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OU8DgToTkGmDstjfZ7mXjKxxm0slZeJBoYMQgAtPE/YZTiYtYOMpwXAxoO/eq9R6gcwlUOaNdITHicszBLHAlA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO1PR11MB5089 X-OriginatorOrg: intel.com Hello, kernel test robot noticed a 98.3% improvement of unixbench.throughput on: commit: eb05ec62b852348b1c6b72b8cce4b69bad955aa4 ("mm/vmalloc: fix vmalloc which may return null if called with __GFP_NOFAIL") https://github.com/bytedance/kernel.git 6.6-velinux testcase: unixbench config: x86_64-bytedance-6.6-velinux compiler: gcc-12 test machine: 240 threads 1 sockets Genuine Intel(R) 0000 (Granite Rapids) with 192G memory parameters: runtime: 300s nr_task: 100% test: pipe cpufreq_governor: performance Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20241226/202412260914.7f69359e-lkp@intel.com ========================================================================================= compiler/cpufreq_governor/kconfig/nr_task/rootfs/runtime/tbox_group/test/testcase: gcc-12/performance/x86_64-bytedance-6.6-velinux/100%/debian-12-x86_64-20240206.cgz/300s/lkp-gnr-1ap1/pipe/unixbench commit: 6b8e86573f ("mm: /proc/pid/smaps_rollup: avoid skipping vma after getting mmap_lock again") eb05ec62b8 ("mm/vmalloc: fix vmalloc which may return null if called with __GFP_NOFAIL") 6b8e86573f99d9e3 eb05ec62b852348b1c6b72b8cce ---------------- --------------------------- %stddev %change %stddev \ | \ 1265 ± 6% -33.7% 839.50 ± 24% perf-c2c.HITM.local 5.33 +126.2% 12.06 vmstat.cpu.us 70.59 -6.8 63.82 mpstat.cpu.all.sys% 5.35 +6.7 12.08 mpstat.cpu.all.usr% 201810 -9.3% 182977 ± 6% proc-vmstat.nr_active_anon 1111190 -1.9% 1089622 proc-vmstat.nr_file_pages 215687 -10.0% 194119 ± 5% proc-vmstat.nr_shmem 201810 -9.3% 182977 ± 6% proc-vmstat.nr_zone_active_anon 187938 ± 5% -11.3% 166628 ± 7% proc-vmstat.pgactivate 204925 +98.3% 406454 unixbench.score 2.549e+08 +98.3% 5.056e+08 unixbench.throughput 66958 -9.6% 60562 unixbench.time.system_time 5016 +127.5% 11414 unixbench.time.user_time 1.002e+11 +98.5% 1.989e+11 unixbench.workload 0.13 ±109% +386.8% 0.62 ± 28% perf-sched.sch_delay.avg.ms.__x64_sys_pause.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown] 0.02 ± 36% +60.3% 0.03 ± 21% perf-sched.sch_delay.avg.ms.do_wait.kernel_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.62 ±113% +400.1% 3.10 ± 29% perf-sched.sch_delay.max.ms.__x64_sys_pause.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown] 2.00 ± 52% +50.3% 3.01 ± 32% perf-sched.sch_delay.max.ms.do_wait.kernel_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe 7.69 ± 3% +59.8% 12.29 ± 2% perf-sched.wait_and_delay.avg.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread 77.83 ± 10% +84.6% 143.67 ± 5% perf-sched.wait_and_delay.count.__cond_resched.mutex_lock.pipe_read.vfs_read.ksys_read 81.00 ± 7% +65.6% 134.17 ± 7% perf-sched.wait_and_delay.count.__cond_resched.mutex_lock.pipe_write.vfs_write.ksys_write 102.33 ± 3% +70.7% 174.67 ± 7% perf-sched.wait_and_delay.count.exit_to_user_mode_loop.exit_to_user_mode_prepare.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt 2710 -12.0% 2383 ± 4% perf-sched.wait_and_delay.count.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64 638.67 ± 3% -37.7% 397.83 ± 2% perf-sched.wait_and_delay.count.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread 7.69 ± 3% +59.8% 12.29 ± 2% perf-sched.wait_time.avg.