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X-OriginatorOrg: intel.com Hello, kernel test robot noticed a 4.1% improvement of stress-ng.timermix.ops_per_sec on: commit: acc071343d29c2361619b05ad50ea3de9ef9a3ac ("posix-timers: Switch to hrtimer_start_expires_user()") 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) (Sapphire Rapids) with 128G memory parameters: nr_threads: 100% testtime: 60s test: timermix cpufreq_governor: performance Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260712/202607121506.f2debecc-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/igk-spr-2sp1/timermix/stress-ng/60s commit: cfb7fe3fdd ("posix-timers: Handle the timer_[re]arm() return value") acc071343d ("posix-timers: Switch to hrtimer_start_expires_user()") cfb7fe3fdd4ca1d3 acc071343d29c2361619b05ad50 ---------------- --------------------------- %stddev %change %stddev \ | \ 19156 +1.5% 19440 stress-ng.time.percent_of_cpu_this_job_got 10436 +1.0% 10545 stress-ng.time.system_time 1074 +5.7% 1136 stress-ng.time.user_time 96626 +3.9% 100414 stress-ng.timermix.CLOCK_BOOTTIME_ticks_per_sec 96678 +3.9% 100466 stress-ng.timermix.CLOCK_MONOTONIC_ticks_per_sec 96928 +3.9% 100722 stress-ng.timermix.CLOCK_REALTIME_ticks_per_sec 96557 +3.9% 100354 stress-ng.timermix.CLOCK_TAI_ticks_per_sec 5.222e+09 +4.1% 5.435e+09 stress-ng.timermix.ops 87053077 +4.1% 90597493 stress-ng.timermix.ops_per_sec 4959 ± 10% -36.3% 3158 ± 45% sched_debug.cpu.curr->pid.min 80029448 ± 2% -9.4% 72474185 vmstat.system.in 12.91 ± 2% -1.1 11.84 mpstat.cpu.all.irq% 8.22 ± 2% +0.5 8.74 mpstat.cpu.all.usr% 7303 ±188% +339.4% 32092 ± 46% proc-vmstat.numa_pages_migrated 7303 ±188% +339.4% 32092 ± 46% proc-vmstat.pgmigrate_success 5.184e+09 -10.5% 4.638e+09 turbostat.IRQ 15.62 ± 30% +8.7 24.36 ± 17% turbostat.PKG_% 6.708e+10 +2.2% 6.854e+10 perf-stat.i.branch-instructions 98238988 ± 3% +12.8% 1.108e+08 ± 4% perf-stat.i.branch-misses 1.67 -1.2% 1.65 perf-stat.i.cpi 3.568e+11 +1.9% 3.637e+11 perf-stat.i.instructions 0.61 +1.2% 0.61 perf-stat.i.ipc 0.14 ± 2% +0.0 0.16 ± 4% perf-stat.overall.branch-miss-rate% 1.65 -1.3% 1.63 perf-stat.overall.cpi 0.61 +1.3% 0.61 perf-stat.overall.ipc 6.5e+10 +2.3% 6.651e+10 perf-stat.ps.branch-instructions 92701741 ± 3% +13.1% 1.049e+08 ± 4% perf-stat.ps.branch-misses 3.458e+11 +2.1% 3.529e+11 perf-stat.ps.instructions 6.11 ± 4% -5.2 0.92 ± 5% perf-profile.calltrace.cycles-pp.common_hrtimer_rearm.posixtimer_deliver_signal.dequeue_signal.get_signal.arch_do_signal_or_restart 12.38 ± 6% -2.8 9.61 ± 3% 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 10.16 ± 6% -2.2 7.91 ± 3% perf-profile.calltrace.cycles-pp._raw_spin_unlock_irq.get_signal.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64 23.29 ± 2% -1.1 22.20 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 4.65 ± 4% -0.9 3.74 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 3.90 ± 4% -0.8 3.15 perf-profile.calltrace.cycles-pp.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irq.get_signal 2.30 ± 4% -0.3 1.96 ± 6% perf-profile.calltrace.cycles-pp.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt 7.37 -0.3 7.06 ± 2% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.stress_timermix_timer_action 7.40 -0.3 7.10 ± 2% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.stress_timermix_timer_action 6.82 -0.3 6.52 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 7.07 -0.3 6.77 perf-profile.calltrace.cycles-pp.