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Date: Thu, 20 Jun 2024 16:16:28 +0800
From: kernel test robot <oliver.sang@...el.com>
To: <zhangwei123171@...il.com>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, <linux-kernel@...r.kernel.org>,
<ying.huang@...el.com>, <feng.tang@...el.com>, <fengwei.yin@...el.com>,
<aubrey.li@...ux.intel.com>, <yu.c.chen@...el.com>, <mingo@...hat.com>,
<peterz@...radead.org>, <juri.lelli@...hat.com>,
<vincent.guittot@...aro.org>, <dietmar.eggemann@....com>,
<rostedt@...dmis.org>, zhangwei123171 <zhangwei123171@...com>,
<oliver.sang@...el.com>
Subject: Re: [PATCH] sched/fair: prefer available idle cpu in select_idle_core
Hello,
kernel test robot noticed a 2.9% improvement of stress-ng.vm-rw.ops_per_sec on:
commit: 9f2e02ee19cda318b3889a27c13aee04fdbeb179 ("[PATCH] sched/fair: prefer available idle cpu in select_idle_core")
url: https://github.com/intel-lab-lkp/linux/commits/zhangwei123171-gmail-com/sched-fair-prefer-available-idle-cpu-in-select_idle_core/20240612-195645
base: https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git c793a62823d1ce8f70d9cfc7803e3ea436277cda
patch link: https://lore.kernel.org/all/20240612115410.1659149-1-zhangwei123171@jd.com/
patch subject: [PATCH] sched/fair: prefer available idle cpu in select_idle_core
testcase: stress-ng
test machine: 224 threads 2 sockets Intel(R) Xeon(R) Platinum 8480CTDX (Sapphire Rapids) with 512G memory
parameters:
nr_threads: 100%
testtime: 60s
test: vm-rw
cpufreq_governor: performance
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240620/202406201547.f5077fa1-oliver.sang@intel.com
=========================================================================================
compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
gcc-13/performance/x86_64-rhel-8.3/100%/debian-12-x86_64-20240206.cgz/lkp-spr-2sp4/vm-rw/stress-ng/60s
commit:
c793a62823 ("sched/core: Drop spinlocks on contention iff kernel is preemptible")
9f2e02ee19 ("sched/fair: prefer available idle cpu in select_idle_core")
c793a62823d1ce8f 9f2e02ee19cda318b3889a27c13
---------------- ---------------------------
%stddev %change %stddev
\ | \
295657 ± 6% +22.8% 362935 ± 8% meminfo.Active
295610 ± 6% +22.8% 362887 ± 8% meminfo.Active(anon)
150724 ± 21% +67.4% 252378 ± 3% sched_debug.cfs_rq:/.avg_vruntime.stddev
150724 ± 21% +67.4% 252378 ± 3% sched_debug.cfs_rq:/.min_vruntime.stddev
10941857 +3.9% 11367018 vmstat.system.cs
1076455 -1.9% 1055781 vmstat.system.in
74324 ± 6% +21.9% 90584 ± 7% proc-vmstat.nr_active_anon
3.512e+09 +3.3% 3.626e+09 proc-vmstat.nr_foll_pin_acquired
3.512e+09 +3.3% 3.626e+09 proc-vmstat.nr_foll_pin_released
74324 ± 6% +21.9% 90584 ± 7% proc-vmstat.nr_zone_active_anon
760031 -70.4% 224972 stress-ng.time.involuntary_context_switches
3.948e+08 +2.9% 4.062e+08 stress-ng.time.voluntary_context_switches
1.975e+08 +2.9% 2.032e+08 stress-ng.vm-rw.ops
3291726 +2.9% 3387191 stress-ng.vm-rw.ops_per_sec
4.035e+10 +2.2% 4.123e+10 perf-stat.i.branch-instructions
0.67 -0.0 0.65 perf-stat.i.branch-miss-rate%