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread 4340025 ± 15% +53.3% 6655143 ± 37% sched_debug.cfs_rq:/.avg_vruntime.min 4340026 ± 15% +53.3% 6655147 ± 37% sched_debug.cfs_rq:/.min_vruntime.min 0.28 ± 38% +100.4% 0.57 ± 32% sched_debug.cfs_rq:/.util_est_enqueued.avg 38.74 ± 27% +93.3% 74.88 ± 40% sched_debug.cfs_rq:/.util_est_enqueued.max 2.96 ± 31% +93.4% 5.72 ± 37% sched_debug.cfs_rq:/.util_est_enqueued.stddev 8523 ± 18% +64.1% 13983 ± 36% sched_debug.cpu.avg_idle.stddev 61588 ± 15% +51.2% 93105 ± 36% sched_debug.cpu.clock.avg 61596 ± 15% +51.2% 93114 ± 36% sched_debug.cpu.clock.max 61578 ± 15% +51.2% 93095 ± 36% sched_debug.cpu.clock.min 61588 ± 15% +51.2% 93105 ± 36% sched_debug.cpu.clock_task.avg 61596 ± 15% +51.2% 93114 ± 36% sched_debug.cpu.clock_task.max 61578 ± 15% +51.2% 93095 ± 36% sched_debug.cpu.clock_task.min 128.65 ± 71% +103.1% 261.33 ± 28% sched_debug.cpu.max_idle_balance_cost.stddev 618.50 ± 15% +50.9% 933.39 ± 36% sched_debug.cpu.next_balance.avg 618.50 ± 15% +50.9% 933.39 ± 36% sched_debug.cpu.next_balance.min 3.53 ± 63% +188.3% 10.17 ± 53% sched_debug.cpu.nr_uninterruptible.max 0.58 ± 32% +79.6% 1.04 ± 40% sched_debug.cpu.nr_uninterruptible.stddev 61578 ± 15% +51.2% 93095 ± 36% sched_debug.cpu_clk 6.185e+08 ± 15% +50.9% 9.334e+08 ± 36% sched_debug.jiffies 61451 ± 15% +51.2% 92904 ± 36% sched_debug.ktime 8.08e+10 +98.2% 1.602e+11 perf-stat.i.branch-instructions 3156472 +22.0% 3850060 perf-stat.i.branch-misses 1.10 ± 2% +0.5 1.62 perf-stat.i.cache-miss-rate% 582573 -7.2% 540372 ± 2% perf-stat.i.cache-misses 94991558 -69.5% 28949792 perf-stat.i.cache-references 1.63 ± 2% -42.6% 0.93 ± 6% perf-stat.i.cpi 6.192e+11 -5.8% 5.832e+11 perf-stat.i.cpu-cycles 20098258 ± 6% +25.8% 25287969 ± 3% perf-stat.i.cycles-between-cache-misses 3.993e+11 +98.3% 7.917e+11 perf-stat.i.instructions 0.69 +85.6% 1.28 perf-stat.i.ipc 0.00 ± 2% -53.4% 0.00 perf-stat.overall.MPKI 0.00 -0.0 0.00 perf-stat.overall.branch-miss-rate% 0.62 +1.3 1.88 ± 2% perf-stat.overall.cache-miss-rate% 1.55 -52.5% 0.74 perf-stat.overall.cpi 0.64 +110.5% 1.36 perf-stat.overall.ipc 8.07e+10 +98.1% 1.598e+11 perf-stat.ps.branch-instructions 3135723 +22.0% 3826065 perf-stat.ps.branch-misses 589456 -7.7% 543885 perf-stat.ps.cache-misses 95119360 -69.5% 28976430 perf-stat.ps.cache-references 6.184e+11 -5.9% 5.82e+11 perf-stat.ps.cpu-cycles 3.988e+11 +98.1% 7.9e+11 perf-stat.ps.instructions 1.576e+14 +98.1% 3.123e+14 perf-stat.total.instructions 57.64 -47.5 10.14 ± 2% perf-profile.calltrace.cycles-pp.atime_needs_update.touch_atime.pipe_read.vfs_read.ksys_read 57.90 -47.1 10.76 ± 2% perf-profile.calltrace.cycles-pp.touch_atime.pipe_read.vfs_read.ksys_read.do_syscall_64 65.42 -38.7 26.70 perf-profile.calltrace.cycles-pp.pipe_read.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 67.96 -36.0 31.98 perf-profile.calltrace.cycles-pp.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 69.32 -34.5 34.79 perf-profile.calltrace.cycles-pp.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 71.59 -32.5 39.04 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 72.37 -31.7 40.64 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.read 77.32 -24.4 52.97 perf-profile.calltrace.cycles-pp.read 0.85 +0.5 1.34 perf-profile.calltrace.cycles-pp.