From: kernel test robot <oliver.sang@intel.com>
To: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: <oe-lkp@lists.linux.dev>, <lkp@intel.com>,
<linux-block@vger.kernel.org>, <linux-fsdevel@vger.kernel.org>,
<oliver.sang@intel.com>
Subject: [linux-next:master] [loop] d908729e74: stress-ng.umount.ops_per_sec 100.0% regression
Date: Wed, 15 Jul 2026 21:55:01 +0800 [thread overview]
Message-ID: <202607151655.9d74999d-lkp@intel.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 78045 bytes --]
hi, Tetsuo Handa,
this report is just FYI.
we understand d908729e74 is an experimental patch, and it seems there are lots
of print while running stress-ng.umount tests (one dmesg is attached)
[ 59.370110][T10457] do_umount: task=stress-ng-umoun[10457] propagate_mount_busy()!=0
[ 59.394831][T10476] do_umount: task=stress-ng-umoun[10476] propagate_mount_busy()!=0
[ 59.404989][T10477] do_umount: task=stress-ng-umoun[10477] propagate_mount_busy()!=0
[ 59.414578][T10473] do_umount: task=stress-ng-umoun[10473] propagate_mount_busy()!=0
[ 59.423911][T10460] do_umount: task=stress-ng-umoun[10460] propagate_mount_busy()!=0
....
so the very slow performance is expected?
just FYI what we observed in our tests.
Hello,
kernel test robot noticed a 100.0% regression of stress-ng.umount.ops_per_sec on:
commit: d908729e7467462bce1db3bc1bffec2e2d1f6c81 ("loop: Fix NULL pointer dereference in lo_rw_aio()")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
[still regression on linux-next/master bee763d5f341b99cf472afeb508d4988f62a6ca1]
testcase: stress-ng
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 224 threads 2 sockets Intel(R) Xeon(R) Platinum 8480CTDX (Sapphire Rapids) with 512G memory
parameters:
nr_threads: 100%
testtime: 60s
test: umount
cpufreq_governor: performance
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/202607151655.9d74999d-lkp@intel.com
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260715/202607151655.9d74999d-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-spr-2sp4/umount/stress-ng/60s
commit:
c84e50ccc1 ("net: add "struct dst_entry" debugging")
d908729e74 ("loop: Fix NULL pointer dereference in lo_rw_aio()")
c84e50ccc177911c d908729e7467462bce1db3bc1bf
---------------- ---------------------------
%stddev %change %stddev
\ | \
60.09 +312.8% 248.06 ± 5% stress-ng.time.elapsed_time
60.09 +312.8% 248.06 ± 5% stress-ng.time.elapsed_time.max
52760 ± 2% -81.8% 9620 ± 7% stress-ng.time.involuntary_context_switches
149488 ± 2% +61.8% 241879 stress-ng.time.minor_page_faults
2821 -53.9% 1300 ± 4% stress-ng.time.percent_of_cpu_this_job_got
1677 +92.6% 3230 ± 8% stress-ng.time.system_time
17.97 -97.9% 0.37 ± 11% stress-ng.time.user_time
77874729 -99.8% 190900 ± 11% stress-ng.time.voluntary_context_switches
804634 -99.9% 470.83 ± 10% stress-ng.umount.ops
13417 -100.0% 2.76 ± 11% stress-ng.umount.ops_per_sec
1.203e+10 ± 4% +327.1% 5.137e+10 ± 4% cpuidle..time
94349745 -95.2% 4565944 ± 2% cpuidle..usage
1703024 ± 34% -76.9% 392929 ± 20% numa-numastat.node0.local_node
1773100 ± 31% -73.7% 466314 ± 18% numa-numastat.node0.numa_hit
123.98 +151.7% 312.11 ± 3% uptime.boot
25137 +155.4% 64209 ± 2% uptime.idle
6352999 ± 29% -74.7% 1607659 ±106% numa-meminfo.node0.FilePages
704881 ± 39% -94.1% 41446 ± 99% numa-meminfo.node0.Mapped
8518453 ± 23% -61.7% 3261125 ± 55% numa-meminfo.node0.MemUsed
1588258 ± 29% -74.7% 401984 ±106% numa-vmstat.node0.nr_file_pages
176266 ± 39% -94.1% 10389 ± 99% numa-vmstat.node0.nr_mapped
1773189 ± 31% -73.7% 466366 ± 18% numa-vmstat.node0.numa_hit
1703113 ± 34% -76.9% 392981 ± 20% numa-vmstat.node0.numa_local
185.00 ± 5% -95.4% 8.50 ± 27% perf-c2c.DRAM.local
5701 ± 2% -98.1% 107.83 ± 21% perf-c2c.DRAM.remote
7783 ± 2% -98.6% 112.50 ± 11% perf-c2c.HITM.local
3903 ± 2% -98.2% 71.50 ± 23% perf-c2c.HITM.remote
11686 ± 2% -98.4% 184.00 ± 7% perf-c2c.HITM.total
86.78 +5.7% 91.72 vmstat.cpu.id
8536351 ± 3% -48.1% 4429833 vmstat.memory.cache
33.29 ± 13% -39.3% 20.20 ± 2% vmstat.procs.r
2684019 ± 3% -99.8% 6591 ± 3% vmstat.system.cs
1442389 ± 3% -97.2% 41079 ± 2% vmstat.system.in
86.39 +5.2 91.64 mpstat.cpu.all.idle%
0.72 ± 3% -0.7 0.04 ± 5% mpstat.cpu.all.irq%
0.23 ± 4% -0.2 0.02 ± 3% mpstat.cpu.all.soft%
11.97 ± 3% -3.7 8.25 ± 2% mpstat.cpu.all.sys%
0.70 ± 3% -0.6 0.06 ± 6% mpstat.cpu.all.usr%
12.17 ± 20% -83.6% 2.00 mpstat.max_utilization.seconds
49.16 ± 2% +33.8% 65.80 ± 9% mpstat.max_utilization_pct
2823884 ± 3% -99.8% 6491 ± 2% perf-stat.i.context-switches
84670 ± 4% -99.6% 307.43 ± 2% perf-stat.i.cpu-migrations
0.22 ±129% +706.3% 1.80 ± 10% perf-stat.i.major-faults
9097 ± 4% -60.6% 3586 ± 4% perf-stat.i.minor-faults
9097 ± 4% -60.6% 3587 ± 4% perf-stat.i.page-faults
2775019 ± 3% -99.8% 6370 ± 2% perf-stat.ps.context-switches
220452 +1.2% 223093 perf-stat.ps.cpu-clock
83771 ± 4% -99.7% 289.14 ± 2% perf-stat.ps.cpu-migrations
0.22 ±129% +641.0% 1.63 ± 9% perf-stat.ps.major-faults
8892 ± 4% -65.0% 3116 ± 3% perf-stat.ps.minor-faults
8892 ± 4% -64.9% 3118 ± 3% perf-stat.ps.page-faults
220452 +1.2% 223093 perf-stat.ps.task-clock
4979826 ± 5% -82.7% 859490 meminfo.Active
4979826 ± 5% -82.7% 859490 meminfo.Active(anon)
67874 ± 3% +218.5% 216208 ± 4% meminfo.AnonHugePages
773451 -8.5% 707773 meminfo.AnonPages
8352548 ± 3% -48.8% 4276142 meminfo.Cached
11362980 ± 2% -56.4% 4957049 meminfo.Committed_AS
161454 -6.7% 150606 meminfo.KReclaimable
54472 -9.1% 49515 meminfo.KernelStack
869412 ± 6% -87.2% 111056 meminfo.Mapped
12558346 ± 2% -39.8% 7562575 meminfo.Memused
96084 ± 4% -36.3% 61182 meminfo.PageTables
123466 -5.4% 116846 meminfo.Percpu
161454 -6.7% 150606 meminfo.SReclaimable
4211290 ± 6% -96.3% 155777 ± 6% meminfo.Shmem
12813481 ± 2% -30.9% 8854911 meminfo.max_used_kB
493.83 ± 3% -34.1% 325.67 ± 2% turbostat.Avg_MHz
17.34 ± 3% -8.6 8.76 ± 2% turbostat.Busy%
2847 +30.5% 3716 turbostat.Bzy_MHz
0.73 ± 3% -0.7 0.00 turbostat.C1%
63.69 ± 3% -61.1 2.60 ± 3% turbostat.C1E%
19.01 ± 15% +69.6 88.65 turbostat.C6%
66.25 ± 3% -78.0% 14.56 turbostat.CPU%c1
4.74 ± 69% +1352.9% 68.84 turbostat.CPU%c6
57.83 -12.1% 50.83 ± 2% turbostat.CoreTmp
0.40 -54.4% 0.18 ± 2% turbostat.IPC
94123962 -89.4% 9950194 ± 4% turbostat.IRQ
1479952 -46.5% 792469 ± 2% turbostat.NMI
0.50 ± 4% -0.5 0.00 turbostat.POLL%
1.34 ± 92% -88.7% 0.15 ± 70% turbostat.Pkg%pc2
58.33 -12.0% 51.33 turbostat.PkgTmp
444.18 -6.5% 415.23 turbostat.PkgWatt
24.82 -3.2% 24.01 turbostat.RAMWatt
2500 -39.3% 1516 ± 2% turbostat.UncMHz
1245044 ± 5% -82.7% 215013 proc-vmstat.nr_active_anon
