Hello,
kernel test robot noticed a 3.8% improvement of stress-ng.unshare.ops_per_sec on:
commit: 23da2ad64dbe9f3fab10af90484fe41e144337b1 ("rcu/exp: Remove rcu_par_gp_wq")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
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: unshare
cpufreq_governor: performance
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240301/202403011754.cef7ce78-oliver.sang@xxxxxxxxx
=========================================================================================
compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
gcc-12/performance/x86_64-rhel-8.3/100%/debian-12-x86_64-20240206.cgz/lkp-spr-2sp4/unshare/stress-ng/60s
commit:
b67cffcbbf ("rcu/exp: Handle parallel exp gp kworkers affinity")
23da2ad64d ("rcu/exp: Remove rcu_par_gp_wq")
b67cffcbbf9dc759 23da2ad64dbe9f3fab10af90484
---------------- ---------------------------
%stddev %change %stddev
\ | \
4083498 +41.9% 5794411 cpuidle..usage
39791 +72.6% 68680 vmstat.system.cs
94731 +4.5% 98951 vmstat.system.in
162611 -2.4% 158778 proc-vmstat.nr_kernel_stack
83884 +1.6% 85234 proc-vmstat.nr_slab_reclaimable
553698 +1.6% 562348 proc-vmstat.nr_slab_unreclaimable
1220 ± 4% +40.6% 1716 ± 4% perf-c2c.DRAM.local
3070 ± 4% +38.1% 4238 ± 2% perf-c2c.DRAM.remote
2481 ± 5% +32.7% 3291 ± 3% perf-c2c.HITM.local
1442 ± 4% +35.9% 1960 ± 3% perf-c2c.HITM.remote
3189 ± 2% -54.1% 1464 ± 3% stress-ng.time.involuntary_context_switches
17353 +10.2% 19130 stress-ng.time.voluntary_context_switches
3427 +3.7% 3552 stress-ng.unshare.ops
55.76 +3.8% 57.89 stress-ng.unshare.ops_per_sec
107475 ± 9% +13.3% 121741 ± 8% sched_debug.cpu.avg_idle.stddev
6510 +65.0% 10742 sched_debug.cpu.nr_switches.avg
49403 ± 32% -21.8% 38646 ± 5% sched_debug.cpu.nr_switches.max
12.11 ± 4% -15.7% 10.21 ± 8% sched_debug.cpu.nr_uninterruptible.avg
30.76 ± 11% -22.3% 23.90 ± 13% sched_debug.cpu.nr_uninterruptible.stddev
2.81 +7.8% 3.03 perf-stat.i.MPKI
28.30 +2.8 31.06 perf-stat.i.cache-miss-rate%
39928468 +6.1% 42351198 perf-stat.i.cache-misses
1.395e+08 -2.9% 1.355e+08 perf-stat.i.cache-references
40743 +75.8% 71627 perf-stat.i.context-switches
2.59 -3.0% 2.51 perf-stat.i.cpi
770.16 ± 3% +28.8% 992.27 perf-stat.i.cpu-migrations
1001 ± 2% -9.0% 911.25 perf-stat.i.cycles-between-cache-misses
0.43 +2.4% 0.44 perf-stat.i.ipc
2.59 +6.2% 2.74 perf-stat.overall.MPKI
28.74 +2.6 31.30 perf-stat.overall.cache-miss-rate%
1085 ± 3% -8.5% 993.69 perf-stat.overall.cycles-between-cache-misses
39937502 +5.0% 41932438 perf-stat.ps.cache-misses
1.39e+08 -3.6% 1.34e+08 perf-stat.ps.cache-references
40364 +74.2% 70308 perf-stat.ps.context-switches
774.79 ± 3% +27.7% 989.35 perf-stat.ps.cpu-migrations
50.99 -2.7 48.26 perf-profile.calltrace.cycles-pp.__x64_sys_unshare.do_syscall_64.entry_SYSCALL_64_after_hwframe.unshare
50.99 -2.7 48.26 perf-profile.calltrace.cycles-pp.ksys_unshare.__x64_sys_unshare.do_syscall_64.entry_SYSCALL_64_after_hwframe.unshare
51.46 -2.7 48.74 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.unshare
51.46 -2.7 48.74 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.unshare
51.49 -2.7 48.77 perf-profile.calltrace.cycles-pp.unshare