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 0.00 +0.5 0.54 perf-profile.calltrace.cycles-pp.security_file_permission.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.5 0.54 perf-profile.calltrace.cycles-pp.security_file_permission.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.6 0.55 perf-profile.calltrace.cycles-pp.rw_verify_area.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.6 0.56 perf-profile.calltrace.cycles-pp.fsnotify_perm.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.6 0.58 perf-profile.calltrace.cycles-pp._raw_spin_unlock_irqrestore.__wake_up_common_lock.pipe_write.vfs_write.ksys_write 0.82 +0.6 1.40 perf-profile.calltrace.cycles-pp.current_time.atime_needs_update.touch_atime.pipe_read.vfs_read 0.00 +0.6 0.62 perf-profile.calltrace.cycles-pp.__raw_spin_unlock_irq.pipe_read.vfs_read.ksys_read.do_syscall_64 0.00 +0.6 0.62 perf-profile.calltrace.cycles-pp.__get_task_ioprio.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.6 0.64 perf-profile.calltrace.cycles-pp.__get_task_ioprio.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.42 ± 44% +0.6 1.06 perf-profile.calltrace.cycles-pp.x64_sys_call.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 0.00 +0.6 0.64 perf-profile.calltrace.cycles-pp.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 0.64 +0.7 1.31 perf-profile.calltrace.cycles-pp.__fdget_pos.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 0.63 +0.7 1.31 perf-profile.calltrace.cycles-pp.__fdget_pos.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 0.70 +0.8 1.46 perf-profile.calltrace.cycles-pp.mutex_unlock.pipe_read.vfs_read.ksys_read.do_syscall_64 0.00 +0.8 0.76 perf-profile.calltrace.cycles-pp.syscall_enter_from_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 0.00 +0.8 0.76 perf-profile.calltrace.cycles-pp.__wake_up_common.__wake_up_common_lock.pipe_write.vfs_write.ksys_write 0.00 +0.8 0.77 perf-profile.calltrace.cycles-pp.syscall_enter_from_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 0.78 +0.8 1.57 perf-profile.calltrace.cycles-pp.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 0.00 +0.8 0.81 perf-profile.calltrace.cycles-pp.main 0.78 +0.9 1.64 perf-profile.calltrace.cycles-pp.mutex_unlock.pipe_write.vfs_write.ksys_write.do_syscall_64 0.00 +0.9 0.87 perf-profile.calltrace.cycles-pp.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 0.00 +0.9 0.88 perf-profile.calltrace.cycles-pp.__fget_light.__fdget_pos.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.9 0.88 perf-profile.calltrace.cycles-pp._raw_spin_lock_irq.pipe_write.vfs_write.ksys_write.do_syscall_64 0.00 +0.9 0.89 perf-profile.calltrace.cycles-pp.__fget_light.__fdget_pos.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.9 0.89 perf-profile.calltrace.cycles-pp.timestamp_truncate.inode_needs_update_time.file_update_time.pipe_write.vfs_write 0.00 +0.9 0.95 perf-profile.calltrace.cycles-pp.x64_sys_call.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 0.80 +1.0 1.75 perf-profile.calltrace.cycles-pp._raw_spin_lock_irq.pipe_read.vfs_read.ksys_read.do_syscall_64 0.86 +1.0 1.83 perf-profile.calltrace.cycles-pp.mutex_lock.pipe_read.vfs_read.ksys_read.do_syscall_64 0.93 +1.0 1.95 perf-profile.calltrace.cycles-pp.mutex_lock.pipe_write.vfs_write.ksys_write.do_syscall_64 1.02 +1.1 2.14 perf-profile.calltrace.cycles-pp.__raw_spin_lock_irqsave.