.3% 593.67 stress-ng.timermix.CLOCK_THREAD_CPUTIME_ID_ticks_per_sec 10.68 ± 2% -15.3% 9.05 ± 10% stress-ng.timermix.ITIMER_PROF_ticks_per_sec 1263 ± 2% -35.2% 818.29 ± 52% stress-ng.timermix.ITIMER_REAL_ticks_per_sec 9.68 ± 2% -15.1% 8.21 ± 11% stress-ng.timermix.ITIMER_VIRTUAL_ticks_per_sec 1.809e+09 -30.1% 1.264e+09 ± 2% stress-ng.timermix.ops 30158157 -30.1% 21078045 ± 2% stress-ng.timermix.ops_per_sec 59.00 ± 24% -42.7% 33.83 ± 27% perf-c2c.DRAM.local 2972 ± 9% +39.3% 4140 ± 6% uptime.idle 1.45e+08 ± 11% +812.5% 1.323e+09 ± 4% cpuidle..time 2492037 ± 7% +118.6% 5447859 ± 5% cpuidle..usage 2.68 ± 28% +29.9 32.60 ± 5% mpstat.cpu.all.idle% 16.10 -4.1 12.04 ± 2% mpstat.cpu.all.irq% 0.00 ± 21% +0.0 0.01 ± 12% mpstat.cpu.all.soft% 72.82 -23.7 49.15 ± 2% mpstat.cpu.all.sys% 8.39 -2.2 6.20 mpstat.cpu.all.usr% 5.67 ± 19% +847.1% 53.67 ± 5% mpstat.max_utilization.seconds 5.69 ± 12% +510.7% 34.76 ± 4% vmstat.cpu.id 86.13 -31.3% 59.19 ± 2% vmstat.cpu.sy 4175472 +9.8% 4585895 ± 2% vmstat.memory.cache 62.71 -32.1% 42.60 ± 2% vmstat.procs.r 99312 ± 6% +36.2% 135233 ± 8% vmstat.system.cs 28455658 -29.9% 19958244 ± 3% vmstat.system.in 1.58 ± 2% -99.7% 0.00 ± 46% perf-sched.sch_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 1.58 ± 2% -99.7% 0.00 ± 46% perf-sched.total_sch_delay.average.ms 88.93 ± 9% -98.2% 1.61 ± 29% perf-sched.total_wait_and_delay.average.ms 6699 ± 9% +8221.6% 557489 ± 28% perf-sched.total_wait_and_delay.count.ms 87.36 ± 9% -98.2% 1.60 ± 29% perf-sched.total_wait_time.average.ms 88.93 ± 9% -98.2% 1.61 ± 29% perf-sched.wait_and_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 6699 ± 9% +8221.6% 557489 ± 28% perf-sched.wait_and_delay.count.[unknown].[unknown].[unknown].[unknown].[unknown] 87.36 ± 9% -98.2% 1.60 ± 29% perf-sched.wait_time.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 3410 -27.3% 2477 ± 2% turbostat.Avg_MHz 96.56 -26.8 69.72 ± 2% turbostat.Busy% 3.62 ± 11% +26.9 30.49 ± 5% turbostat.C1% 3.16 ± 13% +572.0% 21.21 ± 9% turbostat.CPU%c1 0.58 +4.9% 0.61 turbostat.IPC 1.807e+09 -30.4% 1.257e+09 ± 3% turbostat.IRQ 113.70 ± 5% -60.5 53.16 ± 13% turbostat.PKG_% 404.64 -8.2% 371.64 turbostat.PkgWatt 0.02 ± 33% +114.8% 0.05 ± 17% perf-stat.i.MPKI 2.909e+10 -26.6% 2.136e+10 ± 2% perf-stat.i.branch-instructions 0.36 +0.4 0.80 ± 12% perf-stat.i.branch-miss-rate% 92789452 -13.2% 80563145 perf-stat.i.branch-misses 13395966 ± 7% -19.0% 10855385 ± 2% perf-stat.i.cache-references 106482 ± 6% +37.3% 146175 ± 9% perf-stat.i.context-switches 1.71 -4.2% 1.63 perf-stat.i.cpi 2.219e+11 -28.8% 1.58e+11 ± 2% perf-stat.i.cpu-cycles 1654 ± 20% -80.8% 317.81 ± 2% perf-stat.i.cpu-migrations 1.294e+11 -26.0% 9.585e+10 ± 2% perf-stat.i.instructions 0.59 +5.8% 0.62 perf-stat.i.ipc 1.68 ± 6% +30.1% 2.18 ± 10% perf-stat.i.metric.K/sec 0.31 +0.1 0.37 ± 2% perf-stat.overall.branch-miss-rate% 1.71 -3.7% 1.65 perf-stat.overall.cpi 0.58 +3.9% 0.61 perf-stat.overall.ipc 2.864e+10 -25.5% 2.133e+10 ± 2% perf-stat.ps.branch-instructions 90036611 -13.5% 77841621 perf-stat.ps.branch-misses 13516993 ± 