* [tip:timers/core] [clockevents] d6e152d905: stress-ng.timermix.ops_per_sec 4.8% regression
@ 2026-04-30 2:55 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-04-30 2:55 UTC (permalink / raw)
To: Thomas Gleixner
Cc: oe-lkp, lkp, linux-kernel, x86, Calvin Owens, Borislav Petkov,
oliver.sang
Hello,
kernel test robot noticed a 4.8% regression of stress-ng.timermix.ops_per_sec on:
commit: d6e152d905bdb1f32f9d99775e2f453350399a6a ("clockevents: Prevent timer interrupt starvation")
https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git timers/core
testcase: stress-ng
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 192 threads 2 sockets Intel(R) Xeon(R) 6740E CPU @ 2.4GHz (Sierra Forest) with 256G memory
parameters:
nr_threads: 100%
testtime: 60s
test: timermix
cpufreq_governor: performance
In addition to that, the commit also has significant impact on the following tests:
+------------------+-------------------------------------------------------------+
| testcase: change | stress-ng: stress-ng.schedmix.ops_per_sec 63.1% improvement |
| test parameters | cpufreq_governor=performance |
| | nr_threads=100% |
| | test=schedmix |
| | testtime=60s |
+------------------+-------------------------------------------------------------+
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 <oliver.sang@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202604301034.20678030-lkp@intel.com
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260430/202604301034.20678030-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-srf-2sp3/timermix/stress-ng/60s
commit:
82b915051d ("tick/nohz: Fix inverted return value in check_tick_dependency() fast path")
timers-urgent-2026-04-12
82b915051d32a68e timers-urgent-2026-04-12
---------------- ---------------------------
%stddev %change %stddev
\ | \
56512 ± 5% +108.2% 117631 ± 13% stress-ng.time.involuntary_context_switches
16770 -3.4% 16208 stress-ng.time.percent_of_cpu_this_job_got
4985 ± 12% +89.5% 9447 stress-ng.time.system_time
5096 ± 12% -94.2% 295.08 stress-ng.time.user_time
68249 ± 32% +1830.1% 1317280 ± 8% stress-ng.time.voluntary_context_switches
113521 -4.9% 107945 stress-ng.timermix.CLOCK_BOOTTIME_ticks_per_sec
113637 -4.9% 108029 stress-ng.timermix.CLOCK_MONOTONIC_ticks_per_sec
113732 -4.8% 108294 stress-ng.timermix.CLOCK_REALTIME_ticks_per_sec
113484 -5.0% 107848 stress-ng.timermix.CLOCK_TAI_ticks_per_sec
0.28 ±118% +6352.0% 17.87 stress-ng.timermix.ITIMER_PROF_ticks_per_sec
0.45 ±201% +1.3e+05% 585.15 stress-ng.timermix.ITIMER_REAL_ticks_per_sec
0.81 ±161% +1954.0% 16.62 stress-ng.timermix.ITIMER_VIRTUAL_ticks_per_sec
5.246e+09 -4.8% 4.996e+09 stress-ng.timermix.ops
87471312 -4.8% 83288894 stress-ng.timermix.ops_per_sec
104627 ± 22% +776.3% 916799 ± 11% cpuidle..usage
187659 +4.6% 196280 proc-vmstat.nr_shmem
5.228e+09 +21.4% 6.347e+09 turbostat.IRQ
8982112 -5.6% 8475011 turbostat.NMI
11.65 +2.8 14.40 mpstat.cpu.all.irq%
41.93 ± 12% +37.5 79.45 mpstat.cpu.all.sys%
43.20 ± 12% -40.3 2.86 mpstat.cpu.all.usr%
3.30 ± 13% +48.5% 4.90 ± 6% mpstat.max_utilization.seconds