193369 -8.5% 176889 proc-vmstat.nr_anon_pages
33.14 ± 3% +221.0% 106.39 ± 4% proc-vmstat.nr_anon_transparent_hugepages
12797945 +1.0% 12922865 proc-vmstat.nr_dirty_background_threshold
25627182 +1.0% 25877327 proc-vmstat.nr_dirty_threshold
2088218 ± 3% -48.8% 1069227 proc-vmstat.nr_file_pages
54471 -9.2% 49470 proc-vmstat.nr_kernel_stack
217415 ± 6% -87.3% 27713 ± 2% proc-vmstat.nr_mapped
24021 ± 4% -36.6% 15219 ± 2% proc-vmstat.nr_page_table_pages
1052903 ± 6% -96.3% 39135 ± 6% proc-vmstat.nr_shmem
40363 -6.7% 37664 proc-vmstat.nr_slab_reclaimable
117592 -1.9% 115335 proc-vmstat.nr_slab_unreclaimable
76848 -1.4% 75760 proc-vmstat.nr_vmalloc
1245044 ± 5% -82.7% 215013 proc-vmstat.nr_zone_active_anon
64270 ± 35% -69.1% 19860 ± 76% proc-vmstat.numa_hint_faults
43950 ± 48% -73.5% 11651 ± 54% proc-vmstat.numa_hint_faults_local
2412834 ± 3% -56.1% 1059866 proc-vmstat.numa_hit
2176941 ± 4% -62.0% 826445 proc-vmstat.numa_local
129575 ± 26% -71.0% 37602 ± 94% proc-vmstat.numa_pte_updates
2488714 ± 3% -51.6% 1204079 proc-vmstat.pgalloc_normal
750242 ± 3% +20.9% 906839 ± 2% proc-vmstat.pgfault
664570 ± 2% +68.4% 1118975 proc-vmstat.pgfree
36925 ± 5% +16.8% 43128 ± 6% proc-vmstat.pgreuse
825.17 +1301.6% 11565 ± 5% proc-vmstat.unevictable_pgs_culled
7006 ± 2% +325.6% 29822 ± 7% sched_debug.cfs_rq:/.avg_vruntime.avg
40462 ± 10% +737.4% 338834 ± 21% sched_debug.cfs_rq:/.avg_vruntime.max
3981 ± 3% +28.2% 5102 ± 10% sched_debug.cfs_rq:/.avg_vruntime.min
5154 ± 7% +782.7% 45498 ± 10% sched_debug.cfs_rq:/.avg_vruntime.stddev
710829 ± 34% +49.1% 1059534 ± 11% sched_debug.cfs_rq:/.load.max
150111 ± 10% +37.8% 206893 ± 6% sched_debug.cfs_rq:/.load.stddev
2208 ± 27% -64.7% 779.66 ± 41% sched_debug.cfs_rq:/.load_avg.avg
40413 ± 8% -57.6% 17125 ± 10% sched_debug.cfs_rq:/.load_avg.max
5.08 ± 26% -100.0% 0.00 sched_debug.cfs_rq:/.load_avg.min
7737 ± 16% -63.3% 2839 ± 22% sched_debug.cfs_rq:/.load_avg.stddev
76.72 ±118% -94.9% 3.87 ± 36% sched_debug.cfs_rq:/.removed.load_avg.avg
15144 ±136% -98.5% 221.87 ± 10% sched_debug.cfs_rq:/.removed.load_avg.max
1038 ±130% -97.3% 28.42 ± 17% sched_debug.cfs_rq:/.removed.load_avg.stddev
249.83 ± 17% -55.0% 112.31 ± 10% sched_debug.cfs_rq:/.removed.runnable_avg.max
249.75 ± 17% -55.0% 112.31 ± 10% sched_debug.cfs_rq:/.removed.util_avg.max
1081 ± 6% +14.2% 1234 ± 7% sched_debug.cfs_rq:/.runnable_avg.max
5.00 ± 25% -100.0% 0.00 sched_debug.cfs_rq:/.runnable_avg.min
162.44 ± 4% +46.5% 238.00 ± 5% sched_debug.cfs_rq:/.runnable_avg.stddev
108.77 ± 2% -10.9% 96.96 ± 7% sched_debug.cfs_rq:/.util_avg.avg
4.92 ± 25% -100.0% 0.00 sched_debug.cfs_rq:/.util_avg.min
162.14 ± 4% +41.0% 228.54 ± 4% sched_debug.cfs_rq:/.util_avg.stddev
10.43 ± 21% +218.8% 33.23 ± 27% sched_debug.cfs_rq:/.util_est.avg
80.66 ± 7% +87.0% 150.81 ± 10% sched_debug.cfs_rq:/.util_est.stddev
7006 ± 2% +325.6% 29822 ± 7% sched_debug.cfs_rq:/.zero_vruntime.avg
40462 ± 10% +737.4% 338834 ± 21% sched_debug.cfs_rq:/.zero_vruntime.max
3981 ± 3% +28.2% 5102 ± 10% sched_debug.cfs_rq:/.zero_vruntime.min
5154 ± 7% +782.7% 45498 ± 10% sched_debug.cfs_rq:/.zero_vruntime.stddev
624650 ± 2% +53.9% 961556 sched_debug.cpu.avg_idle.avg
22687 ± 24% +662.8% 173061 ± 8% sched_debug.cpu.avg_idle.min
251512 ± 3% -54.5% 114548 ± 8% sched_debug.cpu.avg_idle.stddev
91182 ± 2% +89.7% 172996 ± 7% sched_debug.cpu.clock.avg
91204 ± 2% +89.7% 173016 ± 7% sched_debug.cpu.clock.max
91159 ± 2% +89.7% 172961 ± 7% sched_debug.cpu.clock.min
90721 ± 2% +90.4% 172755 ± 7% sched_debug.cpu.clock_task.avg
90895 ± 2% +90.3% 172941 ± 7% sched_debug.cpu.clock_task.max
76103 ± 2% +104.2% 155431 ± 7% sched_debug.cpu.clock_task.min
989.42 +18.4% 1171 ± 2% sched_debug.cpu.clock_task.stddev
10278 +18.0% 12129 ± 2% sched_debug.cpu.curr->pid.max
1.17 ± 20% +45.7% 1.70 ± 14% sched_debug.cpu.nr_running.max
385890 -98.9% 4198 ± 10% sched_debug.cpu.nr_switches.avg
443274 -89.4% 47022 ± 29% sched_debug.cpu.nr_switches.max
235117 ± 13% -99.5% 1244 ± 6% sched_debug.cpu.nr_switches.min
26366 ± 9% -79.6% 5375 ± 19% sched_debug.cpu.nr_switches.stddev
117.33 ± 11% -26.5% 86.22 ± 24% sched_debug.cpu.nr_uninterruptible.max
-112.67 -85.1% -16.74 sched_debug.cpu.nr_uninterruptible.min
39.13 ± 2% -77.0% 8.99 ± 17% sched_debug.cpu.nr_uninterruptible.stddev
91161 ± 2% +89.7% 172977 ± 7% sched_debug.cpu_clk
0.01 ±149% +393.8% 0.03 ± 62% sched_debug.dl_rq:.dl_nr_running.avg
0.03 ±117% +248.3% 0.12 ± 34% sched_debug.dl_rq:.dl_nr_running.stddev
90093 ± 2% +90.8% 171916 ± 7% sched_debug.ktime
93416 ± 2% +87.6% 175231 ± 7% sched_debug.sched_clk
0.02 ± 54% +4401.9% 0.79 ±106% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.anon_pipe_read.fifo_pipe_read.vfs_read.ksys_read
0.01 ± 9% +4e+05% 30.47 ±141% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.anon_pipe_read.vfs_read.ksys_read.do_syscall_64
0.11 ± 7% +254.0% 0.38 ± 66% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.devkmsg_read.vfs_read.ksys_read.do_syscall_64
0.01 ± 16% +1511.8% 0.09 ± 81% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.do_nanosleep.hrtimer_nanosleep.common_nsleep.__x64_sys_clock_nanosleep
0.03 ± 23% -98.7% 0.00 ±223% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsconfig
0.09 ±164% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsopen
0.02 ± 48% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.move_mount
0.30 ±203% +56061.3% 165.77 ±150% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.sched_setaffinity
0.02 ± 26% -97.4% 0.00 ±223% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.exp_funnel_lock.synchronize_rcu_expedited.namespace_unlock.do_umount
0.98 ± 39% -97.8% 0.02 ± 39% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown]
0.02 ± 79% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.clock_nanosleep.[unknown]
0.02 ± 59% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.shim_nanosleep_uint64.[unknown]
0.02 ± 13% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_mwc1
0.01 ± 23% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_umount_mounter.[unknown]
0.03 ± 82% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_umount_umount
0.02 ± 35% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_umount_umounter
0.04 ±112% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.umount
0.04 ± 85% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.umount2
0.03 ±104% -97.1% 0.00 ±223% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_call_function_single.[unknown]
0.00 ± 30% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_call_function_single.umount2