6% -22.0% 10547777 ± 2% perf-stat.ps.cache-references 102237 ± 6% +35.7% 138762 ± 8% perf-stat.ps.context-switches 2.184e+11 -27.7% 1.579e+11 ± 2% perf-stat.ps.cpu-cycles 1592 ± 19% -80.8% 304.93 ± 3% perf-stat.ps.cpu-migrations 1.275e+11 -24.9% 9.574e+10 ± 2% perf-stat.ps.instructions 7.842e+12 -25.2% 5.869e+12 ± 2% perf-stat.total.instructions 34.10 ± 12% -25.9 8.18 ± 3% perf-profile.calltrace.cycles-pp.sigpending 29.70 ± 13% -25.7 3.96 ± 5% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.sigpending 29.34 ± 14% -25.7 3.62 ± 6% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending 22.76 ± 16% -22.7 0.10 ±223% perf-profile.calltrace.cycles-pp.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending 22.62 ± 16% -22.5 0.10 ±223% perf-profile.calltrace.cycles-pp.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending 33.06 -16.9 16.21 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 28.31 -16.0 12.29 perf-profile.calltrace.cycles-pp.get_sigframe.x64_setup_rt_frame.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64 18.06 ± 2% -11.2 6.89 perf-profile.calltrace.cycles-pp.copy_fpstate_to_sigframe.get_sigframe.x64_setup_rt_frame.arch_do_signal_or_restart.exit_to_user_mode_loop 8.72 ± 3% -8.7 0.00 perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.copy_fpstate_to_sigframe.get_sigframe.x64_setup_rt_frame.arch_do_signal_or_restart 4.88 ± 4% -1.7 3.15 perf-profile.calltrace.cycles-pp.save_xstate_epilog.get_sigframe.x64_setup_rt_frame.arch_do_signal_or_restart.exit_to_user_mode_loop 1.72 ± 2% -1.4 0.28 ±100% perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.get_sigframe.x64_setup_rt_frame.arch_do_signal_or_restart.exit_to_user_mode_loop 7.86 ± 10% -1.0 6.84 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe 7.57 ± 10% -1.0 6.57 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.78 ± 3% -1.0 0.79 perf-profile.calltrace.cycles-pp.__get_user_nocheck_8.copy_fpstate_to_sigframe.get_sigframe.x64_setup_rt_frame.arch_do_signal_or_restart 18.06 -0.7 17.32 perf-profile.calltrace.cycles-pp.stress_timermix_timer_action 6.24 -0.4 5.81 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.stress_timermix_timer_action 6.20 -0.4 5.77 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.stress_timermix_timer_action 5.58 -0.4 5.16 perf-profile.calltrace.cycles-pp.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.stress_timermix_timer_action 0.97 ± 23% -0.4 0.56 perf-profile.calltrace.cycles-pp.__put_user_nocheck_8.copy_fpstate_to_sigframe.get_sigframe.x64_setup_rt_frame.arch_do_signal_or_restart 5.33 -0.4 4.92 perf-profile.calltrace.cycles-pp.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.stress_timermix_timer_action 0.89 ± 23% -0.3 0.55 perf-profile.calltrace.cycles-pp.__put_user_nocheck_4.copy_fpstate_to_sigframe.get_sigframe.x64_setup_rt_frame.arch_do_signal_or_restart 6.23 -0.3 5.90 perf-profile.calltrace.cycles-pp.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe 3.36 -0.3 3.06 perf-profile.calltrace.cycles-pp.fpu__clear_user_states.