46.23 -2.4 43.84 perf-profile.calltrace.cycles-pp.unshare_nsproxy_namespaces.ksys_unshare.__x64_sys_unshare.do_syscall_64.entry_SYSCALL_64_after_hwframe
46.20 -2.4 43.82 perf-profile.calltrace.cycles-pp.create_new_namespaces.unshare_nsproxy_namespaces.ksys_unshare.__x64_sys_unshare.do_syscall_64
41.66 -2.3 39.38 perf-profile.calltrace.cycles-pp.copy_mnt_ns.create_new_namespaces.unshare_nsproxy_namespaces.ksys_unshare.__x64_sys_unshare
28.30 -1.8 26.52 ± 3% perf-profile.calltrace.cycles-pp.down_write.copy_mnt_ns.create_new_namespaces.unshare_nsproxy_namespaces.ksys_unshare
28.29 -1.8 26.52 ± 3% perf-profile.calltrace.cycles-pp.rwsem_down_write_slowpath.down_write.copy_mnt_ns.create_new_namespaces.unshare_nsproxy_namespaces
25.26 ± 2% -1.4 23.85 ± 3% perf-profile.calltrace.cycles-pp.rwsem_optimistic_spin.rwsem_down_write_slowpath.down_write.copy_mnt_ns.create_new_namespaces
2.03 -0.9 1.13 ± 3% perf-profile.calltrace.cycles-pp.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
1.69 -0.8 0.85 ± 3% perf-profile.calltrace.cycles-pp.process_one_work.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
9.61 -0.6 9.03 perf-profile.calltrace.cycles-pp.__memset.pcpu_alloc.alloc_vfsmnt.clone_mnt.copy_tree
11.63 -0.6 11.05 perf-profile.calltrace.cycles-pp.alloc_vfsmnt.clone_mnt.copy_tree.copy_mnt_ns.create_new_namespaces
12.73 -0.6 12.16 perf-profile.calltrace.cycles-pp.clone_mnt.copy_tree.copy_mnt_ns.create_new_namespaces.unshare_nsproxy_namespaces
16.04 -0.5 15.49 perf-profile.calltrace.cycles-pp.rwsem_optimistic_spin.rwsem_down_write_slowpath.down_write.put_mnt_ns.free_nsproxy
10.57 -0.5 10.03 perf-profile.calltrace.cycles-pp.pcpu_alloc.alloc_vfsmnt.clone_mnt.copy_tree.copy_mnt_ns
13.21 -0.5 12.70 perf-profile.calltrace.cycles-pp.copy_tree.copy_mnt_ns.create_new_namespaces.unshare_nsproxy_namespaces.ksys_unshare
14.64 -0.4 14.21 perf-profile.calltrace.cycles-pp.down_write.put_mnt_ns.free_nsproxy.do_exit.do_group_exit
14.64 -0.4 14.21 perf-profile.calltrace.cycles-pp.rwsem_down_write_slowpath.down_write.put_mnt_ns.free_nsproxy.do_exit
4.11 ± 4% -0.3 3.77 ± 2% perf-profile.calltrace.cycles-pp.put_mnt_ns.free_nsproxy.ksys_unshare.__x64_sys_unshare.do_syscall_64
4.12 ± 4% -0.3 3.78 ± 2% perf-profile.calltrace.cycles-pp.free_nsproxy.ksys_unshare.__x64_sys_unshare.do_syscall_64.entry_SYSCALL_64_after_hwframe
10.64 -0.3 10.33 perf-profile.calltrace.cycles-pp.osq_lock.rwsem_optimistic_spin.rwsem_down_write_slowpath.down_write.put_mnt_ns
3.09 ± 4% -0.3 2.79 ± 3% perf-profile.calltrace.cycles-pp.down_write.put_mnt_ns.free_nsproxy.ksys_unshare.__x64_sys_unshare
3.09 ± 4% -0.3 2.79 ± 3% perf-profile.calltrace.cycles-pp.rwsem_down_write_slowpath.down_write.put_mnt_ns.free_nsproxy.ksys_unshare
4.54 -0.2 4.37 perf-profile.calltrace.cycles-pp.rwsem_spin_on_owner.rwsem_optimistic_spin.rwsem_down_write_slowpath.down_write.copy_mnt_ns
2.55 -0.1 2.40 perf-profile.calltrace.cycles-pp.rwsem_spin_on_owner.rwsem_down_write_slowpath.down_write.copy_mnt_ns.create_new_namespaces
0.79 ± 2% -0.1 0.72 ± 4% perf-profile.calltrace.cycles-pp.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state.cpuidle_enter
0.77 ± 2% -0.1 0.70 ± 3% perf-profile.calltrace.cycles-pp.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state