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.stress_timermix_timer_action 1.00 ± 4% -0.3 0.72 ± 5% perf-profile.calltrace.cycles-pp.__hrtimer_rearm_deferred.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irq.get_signal.arch_do_signal_or_restart 4.50 -0.2 4.25 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 1.57 ± 4% -0.2 1.33 ± 6% perf-profile.calltrace.cycles-pp.posix_timer_fn.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt 0.81 ± 4% -0.2 0.58 ± 5% perf-profile.calltrace.cycles-pp.clockevents_program_event.__hrtimer_rearm_deferred.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irq.get_signal 0.93 ± 3% -0.2 0.73 ± 6% perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.x64_setup_rt_frame.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64 1.08 ± 2% -0.1 0.93 ± 4% 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 0.75 +0.0 0.79 perf-profile.calltrace.cycles-pp._copy_to_user.__x64_sys_rt_sigpending.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending 1.12 +0.0 1.16 perf-profile.calltrace.cycles-pp._copy_from_user.restore_sigcontext.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.05 +0.0 1.09 perf-profile.calltrace.cycles-pp._copy_from_user.restore_altstack.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.00 +0.0 1.06 perf-profile.calltrace.cycles-pp.set_current_blocked.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.34 +0.0 1.39 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 1.58 +0.1 1.65 perf-profile.calltrace.cycles-pp.restore_altstack.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.58 +0.1 1.66 perf-profile.calltrace.cycles-pp.__get_user_nocheck_8.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.84 +0.1 1.94 perf-profile.calltrace.cycles-pp.__x64_sys_rt_sigpending.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending 2.61 +0.1 2.76 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.stress_timermix_timer_action 6.00 +0.2 6.24 perf-profile.calltrace.cycles-pp.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe 4.12 ± 2% +0.3 4.38 ± 2% perf-profile.calltrace.cycles-pp.__restore_fpregs_from_user.restore_fpregs_from_user.fpu__restore_sig.restore_sigcontext.__x64_sys_rt_sigreturn 1.51 ± 4% +0.3 1.82 ± 11% perf-profile.calltrace.cycles-pp.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.copy_fpstate_to_sigframe 4.92 ± 2% +0.3 5.23 ± 2% perf-profile.calltrace.cycles-pp.restore_fpregs_from_user.fpu__restore_sig.restore_sigcontext.__x64_sys_rt_sigreturn.do_syscall_64 3.00 ± 8% +0.4 3.35 perf-profile.calltrace.cycles-pp.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.copy_fpstate_to_sigframe.get_sigframe.x64_setup_rt_frame 2.29 ± 9% +0.5 2.82 ± 2% perf-profile.calltrace.cycles-pp.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.copy_fpstate_to_sigframe.get_sigframe 1.32 ± 9% +0.5 1.86 ± 12% perf-profile.calltrace.cycles-pp.restore_sigcontext.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending 1.34 ± 9% +0.5 1.89 ± 12% perf-profile.calltrace.cycles-pp.