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.94 -0.1 1.82 perf-profile.calltrace.cycles-pp.clear_bhb_loop 1.52 ± 5% -0.1 1.40 perf-profile.calltrace.cycles-pp.restore_sigcontext.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.62 -0.1 1.52 perf-profile.calltrace.cycles-pp.__get_user_nocheck_8.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe 2.16 -0.1 2.08 perf-profile.calltrace.cycles-pp.__x64_sys_rt_sigpending.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending 2.64 -0.1 2.58 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.stress_timermix_timer_action 1.98 -0.1 1.92 perf-profile.calltrace.cycles-pp.clear_bhb_loop.sigpending 0.99 -0.1 0.94 perf-profile.calltrace.cycles-pp.set_current_blocked.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.30 -0.0 1.25 perf-profile.calltrace.cycles-pp.signal_setup_done.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.64 ± 2% -0.0 0.60 perf-profile.calltrace.cycles-pp.fpregs_mark_activate.fpu__clear_user_states.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64 1.12 -0.0 1.08 perf-profile.calltrace.cycles-pp._copy_from_user.restore_sigcontext.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.56 -0.0 0.54 perf-profile.calltrace.cycles-pp.arch_exit_to_user_mode_prepare.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending 0.64 ± 9% +0.1 0.77 perf-profile.calltrace.cycles-pp.__get_user_nocheck_8.save_xstate_epilog.get_sigframe.x64_setup_rt_frame.arch_do_signal_or_restart 0.59 ± 9% +0.3 0.92 ± 10% perf-profile.calltrace.cycles-pp._copy_to_user.copy_siginfo_to_user.x64_setup_rt_frame.arch_do_signal_or_restart.exit_to_user_mode_loop 0.36 ± 70% +0.5 0.84 perf-profile.calltrace.cycles-pp.__hrtimer_start_range_ns.hrtimer_start_range_ns.posixtimer_deliver_signal.dequeue_signal.get_signal 0.00 +0.5 0.52 perf-profile.calltrace.cycles-pp.native_sched_clock.sched_clock.sched_clock_cpu.irqtime_account_irq.__irq_exit_rcu 0.00 +0.6 0.57 perf-profile.calltrace.cycles-pp.__put_user_nocheck_8.save_xstate_epilog.get_sigframe.x64_setup_rt_frame.arch_do_signal_or_restart 0.00 +0.6 0.57 ± 6% perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.6 0.57 ± 2% perf-profile.calltrace.cycles-pp.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.get_signal.arch_do_signal_or_restart.exit_to_user_mode_loop 0.00 +0.6 0.58 perf-profile.calltrace.cycles-pp.__remove_hrtimer.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt 0.00 +0.6 0.63 perf-profile.calltrace.cycles-pp.sched_clock.sched_clock_cpu.irqtime_account_irq.__irq_exit_rcu.sysvec_apic_timer_interrupt 0.08 ±223% +0.6 0.72 perf-profile.calltrace.cycles-pp.__get_user_nocheck_4.check_xstate_in_sigframe.__fpu_restore_sig.fpu__restore_sig.restore_sigcontext 0.08 ±223% +0.6 0.72 perf-profile.calltrace.cycles-pp._raw_spin_lock.posixtimer_deliver_signal.dequeue_signal.get_signal.arch_do_signal_or_restart 0.00 +0.6 0.65 perf-profile.calltrace.cycles-pp.irqtime_account_irq.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irq.get_signal 0.00 +0.7 0.71 perf-profile.calltrace.cycles-pp.sched_clock_cpu.irqtime_account_irq.