51.91 ± 9% +75.4% 91.07 vmstat.cpu.sy
41.95 ± 12% -93.5% 2.75 ± 2% vmstat.cpu.us
5058 ± 13% +783.6% 44690 ± 8% vmstat.system.cs
81826210 +21.4% 99328233 vmstat.system.in
487.42 ± 2% +6.4% 518.44 sched_debug.cfs_rq:/.util_est.avg
440.85 ± 29% +24.6% 549.18 ± 3% sched_debug.cpu.clock_task.stddev
2406 ± 7% +272.1% 8954 ± 7% sched_debug.cpu.nr_switches.avg
53222 ± 22% +108.1% 110764 ± 14% sched_debug.cpu.nr_switches.max
526.55 ± 11% +344.3% 2339 ± 30% sched_debug.cpu.nr_switches.min
4740 ± 22% +165.8% 12599 ± 20% sched_debug.cpu.nr_switches.stddev
6.482e+10 +3.7% 6.724e+10 perf-stat.i.branch-instructions
0.28 -0.0 0.27 perf-stat.i.branch-miss-rate%
1.819e+08 -3.9% 1.749e+08 perf-stat.i.branch-misses
4929 ± 14% +926.9% 50624 ± 9% perf-stat.i.context-switches
1.78 -2.3% 1.74 perf-stat.i.cpi
282.76 ± 2% +7.0% 302.66 ± 2% perf-stat.i.cpu-migrations
3.382e+11 +3.7% 3.506e+11 perf-stat.i.instructions
0.56 +3.6% 0.58 perf-stat.i.ipc
0.28 -0.0 0.26 perf-stat.overall.branch-miss-rate%
1.78 -3.6% 1.72 perf-stat.overall.cpi
0.56 +3.7% 0.58 perf-stat.overall.ipc
6.263e+10 +4.4% 6.536e+10 perf-stat.ps.branch-instructions
1.75e+08 -3.1% 1.696e+08 perf-stat.ps.branch-misses
4607 ± 15% +912.4% 46647 ± 8% perf-stat.ps.context-switches
264.68 ± 2% +7.9% 285.56 ± 2% perf-stat.ps.cpu-migrations
3.267e+11 +4.3% 3.408e+11 perf-stat.ps.instructions
1.974e+13 +4.1% 2.055e+13 perf-stat.total.instructions
22.90 ± 12% -22.9 0.00 perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.sigpending
11.28 ± 12% -11.3 0.00 perf-profile.calltrace.cycles-pp.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.sigpending
9.50 ± 12% -9.5 0.00 perf-profile.calltrace.cycles-pp.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.sigpending
7.45 ± 12% -7.5 0.00 perf-profile.calltrace.cycles-pp.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.sigpending
3.05 ± 71% -1.4 1.63 ± 4% perf-profile.calltrace.cycles-pp.__x64_sys_rt_sigpending.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending
2.33 ± 12% +0.3 2.66 ± 3% perf-profile.calltrace.cycles-pp.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt
0.91 ± 12% +0.5 1.41 ± 3% perf-profile.calltrace.cycles-pp.posixtimer_send_sigqueue.posix_timer_fn.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt
1.31 ± 12% +0.5 1.82 ± 3% perf-profile.calltrace.cycles-pp.posix_timer_fn.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt
2.61 ± 7% +0.7 3.26 ± 4% perf-profile.calltrace.cycles-pp.lapic_next_deadline.clockevents_program_event.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt
0.00 +0.7 0.67 ± 29% perf-profile.calltrace.cycles-pp.__irq_exit_rcu.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irq.get_signal
3.62 ± 7% +1.0 4.60 ± 4% perf-profile.calltrace.cycles-pp.clockevents_program_event.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt
3.53 ± 18% +1.6 5.14 ± 8% perf-profile.calltrace.cycles-pp.restore_sigcontext.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending
3.54 ± 18% +1.6 5.16 ± 8% perf-profile.calltrace.cycles-pp.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending
0.00 +2.1 2.08 ± 4% 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
19.93 ± 10% +8.0 27.93 ± 10% perf-profile.calltrace.cycles-pp.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.stress_timermix_itimer_action
20.73 ± 10% +9.0 29.69 ± 7% 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
0.07 ±300% +9.4 9.46 ± 3% perf-profile.calltrace.cycles-pp.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irq
0.00 +12.2 12.23 ± 3% perf-profile.calltrace.cycles-pp.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irq.get_signal
17.53 ± 21% +13.6 31.13 ± 7% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.sigpending
17.21 ± 21% +13.8 30.96 ± 7% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending
9.38 ± 20% +14.1 23.52 ± 8% perf-profile.calltrace.cycles-pp.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending
0.00 +14.5 14.53 ± 2% 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
9.90 ± 17% +15.0 24.89 ± 9% perf-profile.calltrace.cycles-pp.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.sigpending
0.00 +21.2 21.16 ± 2% perf-profile.calltrace.cycles-pp._raw_spin_unlock_irq.get_signal.arch_do_signal_or_restart.exit_to_user_mode_loop.do_syscall_64
8.41 ± 6% +26.3 34.74 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
0.00 +27.1 27.06 ± 2% 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
43.33 ± 7% -6.8 36.53 ± 7% perf-profile.children.cycles-pp.sigpending
3.20 ± 70% -1.5 1.65 ± 4% perf-profile.children.cycles-pp.__x64_sys_rt_sigpending
12.96 ± 2% -1.0 11.96 perf-profile.children.cycles-pp.copy_fpstate_to_sigframe
0.93 ± 6% -0.5 0.45 perf-profile.children.cycles-pp.__irqentry_text_end
4.72 -0.2 4.50 perf-profile.children.cycles-pp.__get_user_nocheck_8
1.82 ± 2% -0.2 1.64 perf-profile.children.cycles-pp.__put_user_nocheck_8
0.92 ± 5% -0.2 0.77 perf-profile.children.cycles-pp.arch_exit_to_user_mode_prepare
1.78 ± 2% -0.2 1.63 perf-profile.children.cycles-pp.__put_user_nocheck_4
0.22 ± 9% -0.2 0.07 perf-profile.children.cycles-pp.irqentry_exit
0.19 ± 3% -0.1 0.12 ± 3% perf-profile.children.cycles-pp.timerqueue_del
1.65 -0.1 1.59 perf-profile.children.cycles-pp._raw_spin_lock_irq
0.10 ± 5% -0.0 0.05 perf-profile.children.cycles-pp.rb_erase
0.70 -0.0 0.66 perf-profile.children.cycles-pp.__local_bh_enable_ip
0.94 -0.0 0.90 perf-profile.children.cycles-pp.recalc_sigpending
0.18 ± 3% -0.0 0.16 perf-profile.children.cycles-pp.get_xsave_addr_user
0.42 ± 2% -0.0 0.40 perf-profile.children.cycles-pp.entry_SYSCALL_64_safe_stack
0.07 ± 5% -0.0 0.05 ± 5% perf-profile.children.cycles-pp.__set_task_blocked
0.20 ± 3% -0.0 0.19 perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore
0.09 ± 5% +0.0 0.14 ± 3% perf-profile.children.cycles-pp.tick_nohz_handler
0.08 ± 8% +0.0 0.12 ± 5% perf-profile.children.cycles-pp.update_process_times
0.06 ± 9% +0.1 0.11 perf-profile.children.cycles-pp.prepare_signal
0.00 +0.1 0.08 perf-profile.children.cycles-pp.try_to_wake_up
0.14 ± 3% +0.1 0.23 ± 3% perf-profile.children.cycles-pp.__hrtimer_next_event_base
0.00 +0.1 0.12 ± 2% perf-profile.children.cycles-pp.fpu__alloc_mathframe