0.01 ± 43% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.__pi_memset
0.05 ±109% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irqrestore
0.00 ±101% +11082.1% 0.52 ± 94% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.path_init
0.04 ±114% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.pcpu_alloc_noprof
0.01 ±107% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.__mutex_lock.constprop.0
0.44 ± 14% -82.3% 0.08 ± 96% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.__sync_rcu_exp_select_node_cpus.kthread_worker_fn.kthread
0.15 ± 69% -99.6% 0.00 ±141% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.__do_sys_fsmount.do_syscall_64
1.31 ±222% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.__unlock_mount.do_move_mount
0.01 ± 37% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.attach_recursive_mnt.isra
0.10 ±198% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.clone_mnt.copy_tree
0.11 ± 48% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.do_lock_mount.part
0.02 ± 72% +231.7% 0.06 ± 14% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.do_umount.path_umount
0.04 ±181% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.get_mountpoint.attach_recursive_mnt
0.10 ± 48% -80.2% 0.02 ±193% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.mntput_no_expire_slowpath.namespace_unlock
0.12 ± 76% -99.0% 0.00 ±223% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.mntput_no_expire_slowpath.path_umount
0.14 ±110% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.prepend_path.__d_path
0.02 ±102% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.set_root.nd_jump_root
0.29 ±174% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.sget_fc.get_tree_nodev
0.02 ±149% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.xa_erase.cleanup_mnt
0.08 ± 21% +3073.8% 2.48 ± 10% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity
0.01 ± 55% +288.0% 0.03 ± 52% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.cpu_stop_queue_work.stop_one_cpu.sched_exec
0.01 ± 91% +67526.8% 4.62 ±137% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.d_path.perf_event_mmap_event.perf_event_mmap
0.09 ± 97% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.down_write.do_lock_mount.part
0.07 ±193% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.down_write.do_umount.path_umount
0.22 ±212% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.fast_dput.dput.path_umount
0.02 ±155% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.fast_dput.dput.terminate_walk
0.08 ± 97% -93.9% 0.00 ±223% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.flush_tlb_mm_range.tlb_finish_mmu.change_prot_numa
0.03 ± 91% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.prepend_path.__d_path.seq_path_root
0.00 ±223% +76560.0% 0.64 ±163% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.try_to_unlazy.complete_walk.do_open
0.00 ±223% +1211.1% 0.02 ± 95% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.try_to_unlazy.lookup_fast.link_path_walk
0.00 ±223% +8280.0% 0.07 ± 18% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.try_to_unlazy.pick_link.step_into_slowpath
0.04 ±105% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.up_write.namespace_unlock.do_move_mount
0.03 ±125% -100.0% 0.00 perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.up_write.namespace_unlock.do_umount
0.82 ± 15% -97.2% 0.02 ± 63% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.vprintk_emit.devkmsg_emit.constprop
0.06 ± 28% +2032.7% 1.30 ± 81% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.schedule_hrtimeout_range_clock.ep_poll.do_epoll_wait.__x64_sys_epoll_wait
0.02 ± 33% +311.1% 0.08 ± 98% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.do_umount
0.02 ± 53% +332.3% 0.07 ± 31% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.schedule_timeout.kcompactd.kthread.ret_from_fork
0.01 ± 67% +19158.2% 1.77 ±148% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.schedule_timeout.wait_for_completion_state.kernel_clone.__x64_sys_vfork
0.03 ± 25% +44693.6% 11.65 ± 39% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
0.01 ± 13% +944.1% 0.06 ± 93% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.wait_for_partner.fifo_open.do_dentry_open.vfs_open
0.23 ± 23% +12972.2% 30.35 ± 26% perf-sched.sch_delay.avg.ms.perf_trace_sched_switch.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
0.02 ± 34% +2.3e+06% 367.57 ±141% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.anon_pipe_read.vfs_read.ksys_read.do_syscall_64
10.68 ± 73% +1737.5% 196.31 ± 64% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.devkmsg_read.vfs_read.ksys_read.do_syscall_64
11.85 ±110% -99.0% 0.12 ± 55% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
1.61 ± 36% -100.0% 0.00 ±223% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsconfig
5.09 ±148% -99.5% 0.03 ±223% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsmount
0.50 ±149% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsopen
4.53 ±155% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.move_mount
42.98 ± 29% -100.0% 0.00 ±223% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.exp_funnel_lock.synchronize_rcu_expedited.namespace_unlock.do_umount
4.53 ± 32% -99.5% 0.02 ± 37% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown]
3.12 ± 23% -99.4% 0.02 ±223% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown].[unknown]
0.04 ±100% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.clock_nanosleep.[unknown]
0.33 ±150% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.shim_nanosleep_uint64.[unknown]
0.06 ± 34% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_mwc1
0.02 ± 22% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_umount_mounter.[unknown]
0.30 ±173% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_umount_umount
0.08 ± 99% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_umount_umounter
0.06 ±107% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.umount
0.68 ±132% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.umount2
0.04 ±132% -97.4% 0.00 ±223% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_call_function_single.[unknown]
0.01 ± 43% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_call_function_single.umount2
0.03 ± 24% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.__pi_memset
0.57 ±131% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irqrestore
0.01 ± 85% +1.5e+05% 11.24 ± 85% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.path_init