1.78 ± 2% -0.1 1.71 ± 2% perf-profile.calltrace.cycles-pp.pcpu_alloc.__percpu_init_rwsem.alloc_super.sget_fc.get_tree_nodev
1.93 ± 2% -0.1 1.86 ± 2% perf-profile.calltrace.cycles-pp.alloc_super.sget_fc.get_tree_nodev.vfs_get_tree.fc_mount
1.96 ± 2% -0.1 1.89 ± 2% perf-profile.calltrace.cycles-pp.sget_fc.get_tree_nodev.vfs_get_tree.fc_mount.mq_init_ns
1.54 ± 2% -0.1 1.47 ± 2% perf-profile.calltrace.cycles-pp.__memset.pcpu_alloc.__percpu_init_rwsem.alloc_super.sget_fc
1.83 ± 2% -0.1 1.76 ± 2% perf-profile.calltrace.cycles-pp.__percpu_init_rwsem.alloc_super.sget_fc.get_tree_nodev.vfs_get_tree
0.82 +0.1 0.88 perf-profile.calltrace.cycles-pp.unlink_file_vma.free_pgtables.exit_mmap.__mmput.exit_mm
0.68 ± 3% +0.1 0.75 ± 3% perf-profile.calltrace.cycles-pp.mnt_get_writers.cleanup_mnt.task_work_run.do_exit.do_group_exit
0.90 ± 5% +0.1 0.99 ± 2% perf-profile.calltrace.cycles-pp.anon_vma_interval_tree_insert.anon_vma_clone.anon_vma_fork.dup_mmap.dup_mm
1.28 ± 2% +0.1 1.38 ± 3% perf-profile.calltrace.cycles-pp.mnt_get_count.mntput_no_expire.namespace_unlock.put_mnt_ns.free_nsproxy
1.00 ± 3% +0.1 1.09 ± 3% perf-profile.calltrace.cycles-pp.cleanup_mnt.task_work_run.do_exit.do_group_exit.__x64_sys_exit_group
1.04 ± 3% +0.1 1.14 ± 3% perf-profile.calltrace.cycles-pp.task_work_run.do_exit.do_group_exit.__x64_sys_exit_group.do_syscall_64
1.50 ± 3% +0.1 1.64 ± 2% perf-profile.calltrace.cycles-pp.anon_vma_clone.anon_vma_fork.dup_mmap.dup_mm.copy_process
1.94 ± 3% +0.2 2.11 ± 2% perf-profile.calltrace.cycles-pp.anon_vma_fork.dup_mmap.dup_mm.copy_process.kernel_clone
1.80 ± 5% +0.2 2.00 ± 2% perf-profile.calltrace.cycles-pp.unmap_vmas.exit_mmap.__mmput.exit_mm.do_exit
2.69 ± 2% +0.3 2.96 ± 3% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.free_percpu.delayed_free_vfsmnt.rcu_do_batch
2.78 ± 2% +0.3 3.06 ± 4% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.free_percpu.delayed_free_vfsmnt.rcu_do_batch.rcu_core
2.90 ± 2% +0.3 3.18 ± 4% perf-profile.calltrace.cycles-pp.free_percpu.delayed_free_vfsmnt.rcu_do_batch.rcu_core.__do_softirq
2.98 ± 2% +0.3 3.26 ± 4% perf-profile.calltrace.cycles-pp.delayed_free_vfsmnt.rcu_do_batch.rcu_core.__do_softirq.irq_exit_rcu
3.20 ± 2% +0.3 3.50 ± 4% perf-profile.calltrace.cycles-pp.rcu_do_batch.rcu_core.__do_softirq.irq_exit_rcu.sysvec_apic_timer_interrupt
3.23 ± 2% +0.3 3.54 ± 4% perf-profile.calltrace.cycles-pp.rcu_core.__do_softirq.irq_exit_rcu.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt
6.58 ± 2% +0.3 6.90 perf-profile.calltrace.cycles-pp.dup_mm.copy_process.kernel_clone.__do_sys_clone.do_syscall_64
5.06 ± 2% +0.3 5.37 perf-profile.calltrace.cycles-pp.dup_mmap.dup_mm.copy_process.kernel_clone.__do_sys_clone
6.90 ± 2% +0.3 7.23 perf-profile.calltrace.cycles-pp.copy_process.kernel_clone.__do_sys_clone.do_syscall_64.entry_SYSCALL_64_after_hwframe
3.50 ± 2% +0.4 3.85 ± 4% perf-profile.calltrace.cycles-pp.irq_exit_rcu.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state.cpuidle_enter
3.47 ± 2% +0.4 3.83 ± 4% perf-profile.calltrace.cycles-pp.__do_softirq.irq_exit_rcu.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state
7.24 ± 2% +0.4 7.61 perf-profile.calltrace.cycles-pp.__do_sys_clone.do_syscall_64.entry_SYSCALL_64_after_hwframe._Fork