6.491e+09 +1.1% 6.564e+09 perf-stat.i.cache-references
11493579 +3.5% 11900089 perf-stat.i.context-switches
2.41 -1.9% 2.37 perf-stat.i.cpi
4817773 +1.7% 4901418 perf-stat.i.cpu-migrations
2.16e+11 +2.2% 2.208e+11 perf-stat.i.instructions
0.43 +1.7% 0.43 perf-stat.i.ipc
71.91 +3.6% 74.50 perf-stat.i.metric.K/sec
0.62 -0.0 0.61 perf-stat.overall.branch-miss-rate%
2.38 -1.6% 2.34 perf-stat.overall.cpi
0.42 +1.6% 0.43 perf-stat.overall.ipc
3.903e+10 +2.5% 3.999e+10 perf-stat.ps.branch-instructions
6.286e+09 +1.7% 6.395e+09 perf-stat.ps.cache-references
11123522 +4.1% 11584380 perf-stat.ps.context-switches
4664338 +2.4% 4775066 perf-stat.ps.cpu-migrations
2.09e+11 +2.5% 2.143e+11 perf-stat.ps.instructions
1.266e+13 +2.8% 1.301e+13 perf-stat.total.instructions
16.29 -0.3 15.97 perf-profile.calltrace.cycles-pp.pipe_write.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
16.70 -0.3 16.39 perf-profile.calltrace.cycles-pp.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
14.46 -0.3 14.16 perf-profile.calltrace.cycles-pp.__wake_up_common.__wake_up_sync_key.pipe_write.vfs_write.ksys_write
14.53 -0.3 14.23 perf-profile.calltrace.cycles-pp.__wake_up_sync_key.pipe_write.vfs_write.ksys_write.do_syscall_64
13.71 -0.3 13.41 perf-profile.calltrace.cycles-pp.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_sync_key.pipe_write
13.73 -0.3 13.44 perf-profile.calltrace.cycles-pp.autoremove_wake_function.__wake_up_common.__wake_up_sync_key.pipe_write.vfs_write
18.54 -0.2 18.31 perf-profile.calltrace.cycles-pp.__clone
8.93 -0.2 8.76 perf-profile.calltrace.cycles-pp.write.stress_vm_rw
8.77 -0.2 8.60 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.write.stress_vm_rw
8.71 -0.2 8.54 perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write.stress_vm_rw
8.78 -0.2 8.62 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.write.stress_vm_rw
62.61 -0.2 62.46 perf-profile.calltrace.cycles-pp.stress_vm_rw
8.39 -0.1 8.25 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.write.__clone
8.40 -0.1 8.26 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.write.__clone
8.32 -0.1 8.18 perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write.__clone
8.52 -0.1 8.38 perf-profile.calltrace.cycles-pp.write.__clone
13.62 -0.1 13.48 perf-profile.calltrace.cycles-pp.pipe_read.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe
14.30 -0.1 14.17 perf-profile.calltrace.cycles-pp.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read
9.69 -0.1 9.56 perf-profile.calltrace.cycles-pp.schedule.pipe_read.vfs_read.ksys_read.do_syscall_64
9.59 -0.1 9.47 perf-profile.calltrace.cycles-pp.__schedule.schedule.pipe_read.vfs_read.ksys_read
23.18 -0.1 23.07 perf-profile.calltrace.cycles-pp._copy_to_iter.copy_page_to_iter.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw
23.42 -0.1 23.31 perf-profile.calltrace.cycles-pp.copy_page_to_iter.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw.__x64_sys_process_vm_readv
9.04 -0.1 8.95 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.read.stress_vm_rw