0.55 ±135% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.pcpu_alloc_noprof
0.02 ±117% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.__mutex_lock.constprop.0
2.61 ± 4% -96.8% 0.08 ± 97% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.__sync_rcu_exp_select_node_cpus.kthread_worker_fn.kthread
7.15 ±145% -100.0% 0.00 ±141% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.__do_sys_fsmount.do_syscall_64
3.92 ±222% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.__unlock_mount.do_move_mount
0.04 ±105% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.attach_recursive_mnt.isra
0.10 ±182% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.clone_mnt.copy_tree
3.73 ± 89% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.do_lock_mount.part
0.04 ±160% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.get_mountpoint.attach_recursive_mnt
21.08 ± 80% -99.9% 0.02 ±188% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.mntput_no_expire_slowpath.namespace_unlock
15.63 ± 89% -100.0% 0.00 ±223% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.mntput_no_expire_slowpath.path_umount
4.17 ±151% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.prepend_path.__d_path
0.07 ±151% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.set_root.nd_jump_root
0.30 ±171% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.sget_fc.get_tree_nodev
0.10 ±205% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.xa_erase.cleanup_mnt
15.32 ± 17% +6951.2% 1080 ± 22% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity
1.11 ± 80% -96.7% 0.04 ±136% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.cpu_stop_queue_work.stop_one_cpu.migrate_task_to
0.01 ± 87% +9.6e+05% 78.61 ±133% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.d_path.perf_event_mmap_event.perf_event_mmap
0.91 ± 80% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.down_write.do_lock_mount.part
2.29 ±219% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.down_write.do_umount.path_umount
0.23 ±202% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.fast_dput.dput.path_umount
0.05 ±166% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.fast_dput.dput.terminate_walk
0.72 ± 95% -99.4% 0.00 ±223% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.flush_tlb_mm_range.tlb_finish_mmu.change_prot_numa
0.32 ± 90% -92.8% 0.02 ±173% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.lookup_mnt.__traverse_mounts.step_into_slowpath
0.27 ±118% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.prepend_path.__d_path.seq_path_root
0.00 ±223% +1.1e+06% 9.42 ±174% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.try_to_unlazy.complete_walk.do_open
0.00 ±223% +3655.6% 0.06 ±120% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.try_to_unlazy.lookup_fast.link_path_walk
0.00 ±223% +20840.0% 0.17 ± 21% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.try_to_unlazy.pick_link.step_into_slowpath
0.72 ±117% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.up_write.namespace_unlock.do_move_mount
1.04 ±188% -100.0% 0.00 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.up_write.namespace_unlock.do_umount
6.34 ± 54% -98.6% 0.09 ±105% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.vprintk_emit.devkmsg_emit.constprop
23.09 ± 36% -99.1% 0.20 ±101% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.schedule_preempt_disabled.rwsem_down_read_slowpath.down_read.m_start
30.80 ± 44% -99.6% 0.12 ± 47% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.do_lock_mount
0.06 ±164% -96.3% 0.00 ±223% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.schedule_timeout.wait_for_completion.affine_move_task.__set_cpus_allowed_ptr
9.24 ± 30% +14386.8% 1338 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
11.70 ±104% -99.0% 0.12 ± 48% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.synchronize_rcu_expedited.namespace_unlock.do_umount.path_umount
0.02 ± 71% +2303.7% 0.43 ±140% perf-sched.sch_delay.max.ms.perf_trace_sched_switch.wait_for_partner.fifo_open.do_dentry_open.vfs_open
14.59 ± 9% +9091.4% 1341 perf-sched.sch_delay.max.ms.perf_trace_sched_switch.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
0.01 ± 21% +38669.0% 3.75 ± 25% perf-sched.total_sch_delay.average.ms
47.86 ± 25% +2808.4% 1392 ± 6% perf-sched.total_sch_delay.max.ms
1.06 ± 6% +14885.1% 159.57 ± 14% perf-sched.total_wait_and_delay.average.ms
6154176 ± 7% -99.8% 12170 ± 19% perf-sched.total_wait_and_delay.count.ms
3552 ± 15% +54.4% 5484 ± 9% perf-sched.total_wait_and_delay.max.ms
1.06 ± 6% +14664.8% 155.82 ± 14% perf-sched.total_wait_time.average.ms
3552 ± 15% +54.1% 5474 ± 9% perf-sched.total_wait_time.max.ms
799.54 -49.8% 401.38 ± 19% perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.__x64_sys_pause.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
0.24 ± 2% +268.1% 0.89 ± 53% perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.do_nanosleep.hrtimer_nanosleep.common_nsleep.__x64_sys_clock_nanosleep
1.54 ± 2% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsconfig
3.74 ± 5% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsmount
4.49 ± 6% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.move_mount
2.79 ± 5% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.umount2
3.38 ± 5% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.exp_funnel_lock.synchronize_rcu_expedited.namespace_unlock.do_umount
2.65 ± 36% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown]
5.77 ± 29% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_umount_mounter.[unknown]
1.49 ± 22% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.umount2
2.17 ± 28% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.__pi_memset
7.29 ± 68% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irqrestore
12.41 ±178% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.pcpu_alloc_noprof
4.64 ± 44% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.__mutex_lock.constprop.0
5.66 ± 12% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.__do_sys_fsmount.do_syscall_64
3.59 ± 17% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.attach_recursive_mnt.isra
6.54 ± 10% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.do_lock_mount.part
3.37 ± 14% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.do_umount.path_umount
6.28 ± 72% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.get_mountpoint.attach_recursive_mnt