7.24 ± 2% +0.4 7.61 perf-profile.calltrace.cycles-pp.kernel_clone.__do_sys_clone.do_syscall_64.entry_SYSCALL_64_after_hwframe._Fork
7.25 ± 2% +0.4 7.62 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe._Fork
7.25 ± 2% +0.4 7.62 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe._Fork
7.66 ± 2% +0.4 8.06 perf-profile.calltrace.cycles-pp._Fork
6.98 ± 2% +0.5 7.44 ± 2% perf-profile.calltrace.cycles-pp.exit_mmap.__mmput.exit_mm.do_exit.do_group_exit
7.00 ± 2% +0.5 7.47 ± 2% perf-profile.calltrace.cycles-pp.__mmput.exit_mm.do_exit.do_group_exit.__x64_sys_exit_group
7.00 ± 2% +0.5 7.47 ± 2% perf-profile.calltrace.cycles-pp.exit_mm.do_exit.do_group_exit.__x64_sys_exit_group.do_syscall_64
0.87 +0.5 1.39 ± 2% perf-profile.calltrace.cycles-pp.intel_idle_xstate.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle
2.63 +0.5 3.16 ± 2% perf-profile.calltrace.cycles-pp.kthread.ret_from_fork.ret_from_fork_asm
2.63 +0.5 3.16 ± 2% perf-profile.calltrace.cycles-pp.ret_from_fork.ret_from_fork_asm
2.63 +0.5 3.16 ± 2% perf-profile.calltrace.cycles-pp.ret_from_fork_asm
0.00 +0.6 0.57 ± 4% perf-profile.calltrace.cycles-pp.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
6.28 ± 2% +0.9 7.15 ± 3% perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry
6.28 ± 2% +1.0 7.24 ± 3% perf-profile.calltrace.cycles-pp.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary
6.67 ± 2% +1.2 7.89 ± 3% perf-profile.calltrace.cycles-pp.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
0.00 +1.4 1.38 perf-profile.calltrace.cycles-pp.kthread_worker_fn.kthread.ret_from_fork.ret_from_fork_asm
7.89 +1.6 9.45 ± 2% perf-profile.calltrace.cycles-pp.secondary_startup_64_no_verify
7.25 ± 3% +1.7 8.92 ± 4% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
7.25 ± 3% +1.7 8.92 ± 4% perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64_no_verify
7.24 ± 3% +1.7 8.92 ± 4% perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
50.99 -2.7 48.26 perf-profile.children.cycles-pp.__x64_sys_unshare
50.99 -2.7 48.26 perf-profile.children.cycles-pp.ksys_unshare
51.50 -2.7 48.78 perf-profile.children.cycles-pp.unshare
46.08 -2.5 43.59 perf-profile.children.cycles-pp.rwsem_down_write_slowpath
46.74 -2.5 44.29 perf-profile.children.cycles-pp.down_write
46.23 -2.4 43.84 perf-profile.children.cycles-pp.unshare_nsproxy_namespaces
46.20 -2.4 43.82 perf-profile.children.cycles-pp.create_new_namespaces
41.66 -2.3 39.38 perf-profile.children.cycles-pp.copy_mnt_ns
86.30 -2.2 84.06 perf-profile.children.cycles-pp.do_syscall_64
86.31 -2.2 84.06 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
41.36 -2.0 39.41 ± 2% perf-profile.children.cycles-pp.rwsem_optimistic_spin
31.34 -1.5 29.80 ± 2% perf-profile.children.cycles-pp.osq_lock
2.03 -0.9 1.13 ± 3% perf-profile.children.cycles-pp.worker_thread
1.69 -0.8 0.85 ± 3% perf-profile.children.cycles-pp.process_one_work
13.87 -0.7 13.16 perf-profile.children.cycles-pp.__memset
1.67 -0.7 0.99 perf-profile.children.cycles-pp.load_balance
1.50 -0.7 0.84 ± 2% perf-profile.children.cycles-pp.pick_next_task_fair
1.53 -0.7 0.88 perf-profile.children.cycles-pp.find_busiest_group