__irq_exit_rcu.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt 0.00 +0.8 0.84 ± 2% perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.get_signal.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64 0.00 +0.9 0.88 perf-profile.calltrace.cycles-pp.complete_signal.posixtimer_send_sigqueue.posix_timer_fn.__hrtimer_run_queues.hrtimer_interrupt 0.00 +0.9 0.93 perf-profile.calltrace.cycles-pp.irqtime_account_irq.__irq_exit_rcu.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irq 0.00 +1.0 0.99 perf-profile.calltrace.cycles-pp.__hrtimer_next_event_base.hrtimer_update_next_event.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt 0.00 +1.3 1.27 perf-profile.calltrace.cycles-pp.__irq_exit_rcu.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irq.get_signal 2.26 ± 3% +1.3 3.55 perf-profile.calltrace.cycles-pp.posix_timer_fn.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt 0.58 ± 8% +1.4 1.97 perf-profile.calltrace.cycles-pp.native_apic_msr_eoi.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irq 0.00 +1.5 1.49 perf-profile.calltrace.cycles-pp.hrtimer_update_next_event.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt 0.00 +1.6 1.56 perf-profile.calltrace.cycles-pp.ktime_get_update_offsets_now.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt 3.64 ± 7% +1.6 5.29 perf-profile.calltrace.cycles-pp.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt 1.34 ± 17% +1.7 3.01 perf-profile.calltrace.cycles-pp.clockevents_program_event.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt 1.12 ± 25% +1.7 2.82 perf-profile.calltrace.cycles-pp.posixtimer_send_sigqueue.posix_timer_fn.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt 4.86 ± 9% +2.9 7.76 perf-profile.calltrace.cycles-pp.restore_sigcontext.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe.stress_timermix_itimer_action 4.94 ± 9% +3.0 7.88 perf-profile.calltrace.cycles-pp.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe.stress_timermix_itimer_action 5.12 ± 2% +7.5 12.62 perf-profile.calltrace.cycles-pp.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irq 6.45 ± 2% +9.1 15.56 perf-profile.calltrace.cycles-pp.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irq.get_signal 7.62 ± 2% +10.4 18.04 perf-profile.calltrace.cycles-pp.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irq.get_signal.arch_do_signal_or_restart 12.20 ± 2% +15.5 27.70 perf-profile.calltrace.cycles-pp._raw_spin_unlock_irq.get_signal.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64 25.74 +17.6 43.33 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 14.91 ± 2% +18.7 33.65 perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irq.get_signal.arch_do_signal_or_restart.exit_to_user_mode_loop 36.59 ± 8% +24.4 60.98 perf-profile.calltrace.cycles-pp.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.stress_timermix_itimer_action 36.80 ± 8% +24.6 61.39 perf-profile.calltrace.cycles-pp.