6.08 ± 4% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.mntput_no_expire_slowpath.namespace_unlock
5.76 ± 3% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.mntput_no_expire_slowpath.path_umount
8.71 ± 14% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.prepend_path.__d_path
3.22 ± 33% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.sget_fc.get_tree_nodev
5.18 ± 23% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.xa_erase.cleanup_mnt
3.09 ± 9% +249.9% 10.80 ± 20% perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity
2.87 ± 25% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.cpu_stop_queue_work.stop_one_cpu.migrate_task_to
3.65 ± 17% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.down_write.do_lock_mount.part
3.37 ± 17% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.down_write.do_umount.path_umount
4.84 ± 13% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.flush_tlb_mm_range.tlb_finish_mmu.change_prot_numa
2.48 ± 27% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.lookup_mnt.__traverse_mounts.step_into_slowpath
9.61 ± 8% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.prepend_path.__d_path.seq_path_root
4.11 ± 16% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.up_write.namespace_unlock.do_move_mount
3.34 ± 11% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.up_write.namespace_unlock.do_umount
1.64 ± 15% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.vprintk_emit.devkmsg_emit.constprop
11.23 ± 32% -81.7% 2.06 ±123% perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.schedule_hrtimeout_range_clock.ep_poll.do_epoll_wait.__x64_sys_epoll_wait
129.53 ± 30% +338.0% 567.28 ± 4% perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.schedule_hrtimeout_range_clock.poll_schedule_timeout.constprop.0
9.34 -99.5% 0.05 ±100% perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.schedule_preempt_disabled.rwsem_down_read_slowpath.down_read.m_start
2.39 ± 5% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.do_lock_mount
1.83 ± 3% -63.4% 0.67 ± 49% perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.do_umount
3.78 +29.1% 4.88 ± 11% perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
150.37 ± 16% +329.8% 646.28 ± 3% perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
3.21 ± 17% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.synchronize_rcu_expedited.namespace_unlock.do_umount.path_umount
19.36 ± 4% +4532.3% 896.73 ± 6% perf-sched.wait_and_delay.avg.ms.perf_trace_sched_switch.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
37.00 -38.7% 22.67 ± 10% perf-sched.wait_and_delay.count.perf_trace_sched_switch.anon_pipe_read.vfs_read.ksys_read.do_syscall_64
5439762 ± 4% -99.9% 5142 ± 36% perf-sched.wait_and_delay.count.perf_trace_sched_switch.do_nanosleep.hrtimer_nanosleep.common_nsleep.__x64_sys_clock_nanosleep
1769 ± 18% -99.9% 2.00 ±100% perf-sched.wait_and_delay.count.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
474.67 ± 23% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsconfig
426.50 ± 33% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsmount
527.00 ± 30% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.move_mount
4818 ± 28% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.umount2
48588 ± 26% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.exp_funnel_lock.synchronize_rcu_expedited.namespace_unlock.do_umount
7.83 ± 47% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown]
4.00 ± 38% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_umount_mounter.[unknown]
34.33 ± 25% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.umount2
249404 ± 65% -100.0% 118.00 ± 53% perf-sched.wait_and_delay.count.perf_trace_sched_switch.kthread_worker_fn.kthread.ret_from_fork.ret_from_fork_asm
23.67 ± 37% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.__pi_memset
16.50 ± 29% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irqrestore
7.67 ± 30% -93.5% 0.50 ±152% perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.memcpy_toio
14.83 ± 15% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.pcpu_alloc_noprof
3.50 ± 39% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk.__mutex_lock.constprop.0
49.50 ± 43% -98.0% 1.00 ±115% perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk.__sync_rcu_exp_select_node_cpus.kthread_worker_fn.kthread
347.00 ± 15% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.__do_sys_fsmount.do_syscall_64
12.00 ± 33% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.attach_recursive_mnt.isra
392.00 ± 19% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.do_lock_mount.part
61.50 ± 11% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.do_umount.path_umount
2.50 ± 50% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.get_mountpoint.attach_recursive_mnt
2442 ± 27% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.mntput_no_expire_slowpath.namespace_unlock
1462 ± 34% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.mntput_no_expire_slowpath.path_umount
199.67 ± 42% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.prepend_path.__d_path
2.17 ± 67% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.sget_fc.get_tree_nodev
3.50 ± 48% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.xa_erase.cleanup_mnt
1194 ± 8% -15.6% 1008 ± 5% perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity
56.33 ± 25% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk.cpu_stop_queue_work.stop_one_cpu.migrate_task_to
16.83 ± 25% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk.down_write.do_lock_mount.part
47.17 ± 18% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk.down_write.do_umount.path_umount
13.67 ± 20% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk.flush_tlb_mm_range.tlb_finish_mmu.change_prot_numa
32.50 ± 25% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk.lookup_mnt.__traverse_mounts.step_into_slowpath
10.67 ± 64% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk.prepend_path.__d_path.seq_path_root
20.50 ± 24% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk.up_write.namespace_unlock.do_move_mount
41.00 ± 14% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk.up_write.namespace_unlock.do_umount
139.83 ± 21% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.preempt_schedule_thunk.vprintk_emit.devkmsg_emit.constprop
491.83 ± 35% -93.2% 33.67 ±106% perf-sched.wait_and_delay.count.perf_trace_sched_switch.schedule_hrtimeout_range_clock.ep_poll.do_epoll_wait.__x64_sys_epoll_wait