4.71 -0.1 4.62 perf-profile.calltrace.cycles-pp.available_idle_cpu.select_idle_core.select_idle_cpu.select_idle_sibling.select_task_rq_fair
9.05 -0.1 8.96 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.read.stress_vm_rw
7.79 -0.1 7.71 perf-profile.calltrace.cycles-pp.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read.stress_vm_rw
0.63 -0.1 0.56 perf-profile.calltrace.cycles-pp.read
0.70 -0.0 0.67 perf-profile.calltrace.cycles-pp.prepare_task_switch.__schedule.schedule.pipe_read.vfs_read
0.58 -0.0 0.55 perf-profile.calltrace.cycles-pp._raw_spin_lock.__schedule.schedule_idle.do_idle.cpu_startup_entry
1.42 -0.0 1.40 perf-profile.calltrace.cycles-pp.switch_fpu_return.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.read
0.84 -0.0 0.83 perf-profile.calltrace.cycles-pp.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.read.__clone
0.71 +0.0 0.74 perf-profile.calltrace.cycles-pp.update_load_avg.enqueue_entity.enqueue_task_fair.ttwu_do_activate.sched_ttwu_pending
0.87 +0.0 0.90 perf-profile.calltrace.cycles-pp.switch_mm_irqs_off.__schedule.schedule_idle.do_idle.cpu_startup_entry
6.19 +0.0 6.22 perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry
6.24 +0.0 6.28 perf-profile.calltrace.cycles-pp.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary
5.16 +0.0 5.21 perf-profile.calltrace.cycles-pp._copy_from_iter.copy_page_from_iter.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw
2.76 +0.0 2.81 perf-profile.calltrace.cycles-pp.pin_user_pages_remote.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw.__x64_sys_process_vm_writev
3.50 +0.0 3.54 perf-profile.calltrace.cycles-pp.schedule_idle.do_idle.cpu_startup_entry.start_secondary.common_startup_64
3.36 +0.0 3.41 perf-profile.calltrace.cycles-pp.__schedule.schedule_idle.do_idle.cpu_startup_entry.start_secondary
5.35 +0.0 5.40 perf-profile.calltrace.cycles-pp.copy_page_from_iter.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw.__x64_sys_process_vm_writev
0.66 +0.1 0.73 perf-profile.calltrace.cycles-pp.sched_mm_cid_migrate_to.ttwu_do_activate.sched_ttwu_pending.__flush_smp_call_function_queue.flush_smp_call_function_queue
6.76 +0.1 6.82 perf-profile.calltrace.cycles-pp.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary.common_startup_64
2.15 +0.1 2.22 perf-profile.calltrace.cycles-pp.enqueue_entity.enqueue_task_fair.ttwu_do_activate.sched_ttwu_pending.__flush_smp_call_function_queue
7.38 +0.1 7.45 perf-profile.calltrace.cycles-pp.select_idle_cpu.select_idle_sibling.select_task_rq_fair.select_task_rq.try_to_wake_up
9.00 +0.1 9.08 perf-profile.calltrace.cycles-pp.select_task_rq_fair.select_task_rq.try_to_wake_up.autoremove_wake_function.__wake_up_common
9.37 +0.1 9.45 perf-profile.calltrace.cycles-pp.select_task_rq.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_sync_key
2.58 +0.1 2.68 perf-profile.calltrace.cycles-pp.enqueue_task_fair.ttwu_do_activate.sched_ttwu_pending.__flush_smp_call_function_queue.flush_smp_call_function_queue