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.stress_timermix_itimer_action 41.81 ± 8% +27.6 69.41 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.stress_timermix_itimer_action 41.82 ± 8% +27.6 69.43 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.stress_timermix_itimer_action 41.91 ± 8% +27.7 69.58 perf-profile.calltrace.cycles-pp.stress_timermix_itimer_action 34.62 ± 11% -25.9 8.69 ± 2% perf-profile.children.cycles-pp.sigpending 33.66 -17.0 16.63 perf-profile.children.cycles-pp.x64_setup_rt_frame 29.22 -16.6 12.66 perf-profile.children.cycles-pp.get_sigframe 19.90 -12.6 7.28 perf-profile.children.cycles-pp.copy_fpstate_to_sigframe 5.40 ± 2% -2.1 3.32 perf-profile.children.cycles-pp.save_xstate_epilog 5.00 -1.8 3.17 perf-profile.children.cycles-pp.__get_user_nocheck_8 2.42 ± 2% -1.2 1.18 perf-profile.children.cycles-pp.__put_user_nocheck_4 2.31 -1.1 1.18 perf-profile.children.cycles-pp.__put_user_nocheck_8 13.88 -0.7 13.23 perf-profile.children.cycles-pp.stress_timermix_timer_action 1.23 -0.6 0.61 perf-profile.children.cycles-pp.rep_stos_alternative 14.48 -0.5 14.01 perf-profile.children.cycles-pp.__x64_sys_rt_sigreturn 0.97 ± 2% -0.4 0.59 perf-profile.children.cycles-pp.__local_bh_enable_ip 3.58 ± 2% -0.3 3.25 perf-profile.children.cycles-pp.fpu__clear_user_states 0.57 -0.3 0.30 ± 5% perf-profile.children.cycles-pp.fpu__alloc_mathframe 9.50 -0.2 9.26 perf-profile.children.cycles-pp.restore_sigcontext 6.77 -0.2 6.58 perf-profile.children.cycles-pp.clockevents_program_event 7.79 -0.2 7.61 perf-profile.children.cycles-pp.fpu__restore_sig 8.73 -0.2 8.55 perf-profile.children.cycles-pp.native_irq_return_iret 3.97 -0.2 3.79 perf-profile.children.cycles-pp.clear_bhb_loop 9.92 -0.2 9.77 perf-profile.children.cycles-pp.dequeue_signal 0.26 ± 4% -0.1 0.11 ± 4% perf-profile.children.cycles-pp.get_xsave_addr_user 5.33 -0.1 5.21 perf-profile.children.cycles-pp.restore_fpregs_from_user 2.60 -0.1 2.50 perf-profile.children.cycles-pp.native_apic_msr_eoi 4.09 -0.1 3.99 perf-profile.children.cycles-pp.posix_timer_fn 8.64 -0.1 8.54 perf-profile.children.cycles-pp.posixtimer_deliver_signal 4.40 -0.1 4.30 perf-profile.children.cycles-pp.__restore_fpregs_from_user 3.34 -0.1 3.25 perf-profile.children.cycles-pp.posixtimer_send_sigqueue 1.90 -0.1 1.83 perf-profile.children.cycles-pp.irqtime_account_irq 6.10 -0.1 6.03 perf-profile.children.cycles-pp.__hrtimer_run_queues 2.29 -0.1 2.22 perf-profile.children.cycles-pp.__x64_sys_rt_sigpending 0.79 -0.1 0.71 perf-profile.children.cycles-pp.ktime_expiry_to_cycles 1.56 -0.1 1.49 perf-profile.children.cycles-pp.__irq_exit_rcu 1.06 -0.1 1.00 perf-profile.children.cycles-pp.set_current_blocked 2.09 -0.1 2.03 perf-profile.children.cycles-pp._raw_spin_lock_irq 3.47 -0.1 3.40 perf-profile.children.cycles-pp.its_return_thunk 2.25 -0.1 2.20 perf-profile.children.cycles-pp.