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending 0.00 +0.6 0.56 ± 5% perf-profile.calltrace.cycles-pp.ktime_get.hrtimer_start_range_ns_user.posixtimer_deliver_signal.dequeue_signal.get_signal 0.00 +0.7 0.67 ± 5% perf-profile.calltrace.cycles-pp.__hrtimer_start_range_ns.hrtimer_start_range_ns_user.posixtimer_deliver_signal.dequeue_signal.get_signal 7.81 ± 3% +0.7 8.51 ± 2% 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 17.95 +1.1 19.00 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 35.94 +1.1 37.06 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 7.76 ± 3% +1.3 9.11 ± 2% perf-profile.calltrace.cycles-pp.posixtimer_deliver_signal.dequeue_signal.get_signal.arch_do_signal_or_restart.exit_to_user_mode_loop 9.09 ± 2% +1.4 10.52 ± 2% perf-profile.calltrace.cycles-pp.dequeue_signal.get_signal.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64 29.22 +1.5 30.76 perf-profile.calltrace.cycles-pp.get_sigframe.x64_setup_rt_frame.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64 0.00 +2.6 2.61 ± 2% perf-profile.calltrace.cycles-pp.clockevents_program_event.hrtimer_start_range_ns_user.posixtimer_deliver_signal.dequeue_signal.get_signal 10.14 ± 7% +3.6 13.72 ± 13% perf-profile.calltrace.cycles-pp.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending 10.10 ± 9% +3.6 13.70 ± 12% perf-profile.calltrace.cycles-pp.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending 14.34 ± 7% +4.3 18.65 ± 10% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending 14.65 ± 7% +4.3 18.97 ± 10% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.sigpending 17.06 ± 6% +4.4 21.50 ± 9% perf-profile.calltrace.cycles-pp.sigpending 0.00 +5.6 5.56 ± 2% perf-profile.calltrace.cycles-pp.hrtimer_start_range_ns_user.posixtimer_deliver_signal.dequeue_signal.get_signal.arch_do_signal_or_restart 6.87 -5.5 1.42 perf-profile.children.cycles-pp.common_hrtimer_rearm 5.40 -5.4 0.00 perf-profile.children.cycles-pp.hrtimer_start_range_ns 28.99 -2.9 26.08 perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt 13.45 ± 2% -2.8 10.61 ± 2% perf-profile.children.cycles-pp._raw_spin_unlock_irq 24.52 -1.4 23.16 perf-profile.children.cycles-pp.get_signal 14.74 -1.3 13.44 perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt 69.70 -1.2 68.48 perf-profile.children.cycles-pp.arch_do_signal_or_restart 70.10 -1.2 68.89 perf-profile.children.cycles-pp.exit_to_user_mode_loop 12.32 -1.1 11.26 perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt 8.96 -0.7 8.22 perf-profile.children.cycles-pp.hrtimer_interrupt 6.42 -0.7 5.69 perf-profile.children.cycles-pp.clockevents_program_event 88.79 -0.5 88.32 perf-profile.children.cycles-pp.do_syscall_64 5.45 -0.4 5.01 perf-profile.children.cycles-pp.__hrtimer_run_queues 89.22 -0.4 88.78 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 5.12 -0.4 4.69 perf-profile.children.cycles-pp.fpu__clear_user_states 10.43 -0.4 10.00 perf-profile.children.cycles-pp.native_irq_return_iret 3.40 ± 2% -0.4 2.97 ± 2% perf-profile.children.cycles-pp.copy_siginfo_to_user 3.78 -0.4 3.38 perf-profile.children.cycles-pp.