92.00 ± 25% -73.2% 24.67 ± 7% perf-sched.wait_and_delay.count.perf_trace_sched_switch.schedule_hrtimeout_range_clock.poll_schedule_timeout.constprop.0
9630 ± 61% -100.0% 0.33 ±223% perf-sched.wait_and_delay.count.perf_trace_sched_switch.schedule_preempt_disabled.__mutex_lock.constprop.0
118616 -99.9% 112.50 ±100% perf-sched.wait_and_delay.count.perf_trace_sched_switch.schedule_preempt_disabled.rwsem_down_read_slowpath.down_read.m_start
38829 -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.do_lock_mount
117840 ± 8% -99.8% 261.33 ± 13% perf-sched.wait_and_delay.count.perf_trace_sched_switch.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.do_umount
14376 ± 14% -87.1% 1849 ± 6% perf-sched.wait_and_delay.count.perf_trace_sched_switch.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
17835 ± 65% -100.0% 0.00 perf-sched.wait_and_delay.count.perf_trace_sched_switch.synchronize_rcu_expedited.namespace_unlock.do_umount.path_umount
59489 ± 5% -99.1% 551.67 ± 17% perf-sched.wait_and_delay.count.perf_trace_sched_switch.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
1555 ± 23% +88.4% 2930 ± 5% perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.anon_pipe_read.fifo_pipe_read.vfs_read.ksys_read
1001 +13.2% 1133 ± 2% perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.anon_pipe_read.vfs_read.ksys_read.do_syscall_64
13.17 ± 16% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsconfig
22.89 ± 59% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsmount
17.68 ± 32% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.move_mount
28.45 ± 48% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.umount2
76.49 ± 37% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.exp_funnel_lock.synchronize_rcu_expedited.namespace_unlock.do_umount
9.55 ± 24% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown]
8.23 ± 14% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_umount_mounter.[unknown]
10.57 ± 16% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.umount2
11.56 ± 24% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.__pi_memset
32.87 ± 81% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irqrestore
174.40 ±211% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.pcpu_alloc_noprof
8.99 ± 44% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.__mutex_lock.constprop.0
28.65 ± 52% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.__do_sys_fsmount.do_syscall_64
11.22 ± 17% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.attach_recursive_mnt.isra
22.86 ± 13% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.do_lock_mount.part
11.92 ± 6% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.do_umount.path_umount
9.11 ± 49% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.get_mountpoint.attach_recursive_mnt
36.19 ± 40% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.mntput_no_expire_slowpath.namespace_unlock
38.98 ± 61% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.mntput_no_expire_slowpath.path_umount
20.29 ± 80% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.prepend_path.__d_path
5.57 ± 66% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.sget_fc.get_tree_nodev
10.36 ± 36% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.xa_erase.cleanup_mnt
1000 +275.2% 3754 ± 38% perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity
12.97 ± 27% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.cpu_stop_queue_work.stop_one_cpu.migrate_task_to
11.31 ± 24% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.down_write.do_lock_mount.part
16.26 ± 52% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.down_write.do_umount.path_umount
12.30 ± 20% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.flush_tlb_mm_range.tlb_finish_mmu.change_prot_numa
10.89 ± 21% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.lookup_mnt.__traverse_mounts.step_into_slowpath
11.78 ± 8% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.prepend_path.__d_path.seq_path_root
2.24 ±223% +4440.6% 101.63 ±164% perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.try_to_unlazy.complete_walk.path_lookupat
11.45 ± 6% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.up_write.namespace_unlock.do_move_mount
12.15 ± 17% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.up_write.namespace_unlock.do_umount
12.68 ± 54% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.vprintk_emit.devkmsg_emit.constprop
44.52 ± 33% -99.6% 0.20 ±101% perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.schedule_preempt_disabled.rwsem_down_read_slowpath.down_read.m_start
43.14 ± 24% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.do_lock_mount
9.93 ± 24% +641.9% 73.71 ±101% perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
2661 ± 13% +26.2% 3359 ± 10% perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
29.37 ± 66% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.synchronize_rcu_expedited.namespace_unlock.do_umount.path_umount
3498 ± 17% +55.0% 5420 ± 11% perf-sched.wait_and_delay.max.ms.perf_trace_sched_switch.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
799.53 -49.8% 401.36 ± 19% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.__x64_sys_pause.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
0.24 ± 2% +238.3% 0.80 ± 62% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.do_nanosleep.hrtimer_nanosleep.common_nsleep.__x64_sys_clock_nanosleep
23.57 ± 46% +145.3% 57.82 ± 15% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.do_task_dead.do_exit.do_group_exit.__x64_sys_exit_group
0.48 ± 3% +34811.7% 168.91 ± 26% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.do_wait.kernel_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.52 ± 2% -88.4% 0.18 ±223% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsconfig
2.64 ± 53% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsopen
4.47 ± 6% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.move_mount
0.30 ±203% +56061.3% 165.77 ±150% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.sched_setaffinity
3.36 ± 5% -94.8% 0.17 ±223% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.exp_funnel_lock.synchronize_rcu_expedited.namespace_unlock.do_umount
1.67 ± 50% -98.7% 0.02 ± 39% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown]
1.06 ±135% -98.1% 0.02 ±223% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown].[unknown]
0.91 ±204% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.clock_nanosleep.[unknown]