9.08 +0.1 9.19 perf-profile.calltrace.cycles-pp.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw.__x64_sys_process_vm_writev.do_syscall_64
9.71 +0.1 9.82 perf-profile.calltrace.cycles-pp.process_vm_rw_core.process_vm_rw.__x64_sys_process_vm_writev.do_syscall_64.entry_SYSCALL_64_after_hwframe
8.48 +0.1 8.60 perf-profile.calltrace.cycles-pp.select_idle_sibling.select_task_rq_fair.select_task_rq.try_to_wake_up.autoremove_wake_function
10.27 +0.1 10.39 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.process_vm_writev.stress_vm_rw
10.12 +0.1 10.23 perf-profile.calltrace.cycles-pp.__x64_sys_process_vm_writev.do_syscall_64.entry_SYSCALL_64_after_hwframe.process_vm_writev.stress_vm_rw
10.24 +0.1 10.36 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.process_vm_writev.stress_vm_rw
10.10 +0.1 10.22 perf-profile.calltrace.cycles-pp.process_vm_rw.__x64_sys_process_vm_writev.do_syscall_64.entry_SYSCALL_64_after_hwframe.process_vm_writev
10.64 +0.1 10.77 perf-profile.calltrace.cycles-pp.process_vm_writev.stress_vm_rw
4.31 +0.2 4.46 perf-profile.calltrace.cycles-pp.sched_ttwu_pending.__flush_smp_call_function_queue.flush_smp_call_function_queue.do_idle.cpu_startup_entry
5.36 +0.2 5.52 perf-profile.calltrace.cycles-pp.flush_smp_call_function_queue.do_idle.cpu_startup_entry.start_secondary.common_startup_64
3.40 +0.2 3.57 perf-profile.calltrace.cycles-pp.ttwu_do_activate.sched_ttwu_pending.__flush_smp_call_function_queue.flush_smp_call_function_queue.do_idle
4.81 +0.2 4.99 perf-profile.calltrace.cycles-pp.__flush_smp_call_function_queue.flush_smp_call_function_queue.do_idle.cpu_startup_entry.start_secondary
16.66 +0.3 16.96 perf-profile.calltrace.cycles-pp.common_startup_64
16.57 +0.3 16.88 perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.common_startup_64
16.54 +0.3 16.84 perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.common_startup_64
16.58 +0.3 16.89 perf-profile.calltrace.cycles-pp.start_secondary.common_startup_64
76.34 -0.4 75.95 perf-profile.children.cycles-pp.do_syscall_64
76.51 -0.4 76.12 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
16.31 -0.3 16.00 perf-profile.children.cycles-pp.pipe_write
14.46 -0.3 14.16 perf-profile.children.cycles-pp.__wake_up_common
14.54 -0.3 14.24 perf-profile.children.cycles-pp.__wake_up_sync_key
13.74 -0.3 13.44 perf-profile.children.cycles-pp.autoremove_wake_function
13.72 -0.3 13.43 perf-profile.children.cycles-pp.try_to_wake_up
16.83 -0.3 16.57 perf-profile.children.cycles-pp.vfs_write
17.16 -0.2 16.91 perf-profile.children.cycles-pp.ksys_write
17.70 -0.2 17.45 perf-profile.children.cycles-pp.write
18.54 -0.2 18.31 perf-profile.children.cycles-pp.__clone
18.78 -0.2 18.58 perf-profile.children.cycles-pp.read
2.91 -0.2 2.72 perf-profile.children.cycles-pp._raw_spin_lock
13.88 -0.2 13.71 perf-profile.children.cycles-pp.pipe_read
14.54 -0.2 14.37 perf-profile.children.cycles-pp.vfs_read
9.93 -0.2 9.76 perf-profile.children.cycles-pp.schedule
14.70 -0.2 14.54 perf-profile.children.cycles-pp.ksys_read