__hrtimer_rearm_deferred 3.65 -0.3 3.33 perf-profile.children.cycles-pp.posix_timer_fn 3.04 -0.3 2.76 perf-profile.children.cycles-pp.native_apic_msr_eoi 1.52 -0.1 1.36 perf-profile.children.cycles-pp.irqtime_account_irq 1.84 -0.1 1.70 perf-profile.children.cycles-pp.ktime_get_update_offsets_now 2.52 -0.1 2.38 perf-profile.children.cycles-pp._copy_to_user 1.12 -0.1 1.01 perf-profile.children.cycles-pp.sched_clock_cpu 0.96 -0.1 0.87 perf-profile.children.cycles-pp.sched_clock 1.02 -0.1 0.93 perf-profile.children.cycles-pp.__irq_exit_rcu 0.70 -0.1 0.62 perf-profile.children.cycles-pp.error_entry 0.61 -0.1 0.53 perf-profile.children.cycles-pp.ktime_expiry_to_cycles 0.74 -0.1 0.67 perf-profile.children.cycles-pp.native_sched_clock 0.52 -0.1 0.47 perf-profile.children.cycles-pp.irqentry_exit 0.50 -0.1 0.45 perf-profile.children.cycles-pp.hrtimer_update_next_event 0.26 -0.0 0.22 ± 2% perf-profile.children.cycles-pp.tick_program_event 0.16 -0.0 0.12 ± 3% perf-profile.children.cycles-pp.hrtimer_reprogram 0.20 -0.0 0.18 ± 2% perf-profile.children.cycles-pp.irq_enter_rcu 0.09 ± 4% -0.0 0.07 perf-profile.children.cycles-pp.__hrtimer_reprogram 0.19 -0.0 0.17 perf-profile.children.cycles-pp.hrtimer_bases_first 0.14 -0.0 0.12 perf-profile.children.cycles-pp.irqentry_enter 0.60 -0.0 0.59 perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore 0.14 -0.0 0.13 perf-profile.children.cycles-pp.restore_regs_and_return_to_kernel 0.09 -0.0 0.08 perf-profile.children.cycles-pp.sched_clock_noinstr 0.11 -0.0 0.10 perf-profile.children.cycles-pp.sched_core_idle_cpu 0.14 +0.0 0.15 perf-profile.children.cycles-pp.rb_erase 0.17 +0.0 0.18 perf-profile.children.cycles-pp.arch_exit_to_user_mode_prepare 0.09 +0.0 0.10 perf-profile.children.cycles-pp.tick_nohz_tick_stopped 0.30 +0.0 0.31 perf-profile.children.cycles-pp.x64_sys_call 0.22 +0.0 0.23 ± 2% perf-profile.children.cycles-pp.__check_object_size 0.26 +0.0 0.28 perf-profile.children.cycles-pp.do_sigaltstack 0.26 +0.0 0.28 perf-profile.children.cycles-pp.try_to_wake_up 0.37 +0.0 0.39 perf-profile.children.cycles-pp.hrtimer_forward 0.27 +0.0 0.29 perf-profile.children.cycles-pp.posixtimer_queue_sigqueue 0.49 +0.0 0.52 perf-profile.children.cycles-pp.entry_SYSCALL_64_safe_stack 0.48 +0.0 0.51 perf-profile.children.cycles-pp.prandom_u32_state 0.31 ± 2% +0.0 0.34 perf-profile.children.cycles-pp.prepare_signal 0.34 +0.0 0.37 perf-profile.children.cycles-pp.timerqueue_linked_add 0.87 +0.0 0.90 perf-profile.children.cycles-pp.__get_user_nocheck_4 2.06 +0.0 2.08 perf-profile.children.cycles-pp._raw_spin_lock_irq 0.28 +0.0 0.31 perf-profile.children.cycles-pp.rb_erase_linked 0.42 +0.0 0.45 perf-profile.children.cycles-pp.ktime_get_with_offset 0.42 +0.0 0.46 ± 5% perf-profile.children.cycles-pp.collect_signal 1.48 +0.0 1.52 perf-profile.children.cycles-pp.signal_setup_done 0.75 +0.0 0.79 perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack 1.20 +0.0 1.24 perf-profile.children.cycles-pp.__local_bh_enable_ip 1.11 +0.0 1.15 perf-profile.children.cycles-pp.set_current_blocked 1.27 +0.0 1.32 perf-profile.children.cycles-pp.recalc_sigpending 1.00 +0.1 1.06 perf-profile.children.cycles-pp.__hrtimer_start_range_ns 1.68 +0.1 1.74 perf-profile.children.cycles-pp.restore_altstack 0.98 +0.1 1.04 perf-profile.children.cycles-pp.complete_signal 0.51 +0.1 0.57 perf-profile.children.cycles-pp.__remove_hrtimer 2.18 +0.1 2.25 perf-profile.children.cycles-pp.check_xstate_in_sigframe 2.33 +0.1 2.41 perf-profile.children.cycles-pp.