0.10 ± 37% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.shim_nanosleep_uint64.[unknown]
0.74 ± 54% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_mwc1
5.76 ± 29% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_umount_mounter.[unknown]
0.68 ± 81% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_umount_umount
0.06 ± 12% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_umount_umounter
0.12 ± 81% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.umount
1.45 ± 24% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.umount2
0.20 ±114% -99.6% 0.00 ±223% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_call_function_single.[unknown]
0.05 ± 30% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_call_function_single.umount2
2.16 ± 28% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.__pi_memset
7.24 ± 69% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irqrestore
3.17 ± 47% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.copy_folio_from_iter_atomic
12.37 ±179% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.pcpu_alloc_noprof
4.63 ± 44% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.__mutex_lock.constprop.0
5.51 ± 12% -93.6% 0.35 ±141% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.__do_sys_fsmount.do_syscall_64
3.52 ± 48% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.__unlock_mount.do_move_mount
3.58 ± 17% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.attach_recursive_mnt.isra
6.39 ± 59% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.clone_mnt.copy_tree
6.43 ± 9% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.do_lock_mount.part
6.24 ± 72% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.get_mountpoint.attach_recursive_mnt
8.57 ± 14% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.prepend_path.__d_path
0.24 ±148% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.set_root.nd_jump_root
2.93 ± 35% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.sget_fc.get_tree_nodev
5.16 ± 23% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.xa_erase.cleanup_mnt
3.01 ± 9% +176.5% 8.32 ± 25% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity
2.84 ± 25% -95.3% 0.13 ±111% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.cpu_stop_queue_work.stop_one_cpu.migrate_task_to
0.00 ±223% +800.0% 0.01 ± 62% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.cpu_stop_queue_work.stop_one_cpu.sched_exec
0.01 ±121% +82757.6% 4.56 ±137% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.d_path.perf_event_mmap_event.perf_event_mmap
3.56 ± 17% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.down_write.do_lock_mount.part
3.31 ± 15% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.down_write.do_umount.path_umount
2.77 ± 61% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.fast_dput.dput.path_umount
0.32 ±114% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.fast_dput.dput.terminate_walk
4.76 ± 14% -99.9% 0.00 ±223% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.flush_tlb_mm_range.tlb_finish_mmu.change_prot_numa
2.45 ± 27% -91.1% 0.22 ±129% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.lookup_mnt.__traverse_mounts.step_into_slowpath
9.58 ± 8% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.prepend_path.__d_path.seq_path_root
0.00 ±223% +1144.4% 0.02 ±101% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.try_to_unlazy.lookup_fast.link_path_walk
0.31 ±105% +2.3e+05% 728.74 ± 32% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.try_to_unlazy_next.lookup_fast.open_last_lookups
4.07 ± 17% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.up_write.namespace_unlock.do_move_mount
3.31 ± 11% -100.0% 0.00 perf-sched.wait_time.avg.ms.perf_trace_sched_switch.preempt_schedule_thunk.up_write.namespace_unlock.do_umount
11.17 ± 32% -83.2% 1.88 ± 61% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.schedule_hrtimeout_range_clock.ep_poll.do_epoll_wait.__x64_sys_epoll_wait
129.48 ± 30% +338.0% 567.13 ± 4% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.schedule_hrtimeout_range_clock.poll_schedule_timeout.constprop.0
9.31 -100.0% 0.00 ±223% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.schedule_preempt_disabled.rwsem_down_read_slowpath.down_read.m_start
1.81 ± 3% -67.4% 0.59 ± 55% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.do_umount
29.92 ± 12% +545.3% 193.05 ± 63% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.schedule_timeout.msleep.ast_astdp_connector_helper_detect_ctx.drm_helper_probe_detect_ctx
3.75 +29.6% 4.86 ± 11% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
0.66 ± 6% +29174.6% 193.31 ± 26% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.schedule_timeout.wait_for_completion_state.kernel_clone.__x64_sys_vfork
150.35 ± 16% +322.1% 634.64 ± 3% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
3.20 ± 17% -51.6% 1.55 ± 58% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.synchronize_rcu_expedited.namespace_unlock.do_umount.path_umount
0.00 ± 44% +1113.3% 0.03 ±178% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.wait_for_partner.fifo_open.do_dentry_open.vfs_open
19.13 ± 4% +4429.8% 866.39 ± 6% perf-sched.wait_time.avg.ms.perf_trace_sched_switch.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
1555 ± 23% +88.4% 2930 ± 5% perf-sched.wait_time.max.ms.perf_trace_sched_switch.anon_pipe_read.fifo_pipe_read.vfs_read.ksys_read
1001 +12.4% 1125 perf-sched.wait_time.max.ms.perf_trace_sched_switch.anon_pipe_read.vfs_read.ksys_read.do_syscall_64
3.33 ± 15% +56483.6% 1882 ± 8% perf-sched.wait_time.max.ms.perf_trace_sched_switch.do_wait.kernel_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe
12.85 ± 12% -98.6% 0.18 ±223% perf-sched.wait_time.max.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsconfig
18.69 ± 31% -84.6% 2.88 ±223% perf-sched.wait_time.max.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsmount
8.09 ± 68% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.fsopen
17.51 ± 32% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.move_mount
38.20 ± 38% -99.5% 0.17 ±223% perf-sched.wait_time.max.ms.perf_trace_sched_switch.exp_funnel_lock.synchronize_rcu_expedited.namespace_unlock.do_umount
5.91 ± 17% -99.6% 0.02 ± 37% perf-sched.wait_time.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown]
176.10 ±209% -100.0% 0.02 ±223% perf-sched.wait_time.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown].[unknown]
1.76 ±212% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.clock_nanosleep.[unknown]