__wake_up_common_lock.pipe_write.vfs_write.ksys_write 1.15 +1.2 2.38 perf-profile.calltrace.cycles-pp.inode_needs_update_time.file_update_time.pipe_write.vfs_write.ksys_write 1.48 +1.5 3.01 perf-profile.calltrace.cycles-pp.file_update_time.pipe_write.vfs_write.ksys_write.do_syscall_64 2.18 +2.4 4.56 perf-profile.calltrace.cycles-pp.__wake_up_common_lock.pipe_write.vfs_write.ksys_write.do_syscall_64 2.38 +2.4 4.82 perf-profile.calltrace.cycles-pp.copyout._copy_to_iter.copy_page_to_iter.pipe_read.vfs_read 2.54 +2.7 5.28 perf-profile.calltrace.cycles-pp.copyin._copy_from_iter.copy_page_from_iter.pipe_write.vfs_write 2.88 +3.0 5.86 perf-profile.calltrace.cycles-pp._copy_to_iter.copy_page_to_iter.pipe_read.vfs_read.ksys_read 3.27 +3.4 6.67 perf-profile.calltrace.cycles-pp.copy_page_to_iter.pipe_read.vfs_read.ksys_read.do_syscall_64 3.45 +3.7 7.16 perf-profile.calltrace.cycles-pp._copy_from_iter.copy_page_from_iter.pipe_write.vfs_write.ksys_write 4.04 +4.4 8.41 perf-profile.calltrace.cycles-pp.copy_page_from_iter.pipe_write.vfs_write.ksys_write.do_syscall_64 4.84 +5.8 10.62 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.write 4.42 +6.0 10.43 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.read 11.91 +13.0 24.94 perf-profile.calltrace.cycles-pp.pipe_write.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 14.14 +15.5 29.66 perf-profile.calltrace.cycles-pp.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 15.48 +16.9 32.42 perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 17.65 +19.1 36.79 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 18.42 +20.0 38.39 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.write 23.77 +26.4 50.16 perf-profile.calltrace.cycles-pp.write 57.82 -47.3 10.54 ± 2% perf-profile.children.cycles-pp.atime_needs_update 57.98 -47.0 10.94 ± 2% perf-profile.children.cycles-pp.touch_atime 65.83 -38.2 27.66 perf-profile.children.cycles-pp.pipe_read 68.18 -35.8 32.43 perf-profile.children.cycles-pp.vfs_read 69.48 -34.4 35.10 perf-profile.children.cycles-pp.ksys_read 78.56 -23.3 55.24 perf-profile.children.cycles-pp.read 89.82 -12.9 76.89 perf-profile.children.cycles-pp.do_syscall_64 91.01 -11.7 79.34 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 0.09 +0.0 0.10 perf-profile.children.cycles-pp.scheduler_tick 0.10 ± 4% +0.0 0.12 ± 4% perf-profile.children.cycles-pp.update_process_times 0.10 ± 4% +0.0 0.12 ± 4% perf-profile.children.cycles-pp.tick_sched_handle 0.26 +0.0 0.29 perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt 0.26 ± 2% +0.0 0.29 ± 2% perf-profile.children.cycles-pp.hrtimer_interrupt 0.27 +0.0 0.30 perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt 0.30 ± 2% +0.0 0.33 perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt 0.11 +0.1 0.22 ± 2% perf-profile.children.cycles-pp._raw_spin_lock_irqsave 0.08 +0.1 0.21 perf-profile.children.cycles-pp.write@plt 0.16 ± 2% +0.2 0.32 perf-profile.children.cycles-pp.__x64_sys_write 0.14 ± 2% +0.2 0.31 perf-profile.children.cycles-pp.__x64_sys_read 0.22 +0.2 0.41 perf-profile.children.cycles-pp.make_vfsuid 0.19 +0.2 0.38 perf-profile.children.cycles-pp.make_vfsgid 0.22 ± 2% +0.2 0.43 perf-profile.children.cycles-pp.amd_clear_divider 0.20 ± 2% +0.2 0.40 perf-profile.children.cycles-pp.