__fpu_restore_sig 1.20 ± 2% -0.1 1.14 perf-profile.children.cycles-pp.recalc_sigpending 1.39 -0.1 1.34 perf-profile.children.cycles-pp.signal_setup_done 1.45 -0.1 1.40 perf-profile.children.cycles-pp.sched_clock_cpu 2.14 -0.0 2.09 perf-profile.children.cycles-pp._copy_from_user 2.07 -0.0 2.02 perf-profile.children.cycles-pp.check_xstate_in_sigframe 1.09 -0.0 1.04 perf-profile.children.cycles-pp.fpregs_mark_activate 1.50 -0.0 1.46 perf-profile.children.cycles-pp.common_hrtimer_rearm 2.08 -0.0 2.04 perf-profile.children.cycles-pp.entry_SYSCALL_64 1.27 -0.0 1.23 perf-profile.children.cycles-pp.sched_clock 0.47 ± 2% -0.0 0.44 ± 2% perf-profile.children.cycles-pp.collect_signal 1.09 -0.0 1.06 perf-profile.children.cycles-pp.complete_signal 0.77 -0.0 0.74 perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack 0.77 -0.0 0.74 perf-profile.children.cycles-pp.__get_user_nocheck_4 1.05 -0.0 1.03 perf-profile.children.cycles-pp.arch_exit_to_user_mode_prepare 0.70 -0.0 0.68 perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore 0.45 -0.0 0.43 perf-profile.children.cycles-pp.ktime_get_with_offset 0.31 -0.0 0.29 perf-profile.children.cycles-pp.__check_object_size 0.22 ± 2% -0.0 0.21 ± 2% perf-profile.children.cycles-pp.syscall_return_via_sysret 0.22 -0.0 0.21 perf-profile.children.cycles-pp.__irqentry_text_end 0.22 -0.0 0.21 perf-profile.children.cycles-pp._raw_spin_unlock 0.16 ± 2% +0.0 0.18 ± 2% perf-profile.children.cycles-pp.rb_erase 0.10 ± 3% +0.0 0.12 ± 4% perf-profile.children.cycles-pp.tick_nohz_handler 0.00 +0.1 0.09 perf-profile.children.cycles-pp.__hrtimer_reprogram 0.00 +0.4 0.44 ± 12% perf-profile.children.cycles-pp.poll_idle 0.00 +0.5 0.48 ± 11% perf-profile.children.cycles-pp.cpuidle_enter_state 0.00 +0.5 0.48 ± 11% perf-profile.children.cycles-pp.cpuidle_enter 0.00 +0.5 0.48 ± 9% perf-profile.children.cycles-pp.start_secondary 0.00 +0.5 0.48 ± 11% perf-profile.children.cycles-pp.cpuidle_idle_call 0.00 +0.5 0.49 ± 11% perf-profile.children.cycles-pp.common_startup_64 0.00 +0.5 0.49 ± 11% perf-profile.children.cycles-pp.cpu_startup_entry 0.00 +0.5 0.49 ± 11% perf-profile.children.cycles-pp.do_idle 0.56 +0.6 1.17 perf-profile.children.cycles-pp.__hrtimer_next_event_base 0.88 +0.9 1.80 perf-profile.children.cycles-pp.ktime_get_update_offsets_now 0.85 +0.9 1.78 perf-profile.children.cycles-pp.hrtimer_update_next_event 27.92 +1.3 29.20 perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt 18.65 +1.5 20.16 perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt 15.68 +1.6 17.32 perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt 12.58 +1.6 14.22 perf-profile.children.cycles-pp.hrtimer_interrupt 14.73 +17.1 31.82 perf-profile.children.cycles-pp._raw_spin_unlock_irq 26.30 +17.5 43.81 perf-profile.children.cycles-pp.get_signal 41.91 ± 8% +27.7 69.58 perf-profile.children.cycles-pp.stress_timermix_itimer_action 6.86 -2.3 4.53 perf-profile.self.cycles-pp.copy_fpstate_to_sigframe 3.61 -0.6 3.00 perf-profile.self.cycles-pp.__get_user_nocheck_8 1.78 -0.4 1.36 perf-profile.self.cycles-pp.get_sigframe 1.46 -0.4 1.09 perf-profile.self.cycles-pp.__put_user_nocheck_4 1.58 ± 3% -0.4 1.23 perf-profile.self.cycles-pp.save_xstate_epilog 1.44 -0.3 1.10 perf-profile.self.cycles-pp.