1.52 -0.6 0.87 perf-profile.children.cycles-pp.update_sd_lb_stats
15.36 -0.6 14.71 perf-profile.children.cycles-pp.pcpu_alloc
1.47 -0.6 0.82 ± 2% perf-profile.children.cycles-pp.newidle_balance
1.44 -0.6 0.82 ± 2% perf-profile.children.cycles-pp.update_sg_lb_stats
12.30 -0.6 11.69 perf-profile.children.cycles-pp.alloc_vfsmnt
13.98 -0.6 13.38 perf-profile.children.cycles-pp.rwsem_spin_on_owner
12.73 -0.6 12.16 perf-profile.children.cycles-pp.clone_mnt
13.21 -0.5 12.70 perf-profile.children.cycles-pp.copy_tree
2.28 ± 2% -0.5 1.79 perf-profile.children.cycles-pp.__schedule
0.79 ± 3% -0.5 0.30 perf-profile.children.cycles-pp.schedule_preempt_disabled
1.55 ± 2% -0.3 1.20 perf-profile.children.cycles-pp.schedule
0.84 ± 3% -0.2 0.64 ± 4% perf-profile.children.cycles-pp.sysvec_call_function_single
0.92 ± 3% -0.2 0.73 ± 3% perf-profile.children.cycles-pp.asm_sysvec_call_function_single
0.90 ± 3% -0.2 0.72 ± 3% perf-profile.children.cycles-pp._nohz_idle_balance
0.21 ± 2% -0.2 0.05 perf-profile.children.cycles-pp.schedule_timeout
0.32 ± 4% -0.1 0.18 ± 5% perf-profile.children.cycles-pp.synchronize_rcu_expedited
0.18 ± 6% -0.1 0.05 ± 8% perf-profile.children.cycles-pp.exp_funnel_lock
0.23 ± 3% -0.1 0.10 perf-profile.children.cycles-pp.rcu_exp_wait_wake
0.15 ± 4% -0.1 0.06 ± 8% perf-profile.children.cycles-pp.__mutex_lock
0.34 ± 5% -0.1 0.25 ± 4% perf-profile.children.cycles-pp.raw_spin_rq_lock_nested
0.20 ± 5% -0.1 0.11 ± 5% perf-profile.children.cycles-pp.cpu_util
1.10 -0.1 1.02 ± 3% perf-profile.children.cycles-pp.hrtimer_interrupt
0.48 ± 3% -0.1 0.39 ± 4% perf-profile.children.cycles-pp.update_blocked_averages
1.13 -0.1 1.04 ± 3% perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt
0.79 -0.1 0.71 ± 3% perf-profile.children.cycles-pp.__hrtimer_run_queues
0.22 ± 2% -0.1 0.15 ± 6% perf-profile.children.cycles-pp.idle_cpu
1.93 ± 2% -0.1 1.86 ± 2% perf-profile.children.cycles-pp.alloc_super
1.83 ± 2% -0.1 1.76 ± 2% perf-profile.children.cycles-pp.__percpu_init_rwsem
1.96 ± 2% -0.1 1.89 ± 2% perf-profile.children.cycles-pp.sget_fc
0.16 ± 6% -0.1 0.10 perf-profile.children.cycles-pp.smp_call_function_single
0.31 ± 3% -0.1 0.25 ± 4% perf-profile.children.cycles-pp.__sync_rcu_exp_select_node_cpus
0.66 ± 2% -0.1 0.60 ± 3% perf-profile.children.cycles-pp.tick_nohz_highres_handler
0.56 ± 3% -0.1 0.51 ± 4% perf-profile.children.cycles-pp.tick_sched_handle
0.56 ± 2% -0.0 0.51 ± 4% perf-profile.children.cycles-pp.update_process_times
0.13 ± 5% -0.0 0.08 ± 7% perf-profile.children.cycles-pp._find_next_and_bit
0.32 ± 2% -0.0 0.28 ± 5% perf-profile.children.cycles-pp.scheduler_tick
0.10 ± 4% -0.0 0.07 ± 7% perf-profile.children.cycles-pp.rcu_gp_fqs_loop
0.11 ± 6% -0.0 0.07 ± 9% perf-profile.children.cycles-pp.rcu_gp_kthread
0.12 ± 8% -0.0 0.09 ± 6% perf-profile.children.cycles-pp.ct_idle_exit
0.12 ± 6% -0.0 0.09 ± 8% perf-profile.children.cycles-pp.ct_kernel_enter
0.09 ± 7% -0.0 0.06 ± 7% perf-profile.children.cycles-pp.__wait_for_common
0.09 ± 10% -0.0 0.06 ± 9% perf-profile.children.cycles-pp.ct_kernel_exit_state
0.36 ± 3% -0.0 0.33 ± 5% perf-profile.children.cycles-pp.rebalance_domains
0.08 ± 8% -0.0 0.06 ± 9% perf-profile.children.cycles-pp.force_qs_rnp