0.24 -0.2 0.08 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
62.61 -0.2 62.46 perf-profile.children.cycles-pp.stress_vm_rw
23.98 -0.1 23.87 perf-profile.children.cycles-pp._copy_to_iter
24.25 -0.1 24.14 perf-profile.children.cycles-pp.copy_page_to_iter
3.16 -0.1 3.10 perf-profile.children.cycles-pp.enqueue_task_fair
2.61 -0.0 2.57 perf-profile.children.cycles-pp.update_load_avg
1.78 -0.0 1.74 perf-profile.children.cycles-pp.prepare_task_switch
0.28 -0.0 0.24 perf-profile.children.cycles-pp.update_rq_clock_task
2.31 -0.0 2.28 perf-profile.children.cycles-pp.syscall_exit_to_user_mode
0.38 -0.0 0.35 perf-profile.children.cycles-pp.wake_affine
0.82 -0.0 0.79 perf-profile.children.cycles-pp.update_rq_clock
0.89 -0.0 0.86 perf-profile.children.cycles-pp.asm_sysvec_call_function_single
1.43 -0.0 1.40 perf-profile.children.cycles-pp.switch_fpu_return
0.10 ± 4% -0.0 0.08 ± 3% perf-profile.children.cycles-pp.cpuacct_charge
0.21 ± 2% -0.0 0.19 ± 2% perf-profile.children.cycles-pp.task_h_load
0.13 ± 3% -0.0 0.11 perf-profile.children.cycles-pp.wakeup_preempt
0.95 -0.0 0.93 perf-profile.children.cycles-pp.prepare_to_wait_event
0.16 +0.0 0.17 perf-profile.children.cycles-pp.tick_nohz_idle_enter
0.62 +0.0 0.63 perf-profile.children.cycles-pp.entry_SYSCALL_64
0.29 +0.0 0.30 perf-profile.children.cycles-pp.nohz_run_idle_balance
0.92 +0.0 0.94 perf-profile.children.cycles-pp.mod_node_page_state
0.25 +0.0 0.27 perf-profile.children.cycles-pp.update_min_vruntime
0.77 +0.0 0.79 perf-profile.children.cycles-pp.__switch_to_asm
0.46 +0.0 0.48 perf-profile.children.cycles-pp.llist_reverse_order
6.27 +0.0 6.30 perf-profile.children.cycles-pp.cpuidle_enter
0.48 ± 2% +0.0 0.52 ± 2% perf-profile.children.cycles-pp.pick_next_task_idle
0.47 ± 2% +0.0 0.51 ± 2% perf-profile.children.cycles-pp.__update_idle_core
0.81 +0.0 0.85 perf-profile.children.cycles-pp.sched_mm_cid_migrate_to
0.09 ± 6% +0.0 0.13 ± 5% perf-profile.children.cycles-pp.generic_perform_write
3.52 +0.0 3.57 perf-profile.children.cycles-pp.schedule_idle
5.40 +0.0 5.45 perf-profile.children.cycles-pp._copy_from_iter
0.00 +0.1 0.05 ± 5% perf-profile.children.cycles-pp.copy_page_from_iter_atomic
0.09 ± 6% +0.1 0.14 ± 7% perf-profile.children.cycles-pp.shmem_file_write_iter
5.64 +0.1 5.69 perf-profile.children.cycles-pp.copy_page_from_iter
0.00 +0.1 0.06 ± 7% perf-profile.children.cycles-pp.ring_buffer_read_head
0.12 ± 6% +0.1 0.18 ± 6% perf-profile.children.cycles-pp.record__pushfn
6.80 +0.1 6.86 perf-profile.children.cycles-pp.cpuidle_idle_call
0.12 ± 6% +0.1 0.18 ± 6% perf-profile.children.cycles-pp.writen
0.00 +0.1 0.07 ± 10% perf-profile.children.cycles-pp.perf_mmap__read_head
7.43 +0.1 7.51 perf-profile.children.cycles-pp.select_idle_cpu
9.00 +0.1 9.09 perf-profile.children.cycles-pp.select_task_rq_fair
9.37 +0.1 9.46 perf-profile.children.cycles-pp.select_task_rq
0.18 ± 5% +0.1 0.29 ± 6% perf-profile.children.cycles-pp.perf_mmap__push
0.19 ± 5% +0.1 0.30 ± 6% perf-profile.children.cycles-pp.record__mmap_read_evlist
0.19 ± 5% +0.1 0.30 ± 6% perf-profile.children.cycles-pp.cmd_record