1.02 ± 77% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.shim_nanosleep_uint64.[unknown]
6.73 ± 47% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_mwc1
8.22 ± 14% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_umount_mounter.[unknown]
6.14 ± 78% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_umount_umount
0.12 ± 66% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.stress_umount_umounter
0.26 ±137% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.umount
10.30 ± 13% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_apic_timer_interrupt.umount2
0.21 ±107% -99.5% 0.00 ±223% perf-sched.wait_time.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_call_function_single.[unknown]
0.06 ± 24% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.irqentry_exit.asm_sysvec_call_function_single.umount2
11.55 ± 24% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.__pi_memset
32.85 ± 81% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt._raw_spin_unlock_irqrestore
8.75 ± 48% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.copy_folio_from_iter_atomic
0.63 ±145% +77934.5% 494.87 ± 98% perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.path_init
174.39 ±211% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_irq.irqentry_exit.asm_sysvec_apic_timer_interrupt.pcpu_alloc_noprof
8.98 ± 44% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.__mutex_lock.constprop.0
22.98 ± 18% -98.5% 0.35 ±141% perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.__do_sys_fsmount.do_syscall_64
7.46 ± 43% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.__unlock_mount.do_move_mount
11.22 ± 17% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.attach_recursive_mnt.isra
9.16 ± 49% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.clone_mnt.copy_tree
21.71 ± 8% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.do_lock_mount.part
11.91 ± 6% +908.8% 120.20 ± 86% perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.do_umount.path_umount
9.08 ± 49% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.get_mountpoint.attach_recursive_mnt
23.27 ± 20% -72.3% 6.45 ±103% perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.mntput_no_expire_slowpath.namespace_unlock
25.51 ± 34% -87.8% 3.12 ±223% perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.mntput_no_expire_slowpath.path_umount
16.63 ± 58% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.prepend_path.__d_path
1.44 ±153% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.set_root.nd_jump_root
5.28 ± 72% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.sget_fc.get_tree_nodev
10.26 ± 37% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk._raw_spin_unlock.xa_erase.cleanup_mnt
1000 +252.8% 3530 ± 49% perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity
12.86 ± 28% -97.9% 0.27 ±122% perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.cpu_stop_queue_work.stop_one_cpu.migrate_task_to
0.01 ±105% +1.1e+06% 78.73 ±133% perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.d_path.perf_event_mmap_event.perf_event_mmap
10.97 ± 20% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.down_write.do_lock_mount.part
14.01 ± 26% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.down_write.do_umount.path_umount
5.92 ± 71% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.fast_dput.dput.path_umount
0.99 ±160% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.fast_dput.dput.terminate_walk
12.15 ± 19% -100.0% 0.00 ±223% perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.flush_tlb_mm_range.tlb_finish_mmu.change_prot_numa
10.89 ± 21% -97.4% 0.28 ±138% perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.lookup_mnt.__traverse_mounts.step_into_slowpath
11.77 ± 8% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.prepend_path.__d_path.seq_path_root
0.00 ±223% +3655.6% 0.06 ±120% perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.try_to_unlazy.lookup_fast.link_path_walk
0.34 ±103% +2.9e+05% 975.89 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.try_to_unlazy_next.lookup_fast.open_last_lookups
11.44 ± 6% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.up_write.namespace_unlock.do_move_mount
11.49 ± 8% -100.0% 0.00 perf-sched.wait_time.max.ms.perf_trace_sched_switch.preempt_schedule_thunk.up_write.namespace_unlock.do_umount
1038 ± 69% -94.2% 59.89 ±125% perf-sched.wait_time.max.ms.perf_trace_sched_switch.schedule_hrtimeout_range_clock.ep_poll.do_epoll_wait.__x64_sys_epoll_wait
34.79 ± 31% -99.9% 0.04 ±214% perf-sched.wait_time.max.ms.perf_trace_sched_switch.schedule_preempt_disabled.rwsem_down_read_slowpath.down_read.m_start
26.39 ± 15% -73.8% 6.92 ± 86% perf-sched.wait_time.max.ms.perf_trace_sched_switch.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write.do_lock_mount
51.77 +546.3% 334.61 ± 73% perf-sched.wait_time.max.ms.perf_trace_sched_switch.schedule_timeout.msleep.ast_astdp_connector_helper_detect_ctx.drm_helper_probe_detect_ctx
7.70 ± 17% +738.0% 64.53 ±114% perf-sched.wait_time.max.ms.perf_trace_sched_switch.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
14.52 ± 16% -53.9% 6.69 ± 61% perf-sched.wait_time.max.ms.perf_trace_sched_switch.schedule_timeout.synchronize_rcu_expedited_wait_once.synchronize_rcu_expedited_wait.rcu_exp_wait_wake
0.06 ±164% -96.3% 0.00 ±223% perf-sched.wait_time.max.ms.perf_trace_sched_switch.schedule_timeout.wait_for_completion.affine_move_task.__set_cpus_allowed_ptr
3.24 ± 25% +51835.8% 1681 ± 36% perf-sched.wait_time.max.ms.perf_trace_sched_switch.schedule_timeout.wait_for_completion_state.kernel_clone.__x64_sys_vfork
22.63 ± 29% -55.0% 10.18 ± 49% perf-sched.wait_time.max.ms.perf_trace_sched_switch.synchronize_rcu_expedited.namespace_unlock.do_umount.path_umount
3498 ± 17% +53.6% 5373 ± 12% perf-sched.wait_time.max.ms.perf_trace_sched_switch.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
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
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next reply other threads:[~2026-07-15 13:55 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-15 13:55 kernel test robot [this message]
2026-07-15 14:25 ` [linux-next:master] [loop] d908729e74: stress-ng.umount.ops_per_sec 100.0% regression Tetsuo Handa
2026-07-15 14:30 ` Christoph Hellwig
2026-07-15 14:45 ` Tetsuo Handa
2026-07-15 14:53 ` Christoph Hellwig
2026-07-15 16:02 ` Mark Brown
2026-07-15 14:57 ` Mark Brown
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