0.06 ± 11% +0.0 0.08 ± 6% perf-profile.children.cycles-pp.run_rebalance_domains
0.13 ± 6% +0.0 0.15 ± 5% perf-profile.children.cycles-pp.activate_task
0.08 ± 6% +0.0 0.09 ± 5% perf-profile.children.cycles-pp.find_unlink_vmap_area
0.07 ± 6% +0.0 0.09 ± 6% perf-profile.children.cycles-pp.rcu_note_context_switch
0.15 ± 2% +0.0 0.17 ± 4% perf-profile.children.cycles-pp.delayed_vfree_work
0.23 ± 2% +0.0 0.25 ± 2% perf-profile.children.cycles-pp.__percpu_counter_sum
0.28 ± 2% +0.0 0.30 ± 3% perf-profile.children.cycles-pp.__rb_insert_augmented
0.04 ± 45% +0.0 0.06 ± 7% perf-profile.children.cycles-pp.tick_nohz_irq_exit
0.39 +0.0 0.41 ± 2% perf-profile.children.cycles-pp.__memcg_slab_post_alloc_hook
0.40 ± 2% +0.0 0.42 ± 3% perf-profile.children.cycles-pp.__vm_area_free
0.06 ± 7% +0.0 0.09 ± 5% perf-profile.children.cycles-pp.tick_nohz_next_event
0.10 ± 8% +0.0 0.13 ± 5% perf-profile.children.cycles-pp.update_rq_clock_task
0.12 ± 12% +0.0 0.15 ± 8% perf-profile.children.cycles-pp.irq_enter_rcu
0.44 ± 2% +0.0 0.48 ± 2% perf-profile.children.cycles-pp.mod_objcg_state
0.26 ± 4% +0.0 0.30 ± 5% perf-profile.children.cycles-pp.find_idlest_group
0.08 ± 5% +0.0 0.12 ± 3% perf-profile.children.cycles-pp.tick_nohz_get_sleep_length
0.25 ± 4% +0.0 0.29 ± 5% perf-profile.children.cycles-pp.update_sg_wakeup_stats
0.34 ± 3% +0.0 0.38 ± 4% perf-profile.children.cycles-pp.wake_up_new_task
0.30 ± 3% +0.0 0.34 ± 5% perf-profile.children.cycles-pp.find_idlest_cpu
0.12 ± 5% +0.0 0.16 ± 4% perf-profile.children.cycles-pp.rcu_report_exp_cpu_mult
0.23 ± 6% +0.0 0.28 ± 6% perf-profile.children.cycles-pp.clockevents_program_event
0.01 ±223% +0.0 0.06 ± 8% perf-profile.children.cycles-pp.read_tsc
0.06 ± 6% +0.1 0.11 ± 8% perf-profile.children.cycles-pp.__switch_to
0.06 ± 11% +0.1 0.11 ± 8% perf-profile.children.cycles-pp.tick_nohz_restart_sched_tick
0.83 +0.1 0.88 perf-profile.children.cycles-pp.unlink_file_vma
0.00 +0.1 0.06 perf-profile.children.cycles-pp.llist_add_batch
0.36 ± 7% +0.1 0.42 ± 7% perf-profile.children.cycles-pp.ktime_get
0.08 ± 11% +0.1 0.14 ± 4% perf-profile.children.cycles-pp.tick_nohz_stop_tick
0.00 +0.1 0.06 ± 7% perf-profile.children.cycles-pp.__hrtimer_start_range_ns
0.00 +0.1 0.06 ± 7% perf-profile.children.cycles-pp.available_idle_cpu
0.02 ±141% +0.1 0.09 ± 10% perf-profile.children.cycles-pp.lapic_next_deadline
0.00 +0.1 0.07 ± 6% perf-profile.children.cycles-pp.call_cpuidle
0.00 +0.1 0.07 ± 6% perf-profile.children.cycles-pp.need_update
0.81 ± 2% +0.1 0.88 ± 3% perf-profile.children.cycles-pp.__memcg_slab_free_hook
0.00 +0.1 0.08 ± 8% perf-profile.children.cycles-pp.llist_reverse_order
0.00 +0.1 0.08 ± 4% perf-profile.children.cycles-pp.quiet_vmstat
1.18 +0.1 1.26 ± 2% perf-profile.children.cycles-pp._find_next_bit
0.09 ± 10% +0.1 0.17 ± 4% perf-profile.children.cycles-pp.tick_nohz_idle_exit
0.49 ± 2% +0.1 0.57 ± 4% perf-profile.children.cycles-pp.smpboot_thread_fn
0.18 ± 4% +0.1 0.27 ± 3% perf-profile.children.cycles-pp.menu_select
0.00 +0.1 0.08 ± 5% perf-profile.children.cycles-pp.kthread_flush_work
0.93 ± 3% +0.1 1.02 ± 3% perf-profile.children.cycles-pp.mnt_get_writers
0.00 +0.1 0.09 ± 4% perf-profile.children.cycles-pp.select_task_rq
0.06 ± 8% +0.1 0.15 ± 3% perf-profile.children.cycles-pp.__smp_call_single_queue