__fpu_restore_sig 2.39 +0.1 2.46 perf-profile.children.cycles-pp._copy_from_user 1.92 +0.1 2.01 perf-profile.children.cycles-pp.entry_SYSCALL_64 2.76 +0.1 2.86 perf-profile.children.cycles-pp.__put_user_nocheck_4 1.96 +0.1 2.06 perf-profile.children.cycles-pp.__x64_sys_rt_sigpending 4.67 +0.2 4.85 perf-profile.children.cycles-pp.__restore_fpregs_from_user 5.73 +0.2 5.92 perf-profile.children.cycles-pp.__get_user_nocheck_8 5.63 +0.2 5.85 perf-profile.children.cycles-pp.restore_fpregs_from_user 2.91 +0.2 3.14 perf-profile.children.cycles-pp.posixtimer_send_sigqueue 8.06 +0.3 8.35 perf-profile.children.cycles-pp.fpu__restore_sig 9.72 +0.4 10.08 perf-profile.children.cycles-pp.restore_sigcontext 37.92 +0.5 38.44 perf-profile.children.cycles-pp.x64_setup_rt_frame 14.64 +0.5 15.17 perf-profile.children.cycles-pp.__x64_sys_rt_sigreturn 0.37 ± 2% +0.8 1.22 perf-profile.children.cycles-pp.ktime_get 20.36 +0.9 21.30 perf-profile.children.cycles-pp.copy_fpstate_to_sigframe 31.01 +1.2 32.17 perf-profile.children.cycles-pp.get_sigframe 8.63 +1.4 10.00 perf-profile.children.cycles-pp.posixtimer_deliver_signal 9.82 +1.4 11.26 perf-profile.children.cycles-pp.dequeue_signal 17.96 ± 5% +4.4 22.33 ± 9% perf-profile.children.cycles-pp.sigpending 0.00 +6.2 6.24 perf-profile.children.cycles-pp.hrtimer_start_range_ns_user 4.19 ± 2% -0.8 3.36 ± 2% perf-profile.self.cycles-pp._raw_spin_unlock_irq 5.85 -0.7 5.20 perf-profile.self.cycles-pp.clockevents_program_event 10.42 -0.4 9.99 perf-profile.self.cycles-pp.native_irq_return_iret 3.00 -0.3 2.72 perf-profile.self.cycles-pp.native_apic_msr_eoi 1.80 -0.1 1.67 perf-profile.self.cycles-pp.ktime_get_update_offsets_now 0.68 -0.1 0.60 perf-profile.self.cycles-pp.error_entry 0.76 -0.1 0.69 perf-profile.self.cycles-pp.hrtimer_interrupt 0.53 -0.1 0.47 perf-profile.self.cycles-pp.ktime_expiry_to_cycles 0.70 -0.1 0.64 perf-profile.self.cycles-pp.native_sched_clock 0.53 -0.1 0.47 perf-profile.self.cycles-pp.asm_sysvec_apic_timer_interrupt 0.66 -0.1 0.60 perf-profile.self.cycles-pp.__hrtimer_run_queues 1.12 ± 2% -0.1 1.07 perf-profile.self.cycles-pp.copy_siginfo_to_user 0.48 -0.0 0.43 perf-profile.self.cycles-pp.irqentry_exit 0.36 -0.0 0.32 perf-profile.self.cycles-pp.sysvec_apic_timer_interrupt 3.76 -0.0 3.72 perf-profile.self.cycles-pp.fpu__clear_user_states 0.22 -0.0 0.18 perf-profile.self.cycles-pp.tick_program_event 0.14 -0.0 0.10 perf-profile.self.cycles-pp.hrtimer_reprogram 0.22 -0.0 0.18 ± 2% perf-profile.self.cycles-pp.common_hrtimer_rearm 0.38 -0.0 0.34 perf-profile.self.cycles-pp.irqtime_account_irq 0.31 -0.0 0.28 perf-profile.self.cycles-pp.hrtimer_update_next_event 0.29 -0.0 0.26 perf-profile.self.cycles-pp.__sysvec_apic_timer_interrupt 0.20 -0.0 0.18 perf-profile.self.cycles-pp.__hrtimer_rearm_deferred 0.17 -0.0 0.15 perf-profile.self.cycles-pp.hrtimer_bases_first 0.17 -0.0 0.15 ± 2% perf-profile.self.cycles-pp.sched_clock 1.73 -0.0 1.71 perf-profile.self.cycles-pp._raw_spin_lock_irqsave 0.12 ± 3% -0.0 0.10 perf-profile.self.cycles-pp.irqentry_enter 0.16 -0.0 0.14 ± 3% perf-profile.self.cycles-pp.sched_clock_cpu 0.22 ± 2% -0.0 0.20 perf-profile.self.cycles-pp.posix_timer_fn 0.12 -0.0 0.10 ± 4% perf-profile.self.cycles-pp.irq_enter_rcu 0.07 ± 5% -0.0 0.06 perf-profile.self.cycles-pp.