0.18 ± 2% +0.1 0.33 ± 3% perf-profile.children.cycles-pp.hrtimer_update_next_event
1.44 +0.2 1.59 perf-profile.children.cycles-pp._raw_spin_lock_irqsave
0.89 ± 2% +0.2 1.08 perf-profile.children.cycles-pp.native_sched_clock
1.20 ± 2% +0.2 1.43 perf-profile.children.cycles-pp.sched_clock_cpu
0.96 ± 3% +0.2 1.19 perf-profile.children.cycles-pp.__irq_exit_rcu
1.04 ± 2% +0.3 1.31 perf-profile.children.cycles-pp.sched_clock
0.90 ± 2% +0.3 1.19 ± 2% perf-profile.children.cycles-pp.ktime_get_update_offsets_now
2.59 ± 2% +0.3 2.94 perf-profile.children.cycles-pp.read_tsc
1.32 ± 2% +0.4 1.69 perf-profile.children.cycles-pp.irqtime_account_irq
0.06 ± 7% +0.4 0.48 perf-profile.children.cycles-pp.complete_signal
2.65 ± 2% +0.5 3.10 perf-profile.children.cycles-pp.__hrtimer_run_queues
1.03 ± 2% +0.6 1.62 perf-profile.children.cycles-pp.posixtimer_send_sigqueue
1.46 ± 2% +0.6 2.08 perf-profile.children.cycles-pp.posix_timer_fn
6.06 ± 2% +0.7 6.72 perf-profile.children.cycles-pp.lapic_next_deadline
2.08 ± 3% +0.7 2.74 perf-profile.children.cycles-pp.native_apic_msr_eoi
7.84 ± 3% +1.4 9.21 perf-profile.children.cycles-pp.clockevents_program_event
8.37 ± 2% +2.5 10.83 perf-profile.children.cycles-pp.hrtimer_interrupt
10.64 ± 2% +3.2 13.84 perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt
12.62 ± 2% +3.7 16.31 perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt
19.91 ± 2% +3.9 23.80 perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt
28.96 ± 10% +7.6 36.54 ± 7% perf-profile.children.cycles-pp.stress_timermix_itimer_action
67.73 ± 6% +23.3 90.99 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
67.37 ± 6% +23.3 90.65 perf-profile.children.cycles-pp.do_syscall_64
43.74 ± 4% +24.8 68.53 perf-profile.children.cycles-pp.exit_to_user_mode_loop
43.59 ± 4% +24.8 68.38 perf-profile.children.cycles-pp.arch_do_signal_or_restart
9.42 ± 6% +26.6 36.03 perf-profile.children.cycles-pp.get_signal
0.47 ±112% +26.7 27.20 perf-profile.children.cycles-pp._raw_spin_unlock_irq
5.92 ± 11% -4.9 0.97 perf-profile.self.cycles-pp.sigpending
9.60 ± 3% -0.7 8.86 perf-profile.self.cycles-pp.copy_fpstate_to_sigframe
0.92 ± 6% -0.5 0.45 perf-profile.self.cycles-pp.__irqentry_text_end
2.11 ± 3% -0.2 1.88 perf-profile.self.cycles-pp.x64_setup_rt_frame
4.56 -0.2 4.36 perf-profile.self.cycles-pp.__get_user_nocheck_8
1.53 ± 4% -0.2 1.35 perf-profile.self.cycles-pp.copy_siginfo_to_user
1.75 ± 2% -0.2 1.57 perf-profile.self.cycles-pp.__put_user_nocheck_8
0.91 ± 5% -0.2 0.76 perf-profile.self.cycles-pp.arch_exit_to_user_mode_prepare
0.63 ± 10% -0.2 0.48 perf-profile.self.cycles-pp.do_syscall_64
1.72 ± 2% -0.1 1.58 perf-profile.self.cycles-pp.__put_user_nocheck_4
0.26 ± 33% -0.1 0.12 ± 3% perf-profile.self.cycles-pp.__x64_sys_rt_sigpending
0.54 ± 3% -0.1 0.41 perf-profile.self.cycles-pp.__hrtimer_run_queues
0.95 -0.1 0.89 perf-profile.self.cycles-pp.fpregs_mark_activate
0.24 ± 5% -0.1 0.18 perf-profile.self.cycles-pp.hrtimer_start_range_ns
1.62 -0.1 1.57 perf-profile.self.cycles-pp._raw_spin_lock_irq
0.16 ± 3% -0.0 0.11 ± 4% perf-profile.self.cycles-pp.sched_clock_cpu