0.90 ± 5% +0.1 1.00 ± 2% perf-profile.children.cycles-pp.anon_vma_interval_tree_insert
0.00 +0.1 0.10 ± 4% perf-profile.children.cycles-pp.call_function_single_prep_ipi
0.37 ± 3% +0.1 0.47 ± 5% perf-profile.children.cycles-pp.run_ksoftirqd
0.32 ± 2% +0.1 0.42 ± 4% perf-profile.children.cycles-pp.select_task_rq_fair
0.21 ± 3% +0.1 0.31 ± 4% perf-profile.children.cycles-pp._raw_spin_lock_irq
1.42 ± 3% +0.1 1.53 ± 3% perf-profile.children.cycles-pp.cleanup_mnt
0.10 ± 9% +0.1 0.20 ± 3% perf-profile.children.cycles-pp.tick_nohz_idle_stop_tick
1.46 ± 2% +0.1 1.58 ± 3% perf-profile.children.cycles-pp.task_work_run
0.00 +0.1 0.12 ± 9% perf-profile.children.cycles-pp.hrtimer_start_range_ns
1.80 ± 2% +0.1 1.92 ± 2% perf-profile.children.cycles-pp.mnt_get_count
1.51 ± 3% +0.1 1.64 ± 2% perf-profile.children.cycles-pp.anon_vma_clone
0.38 ± 3% +0.1 0.52 ± 2% perf-profile.children.cycles-pp.intel_idle
0.08 ± 12% +0.1 0.22 ± 6% perf-profile.children.cycles-pp.sched_ttwu_pending
0.00 +0.2 0.15 ± 4% perf-profile.children.cycles-pp.ttwu_queue_wakelist
1.95 ± 3% +0.2 2.11 ± 2% perf-profile.children.cycles-pp.anon_vma_fork
0.23 ± 3% +0.2 0.40 ± 3% perf-profile.children.cycles-pp.sync_rcu_exp_select_cpus
0.23 ± 3% +0.2 0.40 ± 3% perf-profile.children.cycles-pp.wait_rcu_exp_gp
0.20 ± 7% +0.2 0.37 ± 2% perf-profile.children.cycles-pp.try_to_wake_up
1.80 ± 5% +0.2 2.00 ± 2% perf-profile.children.cycles-pp.unmap_vmas
0.16 ± 6% +0.2 0.37 ± 6% perf-profile.children.cycles-pp.__flush_smp_call_function_queue
0.10 ± 6% +0.2 0.34 ± 5% perf-profile.children.cycles-pp.flush_smp_call_function_queue
0.00 +0.2 0.25 ± 2% perf-profile.children.cycles-pp.kthread_queue_work
5.07 ± 2% +0.3 5.38 perf-profile.children.cycles-pp.dup_mmap
6.58 ± 2% +0.3 6.90 perf-profile.children.cycles-pp.dup_mm
6.90 ± 2% +0.3 7.24 perf-profile.children.cycles-pp.copy_process
3.49 +0.4 3.85 ± 4% perf-profile.children.cycles-pp.delayed_free_vfsmnt
3.49 +0.4 3.85 ± 4% perf-profile.children.cycles-pp.free_percpu
7.26 ± 2% +0.4 7.62 perf-profile.children.cycles-pp.kernel_clone
7.24 ± 2% +0.4 7.61 perf-profile.children.cycles-pp.__do_sys_clone
3.80 +0.4 4.18 ± 4% perf-profile.children.cycles-pp.rcu_do_batch
3.86 +0.4 4.24 ± 4% perf-profile.children.cycles-pp.rcu_core
7.69 ± 2% +0.4 8.08 perf-profile.children.cycles-pp._Fork
4.32 +0.4 4.75 ± 3% perf-profile.children.cycles-pp._raw_spin_lock_irqsave
6.99 ± 2% +0.5 7.45 ± 2% perf-profile.children.cycles-pp.exit_mmap
7.00 ± 2% +0.5 7.48 ± 2% perf-profile.children.cycles-pp.__mmput
7.02 ± 2% +0.5 7.49 ± 2% perf-profile.children.cycles-pp.exit_mm
0.89 +0.5 1.42 ± 2% perf-profile.children.cycles-pp.intel_idle_xstate
2.63 +0.5 3.16 ± 2% perf-profile.children.cycles-pp.kthread
2.91 +0.6 3.46 ± 2% perf-profile.children.cycles-pp.ret_from_fork
2.94 +0.6 3.49 perf-profile.children.cycles-pp.ret_from_fork_asm
5.65 ± 5% +0.6 6.21 ± 4% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
6.70 +0.9 7.63 ± 2% perf-profile.children.cycles-pp.cpuidle_enter
6.70 +0.9 7.63 ± 2% perf-profile.children.cycles-pp.cpuidle_enter_state
7.16 +1.2 8.33 ± 2% perf-profile.children.cycles-pp.cpuidle_idle_call
0.00 +1.4 1.38 perf-profile.children.cycles-pp.kthread_worker_fn