0.19 ± 6% +0.1 0.31 ± 6% perf-profile.children.cycles-pp.main
0.19 ± 6% +0.1 0.31 ± 6% perf-profile.children.cycles-pp.run_builtin
8.50 +0.1 8.62 perf-profile.children.cycles-pp.select_idle_sibling
10.12 +0.1 10.24 perf-profile.children.cycles-pp.__x64_sys_process_vm_writev
10.80 +0.1 10.92 perf-profile.children.cycles-pp.process_vm_writev
4.92 +0.1 5.07 perf-profile.children.cycles-pp.sched_ttwu_pending
5.43 +0.1 5.58 perf-profile.children.cycles-pp.flush_smp_call_function_queue
5.54 +0.2 5.70 perf-profile.children.cycles-pp.__flush_smp_call_function_queue
16.66 +0.3 16.96 perf-profile.children.cycles-pp.common_startup_64
16.66 +0.3 16.96 perf-profile.children.cycles-pp.cpu_startup_entry
16.63 +0.3 16.93 perf-profile.children.cycles-pp.do_idle
16.58 +0.3 16.89 perf-profile.children.cycles-pp.start_secondary
0.24 -0.2 0.08 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
23.76 -0.1 23.65 perf-profile.self.cycles-pp._copy_to_iter
1.59 -0.0 1.54 perf-profile.self.cycles-pp.prepare_task_switch
1.31 -0.0 1.28 perf-profile.self.cycles-pp.update_load_avg
0.36 -0.0 0.33 perf-profile.self.cycles-pp.switch_fpu_return
0.24 ± 2% -0.0 0.21 ± 2% perf-profile.self.cycles-pp.update_rq_clock_task
0.70 -0.0 0.67 perf-profile.self.cycles-pp.update_rq_clock
5.43 -0.0 5.40 perf-profile.self.cycles-pp.intel_idle
0.21 ± 2% -0.0 0.18 ± 2% perf-profile.self.cycles-pp.task_h_load
0.10 -0.0 0.08 perf-profile.self.cycles-pp.cpuacct_charge
0.17 -0.0 0.15 ± 3% perf-profile.self.cycles-pp.ttwu_queue_wakelist
0.27 -0.0 0.26 perf-profile.self.cycles-pp.try_to_wake_up
0.13 -0.0 0.12 perf-profile.self.cycles-pp.pick_next_task_fair
0.22 -0.0 0.21 perf-profile.self.cycles-pp.set_task_cpu
0.07 -0.0 0.06 perf-profile.self.cycles-pp.wakeup_preempt
0.16 ± 2% +0.0 0.18 ± 2% perf-profile.self.cycles-pp.menu_select
0.78 +0.0 0.80 perf-profile.self.cycles-pp.__switch_to
0.49 +0.0 0.50 perf-profile.self.cycles-pp.call_function_single_prep_ipi
0.84 +0.0 0.85 perf-profile.self.cycles-pp.mod_node_page_state
0.24 ± 2% +0.0 0.26 perf-profile.self.cycles-pp.remove_entity_load_avg
0.24 +0.0 0.26 ± 2% perf-profile.self.cycles-pp.update_min_vruntime
0.46 +0.0 0.48 perf-profile.self.cycles-pp.llist_reverse_order
0.55 +0.0 0.57 perf-profile.self.cycles-pp.enqueue_entity
0.76 +0.0 0.79 perf-profile.self.cycles-pp.__switch_to_asm
0.37 ± 3% +0.0 0.40 ± 2% perf-profile.self.cycles-pp.__update_idle_core
0.81 +0.0 0.85 perf-profile.self.cycles-pp.sched_mm_cid_migrate_to
1.12 +0.0 1.16 perf-profile.self.cycles-pp.select_idle_core
5.34 +0.0 5.39 perf-profile.self.cycles-pp._copy_from_iter
0.48 +0.1 0.53 perf-profile.self.cycles-pp.select_idle_cpu
0.00 +0.1 0.05 ± 5% perf-profile.self.cycles-pp.copy_page_from_iter_atomic
0.00 +0.1 0.06 ± 10% perf-profile.self.cycles-pp.ring_buffer_read_head
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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0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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