0.70 -0.0 0.65 perf-profile.self.cycles-pp.__local_bh_enable_ip
0.92 -0.0 0.89 perf-profile.self.cycles-pp.recalc_sigpending
0.09 ± 5% -0.0 0.07 ± 5% perf-profile.self.cycles-pp.irqentry_exit
0.20 ± 3% -0.0 0.18 ± 2% perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore
0.07 ± 5% -0.0 0.05 ± 5% perf-profile.self.cycles-pp.__set_task_blocked
0.14 ± 3% -0.0 0.12 ± 2% perf-profile.self.cycles-pp.get_xsave_addr_user
0.32 ± 2% -0.0 0.30 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe
0.14 ± 3% -0.0 0.13 ± 3% perf-profile.self.cycles-pp.exit_to_user_mode_loop
0.62 ± 2% +0.0 0.66 perf-profile.self.cycles-pp.ktime_get
0.28 ± 3% +0.0 0.32 ± 2% perf-profile.self.cycles-pp.ktime_get_update_offsets_now
0.06 ± 9% +0.1 0.10 ± 4% perf-profile.self.cycles-pp.hrtimer_update_next_event
0.16 +0.1 0.21 perf-profile.self.cycles-pp.arch_do_signal_or_restart
0.06 ± 9% +0.1 0.11 perf-profile.self.cycles-pp.prepare_signal
0.00 +0.1 0.06 ± 6% perf-profile.self.cycles-pp.restore_regs_and_return_to_kernel
0.15 ± 3% +0.1 0.22 ± 3% perf-profile.self.cycles-pp.sched_clock
0.46 ± 2% +0.1 0.53 perf-profile.self.cycles-pp.posixtimer_send_sigqueue
0.20 ± 2% +0.1 0.28 perf-profile.self.cycles-pp.__sysvec_apic_timer_interrupt
0.00 +0.1 0.08 perf-profile.self.cycles-pp.try_to_wake_up
0.25 ± 2% +0.1 0.33 perf-profile.self.cycles-pp.__irq_exit_rcu
0.13 ± 4% +0.1 0.22 ± 4% perf-profile.self.cycles-pp.__hrtimer_next_event_base
0.55 ± 5% +0.1 0.66 perf-profile.self.cycles-pp.get_signal
0.00 +0.1 0.12 ± 2% perf-profile.self.cycles-pp.fpu__alloc_mathframe
0.24 ± 3% +0.1 0.36 perf-profile.self.cycles-pp.hrtimer_interrupt
0.12 ± 4% +0.1 0.27 perf-profile.self.cycles-pp.irqtime_account_irq
1.42 +0.2 1.57 perf-profile.self.cycles-pp._raw_spin_lock_irqsave
0.07 ± 30% +0.2 0.24 perf-profile.self.cycles-pp.sysvec_apic_timer_interrupt
0.88 ± 2% +0.2 1.07 perf-profile.self.cycles-pp.native_sched_clock
1.58 ± 3% +0.2 1.77 perf-profile.self.cycles-pp.get_sigframe
0.83 ± 4% +0.2 1.04 perf-profile.self.cycles-pp.asm_sysvec_apic_timer_interrupt
0.06 +0.3 0.38 perf-profile.self.cycles-pp.complete_signal
2.56 ± 2% +0.4 2.92 perf-profile.self.cycles-pp.read_tsc
6.06 ± 2% +0.7 6.71 perf-profile.self.cycles-pp.lapic_next_deadline
2.08 ± 3% +0.7 2.73 perf-profile.self.cycles-pp.native_apic_msr_eoi
0.27 ± 46% +6.3 6.61 perf-profile.self.cycles-pp._raw_spin_unlock_irq
***************************************************************************************************
=========================================================================================
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/schedmix/stress-ng/60s
commit:
82b915051d ("tick/nohz: Fix inverted return value in check_tick_dependency() fast path")
timers-urgent-2026-04-12
82b915051d32a68e timers-urgent-2026-04-12
---------------- ---------------------------
%stddev %change %stddev
\ | \
3727996 ± 2% +63.3% 6086179 ± 2% stress-ng.schedmix.ops
62046 ± 2% +63.1% 101211 ± 2% stress-ng.schedmix.ops_per_sec
3.706e+08 ± 10% +161.6% 9.696e+08 ± 4% stress-ng.time.involuntary_context_switches