7.89 +1.6 9.45 ± 2% perf-profile.children.cycles-pp.do_idle
7.89 +1.6 9.45 ± 2% perf-profile.children.cycles-pp.cpu_startup_entry
7.89 +1.6 9.45 ± 2% perf-profile.children.cycles-pp.secondary_startup_64_no_verify
7.25 ± 3% +1.7 8.92 ± 4% perf-profile.children.cycles-pp.start_secondary
31.11 -1.5 29.59 ± 2% perf-profile.self.cycles-pp.osq_lock
13.68 -0.7 12.96 perf-profile.self.cycles-pp.__memset
13.86 -0.6 13.27 perf-profile.self.cycles-pp.rwsem_spin_on_owner
1.06 -0.4 0.61 ± 2% perf-profile.self.cycles-pp.update_sg_lb_stats
0.17 ± 5% -0.1 0.10 ± 4% perf-profile.self.cycles-pp.cpu_util
0.21 -0.1 0.14 ± 4% perf-profile.self.cycles-pp.idle_cpu
0.12 ± 7% -0.1 0.07 ± 5% perf-profile.self.cycles-pp.smp_call_function_single
0.15 ± 7% -0.0 0.11 ± 6% perf-profile.self.cycles-pp.__sync_rcu_exp_select_node_cpus
0.11 ± 6% -0.0 0.07 ± 8% perf-profile.self.cycles-pp._find_next_and_bit
0.41 ± 2% -0.0 0.37 ± 3% perf-profile.self.cycles-pp.alloc_vfsmnt
0.09 ± 10% -0.0 0.06 ± 11% perf-profile.self.cycles-pp.ct_kernel_exit_state
0.08 ± 4% -0.0 0.06 ± 8% perf-profile.self.cycles-pp.rcu_report_exp_cpu_mult
0.14 ± 6% -0.0 0.12 ± 6% perf-profile.self.cycles-pp.update_rq_clock
0.20 ± 3% +0.0 0.22 ± 2% perf-profile.self.cycles-pp.filemap_map_pages
0.14 ± 4% +0.0 0.16 ± 5% perf-profile.self.cycles-pp.anon_vma_fork
0.14 ± 4% +0.0 0.16 ± 6% perf-profile.self.cycles-pp.unmap_single_vma
0.08 ± 10% +0.0 0.10 ± 5% perf-profile.self.cycles-pp.update_rq_clock_task
0.22 ± 5% +0.0 0.25 ± 6% perf-profile.self.cycles-pp.update_sg_wakeup_stats
0.47 ± 3% +0.0 0.50 ± 3% perf-profile.self.cycles-pp.__memcg_slab_free_hook
0.08 ± 4% +0.0 0.12 ± 6% perf-profile.self.cycles-pp.menu_select
0.02 ±141% +0.0 0.06 ± 8% perf-profile.self.cycles-pp.tick_nohz_next_event
0.06 ± 8% +0.0 0.10 ± 7% perf-profile.self.cycles-pp.__switch_to
0.01 ±223% +0.0 0.06 ± 8% perf-profile.self.cycles-pp.read_tsc
0.00 +0.1 0.06 perf-profile.self.cycles-pp.llist_add_batch
0.90 ± 2% +0.1 0.96 ± 3% perf-profile.self.cycles-pp._find_next_bit
0.00 +0.1 0.06 ± 6% perf-profile.self.cycles-pp.newidle_balance
0.00 +0.1 0.06 ± 6% perf-profile.self.cycles-pp.try_to_wake_up
0.68 ± 3% +0.1 0.74 ± 3% perf-profile.self.cycles-pp.mnt_get_writers
0.19 ± 3% +0.1 0.25 ± 4% perf-profile.self.cycles-pp._raw_spin_lock_irq
0.00 +0.1 0.06 ± 7% perf-profile.self.cycles-pp.available_idle_cpu
0.00 +0.1 0.07 ± 7% perf-profile.self.cycles-pp.kthread_worker_fn
0.00 +0.1 0.07 ± 5% perf-profile.self.cycles-pp.call_cpuidle
0.96 ± 2% +0.1 1.03 ± 2% perf-profile.self.cycles-pp._raw_spin_lock_irqsave
0.01 ±223% +0.1 0.08 ± 11% perf-profile.self.cycles-pp.lapic_next_deadline
0.00 +0.1 0.08 ± 8% perf-profile.self.cycles-pp.llist_reverse_order
0.00 +0.1 0.10 ± 4% perf-profile.self.cycles-pp.call_function_single_prep_ipi
0.89 ± 5% +0.1 0.99 ± 2% perf-profile.self.cycles-pp.anon_vma_interval_tree_insert
1.53 ± 2% +0.1 1.64 ± 3% perf-profile.self.cycles-pp.mnt_get_count
0.38 ± 3% +0.1 0.52 ± 2% perf-profile.self.cycles-pp.intel_idle
0.88 +0.5 1.41 ± 2% perf-profile.self.cycles-pp.intel_idle_xstate
5.63 ± 5% +0.6 6.19 ± 3% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
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