__wake_up_sync_key 0.15 +0.2 0.36 ± 2% perf-profile.children.cycles-pp.read@plt 0.30 +0.3 0.64 perf-profile.children.cycles-pp.fsnotify_perm 0.23 +0.3 0.58 perf-profile.children.cycles-pp.anon_pipe_buf_release 0.32 +0.3 0.66 perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore 0.52 +0.4 0.90 perf-profile.children.cycles-pp.fpregs_assert_state_consistent 0.45 +0.4 0.84 perf-profile.children.cycles-pp.syscall_exit_to_user_mode_prepare 0.35 +0.4 0.76 perf-profile.children.cycles-pp.rcu_all_qs 0.33 ± 2% +0.4 0.75 perf-profile.children.cycles-pp.kill_fasync 0.41 +0.4 0.83 ± 2% perf-profile.children.cycles-pp.entry_SYSCALL_64_safe_stack 0.39 +0.4 0.83 perf-profile.children.cycles-pp.__wake_up_common 0.56 ± 3% +0.5 1.02 perf-profile.children.cycles-pp.ktime_get_coarse_real_ts64 0.49 +0.5 1.00 perf-profile.children.cycles-pp.timestamp_truncate 0.47 +0.6 1.05 perf-profile.children.cycles-pp.syscall_return_via_sysret 0.44 +0.6 1.03 perf-profile.children.cycles-pp.__raw_spin_unlock_irq 0.58 +0.6 1.19 perf-profile.children.cycles-pp.rw_verify_area 0.64 +0.6 1.28 perf-profile.children.cycles-pp.security_file_permission 0.91 +0.7 1.58 perf-profile.children.cycles-pp.current_time 0.68 ± 4% +0.7 1.40 ± 2% perf-profile.children.cycles-pp.main 0.67 +0.7 1.42 perf-profile.children.cycles-pp.__get_task_ioprio 1.04 +0.8 1.81 perf-profile.children.cycles-pp.exit_to_user_mode_prepare 0.68 +0.8 1.46 perf-profile.children.cycles-pp.__cond_resched 0.83 +0.9 1.74 perf-profile.children.cycles-pp.syscall_enter_from_user_mode 0.96 +1.0 2.00 perf-profile.children.cycles-pp.__fget_light 1.10 +1.1 2.23 perf-profile.children.cycles-pp.x64_sys_call 1.05 +1.2 2.22 perf-profile.children.cycles-pp.__raw_spin_lock_irqsave 1.34 +1.4 2.78 perf-profile.children.cycles-pp.inode_needs_update_time 1.29 +1.5 2.74 perf-profile.children.cycles-pp._raw_spin_lock_irq 1.48 +1.6 3.07 perf-profile.children.cycles-pp.__fdget_pos 2.04 +1.6 3.68 perf-profile.children.cycles-pp.syscall_exit_to_user_mode 1.54 +1.7 3.24 perf-profile.children.cycles-pp.mutex_unlock 1.61 +1.7 3.31 perf-profile.children.cycles-pp.file_update_time 1.90 +2.1 4.01 perf-profile.children.cycles-pp.mutex_lock 2.53 +2.6 5.13 perf-profile.children.cycles-pp.copyout 2.41 +2.6 5.03 perf-profile.children.cycles-pp.__wake_up_common_lock 2.74 +2.9 5.64 perf-profile.children.cycles-pp.copyin 1.96 +2.9 4.87 perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack 2.98 +3.1 6.06 perf-profile.children.cycles-pp._copy_to_iter 3.39 +3.5 6.90 perf-profile.children.cycles-pp.copy_page_to_iter 3.56 +3.8 7.39 perf-profile.children.cycles-pp._copy_from_iter 4.16 +4.5 8.66 perf-profile.children.cycles-pp.copy_page_from_iter 5.30 +6.6 11.93 perf-profile.children.cycles-pp.entry_SYSCALL_64 12.38 +13.5 25.92 perf-profile.children.cycles-pp.pipe_write 14.48 +15.8 30.27 perf-profile.children.cycles-pp.vfs_write 15.70 +17.1 32.78 perf-profile.children.cycles-pp.ksys_write 24.82 +27.9 52.71 perf-profile.children.cycles-pp.write 56.41 -48.1 8.34 ± 3% perf-profile.self.cycles-pp.atime_needs_update 0.07 +0.1 0.14 ± 3% perf-profile.self.cycles-pp._raw_spin_lock_irqsave 0.00 +0.1 0.09 perf-profile.self.cycles-pp.write@plt 0.00 +0.1 0.10 perf-profile.self.cycles-pp.read@plt 0.10 ± 4% +0.1 0.21 ± 2% perf-profile.self.cycles-pp.__x64_sys_write 0.09 +0.1 0.21 perf-profile.self.cycles-pp.__x64_sys_read 0.15 ± 2% +0.1 0.27 perf-profile.self.cycles-pp.make_vfsgid 0.13 +0.1 0.25 perf-profile.self.cycles-pp.