6706225 ± 2% +59.2% 10675958 ± 3% stress-ng.time.minor_page_faults
10384 ± 7% +52.1% 15792 ± 3% stress-ng.time.percent_of_cpu_this_job_got
7633 ± 2% +33.4% 10181 stress-ng.time.system_time
799.27 ± 3% +34.3% 1073 ± 2% stress-ng.time.user_time
30210 ± 11% +43.4% 43336 ± 14% perf-c2c.HITM.local
36806 ± 3% -9.7% 33246 uptime.idle
7.243e+09 ± 18% -48.2% 3.749e+09 ± 14% cpuidle..time
68067197 ± 8% -36.7% 43065856 ± 6% cpuidle..usage
5080 ± 3% -44.4% 2827 ± 81% perf-sched.sch_delay.max.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
5080 ± 3% -44.4% 2827 ± 81% perf-sched.total_sch_delay.max.ms
6258064 ± 9% +24.1% 7768194 ± 6% numa-meminfo.node1.Active
6258058 ± 9% +24.1% 7768188 ± 6% numa-meminfo.node1.Active(anon)
5388416 ± 11% +29.3% 6966039 ± 5% numa-meminfo.node1.Shmem
2684543 ± 5% +60.6% 4312022 ± 5% numa-numastat.node0.local_node
2824724 ± 5% +57.0% 4433597 ± 4% numa-numastat.node0.numa_hit
4847047 ± 4% +41.4% 6855842 ± 3% numa-numastat.node1.local_node
4959261 ± 4% +40.9% 6985718 ± 3% numa-numastat.node1.numa_hit
40.98 ± 10% -38.7% 25.11 ± 9% vmstat.cpu.id
9407108 ± 6% +17.2% 11028272 ± 3% vmstat.memory.cache
298.23 ± 11% +203.3% 904.51 ± 9% vmstat.procs.r
10557412 ± 10% +78.6% 18850266 ± 4% vmstat.system.cs
3610309 ± 7% +71.2% 6181556 ± 3% vmstat.system.in
39.54 ± 12% -16.5 23.00 ± 10% mpstat.cpu.all.idle%
11.07 ± 12% -4.5 6.53 ± 4% mpstat.cpu.all.irq%
4.43 ± 9% +2.1 6.49 ± 4% mpstat.cpu.all.nice%
0.10 ± 10% -0.0 0.08 ± 4% mpstat.cpu.all.soft%
44.40 ± 7% +19.1 63.46 ± 3% mpstat.cpu.all.sys%
0.46 -0.0 0.43 ± 2% mpstat.cpu.all.usr%
6841708 ± 8% +24.5% 8515254 ± 4% meminfo.Active
6841691 ± 8% +24.5% 8515238 ± 4% meminfo.Active(anon)
1394289 +5.7% 1473069 meminfo.AnonPages
9220886 ± 6% +17.3% 10815935 ± 3% meminfo.Cached
15366259 ± 3% +12.7% 17311630 ± 2% meminfo.Memused
5430240 ± 11% +29.4% 7025294 ± 5% meminfo.Shmem
16005793 ± 4% +10.3% 17662114 ± 2% meminfo.max_used_kB
2824792 ± 5% +56.9% 4433070 ± 4% numa-vmstat.node0.numa_hit
2684642 ± 5% +60.6% 4311400 ± 5% numa-vmstat.node0.numa_local
1565643 ± 9% +24.1% 1942732 ± 6% numa-vmstat.node1.nr_active_anon
1348189 ± 11% +29.2% 1742213 ± 5% numa-vmstat.node1.nr_shmem
1565639 ± 9% +24.1% 1942728 ± 6% numa-vmstat.node1.nr_zone_active_anon
4959670 ± 4% +40.8% 6985135 ± 3% numa-vmstat.node1.numa_hit
4847444 ± 4% +41.4% 6855259 ± 3% numa-vmstat.node1.numa_local
1767 ± 7% +24.5% 2200 ± 3% turbostat.Avg_MHz
61.28 ± 7% +15.1 76.34 ± 3% turbostat.Busy%
10.88 ± 9% -5.1 5.75 ± 6% turbostat.C1E%
4.42 ± 9% -34.4% 2.90 ± 6% turbostat.CPU%c1
0.56 ± 2% +28.1% 0.72 turbostat.IPC
3.088e+08 +52.2% 4.699e+08 ± 2% turbostat.IRQ
7.24 ± 12% +7.6 14.84 ± 13% turbostat.PKG_%
0.11 ± 17% -0.1 0.01 turbostat.POLL%
543.09 ± 3% +12.1% 608.86 turbostat.PkgWatt
19.24 +7.2% 20.62 turbostat.RAMWatt
1710215 ± 9% +24.4% 2126686 ± 4% proc-vmstat.nr_active_anon
348541 +5.6% 368112 proc-vmstat.nr_anon_pages
2305042 ± 6% +17.2% 2701998 ± 3% proc-vmstat.nr_file_pages
1357379 ± 11% +29.2% 1754337 ± 5% proc-vmstat.nr_shmem
41479 +3.6% 42980 proc-vmstat.nr_slab_reclaimable