__put_user_nocheck_8 2.93 -0.2 2.73 perf-profile.self.cycles-pp.fpu__clear_user_states 8.72 -0.2 8.54 perf-profile.self.cycles-pp.native_irq_return_iret 3.93 -0.2 3.75 perf-profile.self.cycles-pp.clear_bhb_loop 0.57 -0.2 0.39 ± 2% perf-profile.self.cycles-pp.rep_stos_alternative 6.00 -0.1 5.88 perf-profile.self.cycles-pp.clockevents_program_event 0.63 -0.1 0.52 perf-profile.self.cycles-pp.__local_bh_enable_ip 2.58 -0.1 2.48 perf-profile.self.cycles-pp.native_apic_msr_eoi 4.36 -0.1 4.27 perf-profile.self.cycles-pp.__restore_fpregs_from_user 0.73 -0.1 0.66 perf-profile.self.cycles-pp.ktime_expiry_to_cycles 0.29 -0.1 0.22 ± 2% perf-profile.self.cycles-pp.fpu__alloc_mathframe 1.96 -0.1 1.90 perf-profile.self.cycles-pp._raw_spin_lock_irq 2.09 -0.0 2.04 perf-profile.self.cycles-pp._copy_from_user 0.12 ± 5% -0.0 0.07 ± 6% perf-profile.self.cycles-pp.get_xsave_addr_user 0.52 -0.0 0.48 perf-profile.self.cycles-pp.__x64_sys_rt_sigreturn 0.87 -0.0 0.83 perf-profile.self.cycles-pp.fpregs_mark_activate 1.27 -0.0 1.23 perf-profile.self.cycles-pp.sigpending 0.73 -0.0 0.70 perf-profile.self.cycles-pp.copy_siginfo_to_user 1.21 -0.0 1.18 perf-profile.self.cycles-pp.do_syscall_64 0.45 ± 2% -0.0 0.42 ± 2% perf-profile.self.cycles-pp.collect_signal 0.41 -0.0 0.38 perf-profile.self.cycles-pp.sysvec_apic_timer_interrupt 0.75 -0.0 0.72 perf-profile.self.cycles-pp.__get_user_nocheck_4 0.81 -0.0 0.78 perf-profile.self.cycles-pp.posixtimer_send_sigqueue 0.44 -0.0 0.41 perf-profile.self.cycles-pp.irqtime_account_irq 0.31 ± 2% -0.0 0.28 perf-profile.self.cycles-pp.__irq_exit_rcu 0.74 -0.0 0.72 perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack 0.51 -0.0 0.49 perf-profile.self.cycles-pp.error_entry 0.55 -0.0 0.53 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe 0.38 -0.0 0.36 perf-profile.self.cycles-pp.restore_fpregs_from_user 0.49 -0.0 0.47 perf-profile.self.cycles-pp.restore_sigcontext 0.46 -0.0 0.44 perf-profile.self.cycles-pp.asm_sysvec_apic_timer_interrupt 0.34 -0.0 0.33 perf-profile.self.cycles-pp.__sysvec_apic_timer_interrupt 0.44 -0.0 0.42 perf-profile.self.cycles-pp.ktime_get_with_offset 0.77 -0.0 0.75 perf-profile.self.cycles-pp.posixtimer_deliver_signal 0.22 -0.0 0.20 ± 2% perf-profile.self.cycles-pp.sched_clock 0.45 -0.0 0.43 perf-profile.self.cycles-pp.__x64_sys_rt_sigpending 0.22 ± 2% -0.0 0.21 ± 2% perf-profile.self.cycles-pp.syscall_return_via_sysret 0.12 +0.0 0.13 ± 2% perf-profile.self.cycles-pp.rb_erase 0.17 +0.0 0.19 ± 2% perf-profile.self.cycles-pp.hrtimer_reprogram 0.58 +0.1 0.64 perf-profile.self.cycles-pp.arch_do_signal_or_restart 0.00 +0.1 0.07 perf-profile.self.cycles-pp.__hrtimer_reprogram 0.58 +0.1 0.69 perf-profile.self.cycles-pp.hrtimer_interrupt 1.38 +0.2 1.55 perf-profile.self.cycles-pp.get_signal 0.26 +0.3 0.55 perf-profile.self.cycles-pp.hrtimer_update_next_event 0.00 +0.4 0.44 ± 12% perf-profile.self.cycles-pp.poll_idle 0.52 +0.5 1.06 perf-profile.self.cycles-pp.__hrtimer_next_event_base 0.86 +0.9 1.76 perf-profile.self.cycles-pp.ktime_get_update_offsets_now 4.31 +4.1 8.42 perf-profile.self.cycles-pp._raw_spin_unlock_irq 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