__wake_up_sync_key 0.18 ± 2% +0.1 0.31 perf-profile.self.cycles-pp.make_vfsuid 0.15 ± 3% +0.1 0.28 perf-profile.self.cycles-pp.amd_clear_divider 0.27 +0.2 0.50 perf-profile.self.cycles-pp.syscall_exit_to_user_mode_prepare 0.17 ± 2% +0.2 0.41 perf-profile.self.cycles-pp.kill_fasync 0.21 ± 2% +0.2 0.45 perf-profile.self.cycles-pp.rcu_all_qs 0.16 ± 3% +0.2 0.41 perf-profile.self.cycles-pp.touch_atime 0.24 +0.3 0.49 perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore 0.26 +0.3 0.54 perf-profile.self.cycles-pp.fsnotify_perm 0.19 +0.3 0.49 perf-profile.self.cycles-pp.anon_pipe_buf_release 0.43 +0.3 0.75 perf-profile.self.cycles-pp.fpregs_assert_state_consistent 0.28 +0.3 0.60 perf-profile.self.cycles-pp.file_update_time 0.48 ± 3% +0.4 0.84 ± 2% perf-profile.self.cycles-pp.ktime_get_coarse_real_ts64 0.32 +0.4 0.69 perf-profile.self.cycles-pp.__wake_up_common 0.50 +0.4 0.89 perf-profile.self.cycles-pp.exit_to_user_mode_prepare 0.39 +0.4 0.80 perf-profile.self.cycles-pp.timestamp_truncate 0.32 +0.4 0.74 perf-profile.self.cycles-pp.__raw_spin_unlock_irq 0.41 +0.4 0.83 ± 2% perf-profile.self.cycles-pp.entry_SYSCALL_64_safe_stack 0.43 +0.4 0.87 perf-profile.self.cycles-pp.rw_verify_area 0.40 +0.5 0.85 perf-profile.self.cycles-pp.__cond_resched 0.43 +0.5 0.89 perf-profile.self.cycles-pp.copy_page_to_iter 0.44 +0.5 0.92 perf-profile.self.cycles-pp._copy_to_iter 0.59 +0.5 1.08 perf-profile.self.cycles-pp.syscall_exit_to_user_mode 0.61 +0.5 1.10 perf-profile.self.cycles-pp.current_time 0.53 +0.5 1.07 perf-profile.self.cycles-pp.security_file_permission 0.52 +0.6 1.08 perf-profile.self.cycles-pp.ksys_write 0.53 +0.6 1.08 perf-profile.self.cycles-pp.__fdget_pos 0.47 +0.6 1.05 perf-profile.self.cycles-pp.syscall_return_via_sysret 0.40 +0.6 0.98 ± 2% perf-profile.self.cycles-pp.main 0.61 +0.6 1.24 perf-profile.self.cycles-pp.ksys_read 0.60 +0.7 1.26 perf-profile.self.cycles-pp.__get_task_ioprio 0.64 +0.7 1.34 perf-profile.self.cycles-pp.inode_needs_update_time 0.64 +0.7 1.35 perf-profile.self.cycles-pp.copy_page_from_iter 0.71 +0.7 1.44 perf-profile.self.cycles-pp.__wake_up_common_lock 0.72 +0.8 1.50 perf-profile.self.cycles-pp.syscall_enter_from_user_mode 0.85 +0.9 1.72 perf-profile.self.cycles-pp.do_syscall_64 0.81 +0.9 1.70 perf-profile.self.cycles-pp._copy_from_iter 0.85 +0.9 1.76 perf-profile.self.cycles-pp.__fget_light 0.88 +0.9 1.80 perf-profile.self.cycles-pp.x64_sys_call 0.98 +1.1 2.08 perf-profile.self.cycles-pp.__raw_spin_lock_irqsave 1.18 +1.3 2.46 perf-profile.self.cycles-pp.mutex_lock 1.24 +1.3 2.59 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe 1.33 +1.3 2.68 perf-profile.self.cycles-pp.vfs_read 1.23 +1.4 2.59 perf-profile.self.cycles-pp._raw_spin_lock_irq 1.30 +1.4 2.73 perf-profile.self.cycles-pp.vfs_write 1.34 +1.5 2.81 perf-profile.self.cycles-pp.entry_SYSCALL_64 1.45 +1.6 3.03 perf-profile.self.cycles-pp.mutex_unlock 1.59 +2.0 3.57 perf-profile.self.cycles-pp.pipe_read 1.84 +2.2 4.00 perf-profile.self.cycles-pp.pipe_write 2.46 +2.5 4.99 perf-profile.self.cycles-pp.copyout 2.23 +2.8 5.02 perf-profile.self.cycles-pp.read 1.91 +2.8 4.74 perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack 2.02 +2.8 4.87 perf-profile.self.cycles-pp.write 2.69 +2.9 5.54 perf-profile.self.cycles-pp.copyin 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