1710215 ± 9% +24.4% 2126685 ± 4% proc-vmstat.nr_zone_active_anon
7790140 ± 3% +46.7% 11424460 ± 3% proc-vmstat.numa_hit
7537688 ± 3% +48.2% 11172836 ± 3% proc-vmstat.numa_local
8254354 ± 2% +45.5% 12009164 ± 3% proc-vmstat.pgalloc_normal
7666528 +51.0% 11578012 ± 3% proc-vmstat.pgfault
5897586 ± 2% +53.1% 9027456 ± 3% proc-vmstat.pgfree
682469 ± 4% +59.9% 1090978 ± 7% proc-vmstat.pgreuse
0.57 ± 25% -48.2% 0.30 ± 12% perf-stat.i.MPKI
3.713e+10 ± 14% +102.8% 7.53e+10 ± 5% perf-stat.i.branch-instructions
1.358e+08 ± 14% +91.6% 2.602e+08 ± 4% perf-stat.i.branch-misses
24.76 ± 2% -4.6 20.13 ± 2% perf-stat.i.cache-miss-rate%
33705317 ± 11% +110.9% 71077249 ± 5% perf-stat.i.cache-misses
1.391e+08 ± 13% +190.4% 4.04e+08 ± 6% perf-stat.i.cache-references
8033233 ± 17% +127.4% 18268090 ± 6% perf-stat.i.context-switches
1.52 ± 6% -15.8% 1.28 ± 4% perf-stat.i.cpi
2.288e+11 -1.2% 2.261e+11 perf-stat.i.cpu-clock
3.052e+11 ± 14% +55.6% 4.749e+11 ± 5% perf-stat.i.cpu-cycles
216206 ± 20% +437.8% 1162782 ± 7% perf-stat.i.cpu-migrations
1.735e+11 ± 14% +102.5% 3.513e+11 ± 5% perf-stat.i.instructions
35.89 ± 17% +140.0% 86.14 ± 6% perf-stat.i.metric.K/sec
74366 ± 13% +103.3% 151200 ± 5% perf-stat.i.minor-faults
74367 ± 13% +103.3% 151201 ± 5% perf-stat.i.page-faults
2.288e+11 -1.2% 2.261e+11 perf-stat.i.task-clock
0.19 ± 2% +8.0% 0.20 perf-stat.overall.MPKI
0.35 -0.0 0.35 perf-stat.overall.branch-miss-rate%
24.37 ± 4% -7.1 17.29 ± 3% perf-stat.overall.cache-miss-rate%
1.77 -22.1% 1.37 perf-stat.overall.cpi
9464 ± 3% -27.9% 6820 ± 2% perf-stat.overall.cycles-between-cache-misses
0.57 +28.4% 0.73 perf-stat.overall.ipc
4.947e+10 ± 7% +59.6% 7.893e+10 ± 3% perf-stat.ps.branch-instructions
1.755e+08 ± 8% +56.2% 2.742e+08 ± 3% perf-stat.ps.branch-misses
43084205 ± 5% +72.4% 74277312 ± 4% perf-stat.ps.cache-misses
1.773e+08 ± 7% +142.6% 4.301e+08 ± 5% perf-stat.ps.cache-references
10844621 ± 10% +79.3% 19445632 ± 4% perf-stat.ps.context-switches
4.08e+11 ± 7% +24.1% 5.062e+11 ± 3% perf-stat.ps.cpu-cycles
292224 ± 16% +330.6% 1258364 ± 7% perf-stat.ps.cpu-migrations
2.31e+11 ± 7% +59.4% 3.682e+11 ± 3% perf-stat.ps.instructions
91544 ± 7% +72.6% 157971 ± 4% perf-stat.ps.minor-faults
91545 ± 7% +72.6% 157972 ± 4% perf-stat.ps.page-faults
1.907e+13 +40.1% 2.671e+13 perf-stat.total.instructions
1.718e+08 ± 13% +136.9% 4.071e+08 ± 4% sched_debug.cfs_rq:/.avg_vruntime.avg
3.769e+08 ± 13% +108.7% 7.866e+08 ± 6% sched_debug.cfs_rq:/.avg_vruntime.max
48634927 ± 25% +115.4% 1.048e+08 ± 28% sched_debug.cfs_rq:/.avg_vruntime.min
74986535 ± 14% +100.1% 1.5e+08 ± 8% sched_debug.cfs_rq:/.avg_vruntime.stddev
0.39 ± 37% +259.4% 1.39 ± 28% sched_debug.cfs_rq:/.h_nr_idle.avg
4.80 ± 41% +332.3% 20.75 ± 33% sched_debug.cfs_rq:/.h_nr_idle.max
0.71 ± 35% +313.1% 2.95 ± 26% sched_debug.cfs_rq:/.h_nr_idle.stddev
0.62 ± 26% +169.3% 1.68 ± 23% sched_debug.cfs_rq:/.h_nr_queued.avg
5.70 ± 35% +279.8% 21.65 ± 31% sched_debug.cfs_rq:/.h_nr_queued.max
0.88 ± 27% +254.3% 3.12 ± 23% sched_debug.cfs_rq:/.h_nr_queued.stddev
0.62 ± 26% +170.1% 1.67 ± 23% sched_debug.cfs_rq:/.h_nr_runnable.avg