__hrtimer_reprogram 0.21 -0.0 0.20 perf-profile.self.cycles-pp.__irq_exit_rcu 0.10 -0.0 0.09 perf-profile.self.cycles-pp.restore_regs_and_return_to_kernel 0.14 +0.0 0.15 perf-profile.self.cycles-pp.__check_object_size 0.11 +0.0 0.12 perf-profile.self.cycles-pp.kick_process 0.19 +0.0 0.20 perf-profile.self.cycles-pp.set_current_blocked 0.29 +0.0 0.30 perf-profile.self.cycles-pp.signal_setup_done 0.32 +0.0 0.34 perf-profile.self.cycles-pp.entry_SYSCALL_64_safe_stack 0.15 ± 3% +0.0 0.16 ± 2% perf-profile.self.cycles-pp.rb_erase_linked 0.26 +0.0 0.28 perf-profile.self.cycles-pp.timerqueue_linked_add 0.42 +0.0 0.44 perf-profile.self.cycles-pp.__x64_sys_rt_sigreturn 0.43 +0.0 0.44 perf-profile.self.cycles-pp.restore_sigcontext 0.32 +0.0 0.34 perf-profile.self.cycles-pp.hrtimer_forward 0.44 +0.0 0.46 perf-profile.self.cycles-pp.prandom_u32_state 0.25 +0.0 0.26 perf-profile.self.cycles-pp.try_to_wake_up 0.36 +0.0 0.38 perf-profile.self.cycles-pp.exit_to_user_mode_loop 0.22 +0.0 0.24 perf-profile.self.cycles-pp.posixtimer_queue_sigqueue 0.38 +0.0 0.40 perf-profile.self.cycles-pp.dequeue_signal 0.93 +0.0 0.95 perf-profile.self.cycles-pp.fpregs_mark_activate 0.41 +0.0 0.43 perf-profile.self.cycles-pp.__x64_sys_rt_sigpending 0.29 +0.0 0.31 perf-profile.self.cycles-pp.prepare_signal 0.47 +0.0 0.50 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe 0.42 +0.0 0.44 perf-profile.self.cycles-pp.ktime_get_with_offset 1.90 +0.0 1.93 perf-profile.self.cycles-pp._raw_spin_lock_irq 0.85 +0.0 0.88 perf-profile.self.cycles-pp.__get_user_nocheck_4 0.19 ± 4% +0.0 0.22 ± 5% perf-profile.self.cycles-pp.sigismember 0.40 +0.0 0.43 ± 5% perf-profile.self.cycles-pp.collect_signal 0.61 +0.0 0.64 perf-profile.self.cycles-pp.__hrtimer_start_range_ns 0.77 +0.0 0.80 perf-profile.self.cycles-pp.__local_bh_enable_ip 0.23 +0.0 0.26 perf-profile.self.cycles-pp.__remove_hrtimer 0.71 +0.0 0.74 perf-profile.self.cycles-pp.entry_SYSCALL_64 0.74 +0.0 0.78 perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack 0.58 +0.0 0.61 perf-profile.self.cycles-pp.complete_signal 1.30 +0.0 1.35 perf-profile.self.cycles-pp.check_xstate_in_sigframe 1.32 +0.0 1.36 perf-profile.self.cycles-pp.get_signal 1.21 +0.0 1.26 perf-profile.self.cycles-pp.recalc_sigpending 1.20 +0.1 1.25 perf-profile.self.cycles-pp.do_syscall_64 1.32 ± 2% +0.1 1.38 perf-profile.self.cycles-pp.stress_timermix_timer_action 1.34 +0.1 1.40 perf-profile.self.cycles-pp.sigpending 0.85 +0.1 0.91 perf-profile.self.cycles-pp.posixtimer_deliver_signal 1.74 +0.1 1.81 perf-profile.self.cycles-pp.__put_user_nocheck_8 0.75 +0.1 0.82 perf-profile.self.cycles-pp.posixtimer_send_sigqueue 1.65 +0.1 1.72 perf-profile.self.cycles-pp.get_sigframe 2.33 +0.1 2.40 perf-profile.self.cycles-pp._copy_from_user 1.67 +0.1 1.74 perf-profile.self.cycles-pp.__put_user_nocheck_4 3.93 +0.2 4.08 perf-profile.self.cycles-pp.__get_user_nocheck_8 4.60 +0.2 4.79 perf-profile.self.cycles-pp.__restore_fpregs_from_user 8.17 +0.3 8.52 perf-profile.self.cycles-pp.copy_fpstate_to_sigframe 0.00 +0.6 0.57 perf-profile.self.cycles-pp.hrtimer_start_range_ns_user 0.36 ± 2% +0.8 1.18 perf-profile.self.cycles-pp.ktime_get 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