5.70 ± 35% +279.8% 21.65 ± 31% sched_debug.cfs_rq:/.h_nr_runnable.max
0.87 ± 28% +256.4% 3.12 ± 24% sched_debug.cfs_rq:/.h_nr_runnable.stddev
57622096 ± 27% +302.7% 2.321e+08 ± 13% sched_debug.cfs_rq:/.left_deadline.avg
3.627e+08 ± 15% +108.3% 7.553e+08 ± 8% sched_debug.cfs_rq:/.left_deadline.max
92455131 ± 16% +162.1% 2.423e+08 ± 3% sched_debug.cfs_rq:/.left_deadline.stddev
57622012 ± 27% +302.7% 2.321e+08 ± 13% sched_debug.cfs_rq:/.left_vruntime.avg
3.627e+08 ± 15% +108.3% 7.553e+08 ± 8% sched_debug.cfs_rq:/.left_vruntime.max
92455021 ± 16% +162.1% 2.423e+08 ± 3% sched_debug.cfs_rq:/.left_vruntime.stddev
0.63 ± 26% +168.9% 1.68 ± 23% sched_debug.cfs_rq:/.nr_queued.avg
5.70 ± 35% +281.6% 21.75 ± 31% sched_debug.cfs_rq:/.nr_queued.max
0.88 ± 27% +254.1% 3.13 ± 23% sched_debug.cfs_rq:/.nr_queued.stddev
1035 ± 20% +62.4% 1680 ± 33% sched_debug.cfs_rq:/.removed.runnable_avg.max
105.83 ± 15% +71.5% 181.48 ± 36% sched_debug.cfs_rq:/.removed.runnable_avg.stddev
57622037 ± 27% +302.7% 2.321e+08 ± 13% sched_debug.cfs_rq:/.right_vruntime.avg
3.627e+08 ± 15% +108.3% 7.553e+08 ± 8% sched_debug.cfs_rq:/.right_vruntime.max
92455052 ± 16% +162.1% 2.423e+08 ± 3% sched_debug.cfs_rq:/.right_vruntime.stddev
569.22 ± 24% +190.0% 1650 ± 25% sched_debug.cfs_rq:/.runnable_avg.avg
4483 ± 42% +385.2% 21757 ± 30% sched_debug.cfs_rq:/.runnable_avg.max
642.04 ± 33% +373.6% 3040 ± 26% sched_debug.cfs_rq:/.runnable_avg.stddev
24.03 ± 67% +426.5% 126.53 ± 32% sched_debug.cfs_rq:/.spread.avg
644.06 ± 22% +58.6% 1021 ± 15% sched_debug.cfs_rq:/.spread.max
87.60 ± 35% +150.2% 219.19 ± 14% sched_debug.cfs_rq:/.spread.stddev
2078 ± 36% +117.9% 4529 ± 25% sched_debug.cfs_rq:/.util_est.max
300.09 ± 36% +103.7% 611.39 ± 21% sched_debug.cfs_rq:/.util_est.stddev
1.718e+08 ± 13% +136.9% 4.071e+08 ± 4% sched_debug.cfs_rq:/.zero_vruntime.avg
3.769e+08 ± 13% +108.7% 7.866e+08 ± 6% sched_debug.cfs_rq:/.zero_vruntime.max
48634926 ± 25% +115.4% 1.048e+08 ± 28% sched_debug.cfs_rq:/.zero_vruntime.min
74986534 ± 14% +100.1% 1.5e+08 ± 8% sched_debug.cfs_rq:/.zero_vruntime.stddev
15303 ± 17% +100.1% 30616 ± 24% sched_debug.cpu.curr->pid.avg
78142 +57.0% 122666 ± 2% sched_debug.cpu.curr->pid.max
18773 ± 22% +118.2% 40959 ± 17% sched_debug.cpu.curr->pid.stddev
0.78 ± 21% +143.4% 1.89 ± 20% sched_debug.cpu.nr_running.avg
6.20 ± 31% +251.6% 21.80 ± 30% sched_debug.cpu.nr_running.max
0.93 ± 25% +238.0% 3.13 ± 23% sched_debug.cpu.nr_running.stddev
1966597 ± 4% +57.8% 3103539 ± 3% sched_debug.cpu.nr_switches.avg
2751186 ± 8% +137.1% 6524123 ± 4% sched_debug.cpu.nr_switches.max
288900 ± 10% +297.6% 1148712 ± 5% sched_debug.cpu.nr_switches.stddev
6.98 -16.5% 5.82 ± 6% sched_debug.cpu.nr_uninterruptible.avg
97.35 ± 13% +158.0% 251.20 ± 9% sched_debug.cpu.nr_uninterruptible.max
-76.60 +188.6% -221.10 sched_debug.cpu.nr_uninterruptible.min
31.10 ± 21% +178.4% 86.59 ± 5% sched_debug.cpu.nr_uninterruptible.stddev
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.
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https://github.com/intel/lkp-tests/wiki
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