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Message-ID: <5d611439-3b09-af07-b579-139eee276a70@leemhuis.info>
Date: Sun, 4 Sep 2022 12:44:11 +0200
From: Thorsten Leemhuis <regressions@...mhuis.info>
To: regressions@...ts.linux.dev
Cc: lkp@...ts.01.org, kernel test robot <lkp@...el.com>,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: [copy_page_{to,from}_iter()] 59bb69c67c: hackbench.throughput
-37.6% regression
Hi, this is your Linux kernel regression tracker. Top-posting for once,
to make this easily accessible to everyone.
As per recent general discussions with the 0-day folks, I'm dropping
below regression from the list of tracked issues, as there were no
replies from any developers the report was sent to. That for example can
happen if the developers considered the difference of no practical
relevance, as they assume it only materializes in micro-benchmarks.
Not sure if that or something else is the reason why this particular
report was ignored, but I lack the bandwidth to follow-up on each and
every some CI system found and reported. At the same time I don't want
to keep these reports in the list of tracked issues forever, as that
creates noise and makes it harder to spot the important issues in
regzbot's reports and lists. That's why I hearby remove it:
#regzbot invalid: 0-day report that didn't get tracktion; might be of no
relevance
Ciao, Thorsten
On 22.08.22 03:13, kernel test robot wrote:
> Greeting,
>
> FYI, we noticed a -37.6% regression of hackbench.throughput due to commit:
>
>
> commit: 59bb69c67cf1475a04cd5629d9c4f6dbbcba5e4a
> ("copy_page_{to,from}_iter(): switch iovec variants to generic")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
>
> in testcase: hackbench
> on test machine: 144 threads 4 sockets Intel(R) Xeon(R) Gold 5318H CPU @
> 2.50GHz with 128G memory
> with following parameters:
>
> nr_threads: 100%
> iterations: 4
> mode: threads
> ipc: pipe
> cpufreq_governor: performance
> ucode: 0x7002501
>
> test-description: Hackbench is both a benchmark and a stress test for
> the Linux kernel scheduler.
> test-url:
> https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/sched/cfs-scheduler/hackbench.c
>
>
> If you fix the issue, kindly add following tag
> Reported-by: kernel test robot <yujie.liu@...el.com>
>
>
> To reproduce:
>
> git clone https://github.com/intel/lkp-tests.git
> cd lkp-tests
> sudo bin/lkp install job.yaml # job file is attached
> in this email
> bin/lkp split-job --compatible job.yaml # generate the yaml file
> for lkp run
> sudo bin/lkp run generated-yaml-file
>
> # if come across any failure that blocks the test,
> # please remove ~/.lkp and /lkp dir to run from a clean state.
>
> =========================================================================================
> compiler/cpufreq_governor/ipc/iterations/kconfig/mode/nr_threads/rootfs/tbox_group/testcase/ucode:
>
> gcc-11/performance/pipe/4/x86_64-rhel-8.3/threads/100%/debian-11.1-x86_64-20220510.cgz/lkp-cpl-4sp1/hackbench/0x7002501
>
> commit:
> 164f4064ca ("keep iocb_flags() result cached in struct file")
> 59bb69c67c ("copy_page_{to,from}_iter(): switch iovec variants to
> generic")
>
> 164f4064ca81eefc 59bb69c67cf1475a04cd5629d9c
> ---------------- ---------------------------
> %stddev %change %stddev
> \ | \
> 489102 -37.6% 305349 ± 13% hackbench.throughput
> 152.60 +80.1% 274.90 ± 10% hackbench.time.elapsed_time
> 152.60 +80.1% 274.90 ± 10%
> hackbench.time.elapsed_time.max
> 1.404e+09 +101.3% 2.827e+09 ± 14%
> hackbench.time.involuntary_context_switches
> 986.17 ± 18% +136.2% 2328 ± 15%
> hackbench.time.major_page_faults
> 274197 ± 3% +142.3% 664339 ± 13%
> hackbench.time.minor_page_faults
> 13936 -3.2% 13497
> hackbench.time.percent_of_cpu_this_job_got
> 19872 +75.3% 34829 ± 11% hackbench.time.system_time
> 1396 +63.5% 2282 ± 11% hackbench.time.user_time
> 2.338e+09 +79.0% 4.184e+09 ± 9%
> hackbench.time.voluntary_context_switches
> 13265456 ± 10% -22.9% 10229449 ± 9% cpuidle..usage
> 198.33 +61.5% 320.24 ± 9% uptime.boot
> 1.33 ± 5% +3.6 4.95 ± 6% mpstat.cpu.all.irq%
> 0.04 ± 2% -0.0 0.04 ± 9% mpstat.cpu.all.soft%
> 1463 +22.3% 1789 ± 6% vmstat.procs.r
> 1813234 +53.8% 2788498 ± 8% vmstat.system.in
> 57096 ± 14% +133.1% 133100 ± 49% meminfo.Active
> 56878 ± 14% +133.8% 132977 ± 49% meminfo.Active(anon)
> 160758 ± 2% +34.3% 215911 ± 6% meminfo.AnonHugePages
> 326854 ± 3% +95.0% 637420 ± 7% meminfo.Mapped
> 3031 +2.1% 3093 turbostat.Bzy_MHz
> 0.45 ± 67% -89.6% 0.05 ± 38% turbostat.CPU%c6
> 0.15 -23.3% 0.12 ± 6% turbostat.IPC
> 3.029e+08 +172.5% 8.253e+08 ± 4% turbostat.IRQ
> 3398377 ± 7% -84.7% 520088 ± 12% turbostat.POLL
> 0.05 ± 15% -0.0 0.01 ± 70% turbostat.POLL%
> 10.02 +37.7% 13.79 turbostat.RAMWatt
> 14027902 ± 16% -69.3% 4313384 ± 24%
> numa-numastat.node0.local_node
> 14083684 ± 16% -69.1% 4354549 ± 24% numa-numastat.node0.numa_hit
> 12038117 ± 13% -62.5% 4519914 ± 37%
> numa-numastat.node1.local_node
> 12092443 ± 13% -62.2% 4567078 ± 36% numa-numastat.node1.numa_hit
> 11573244 ± 6% -67.1% 3801899 ± 10%
> numa-numastat.node2.local_node
> 11615332 ± 6% -66.8% 3851401 ± 11% numa-numastat.node2.numa_hit
> 11405434 ± 9% -55.6% 5062395 ± 23%
> numa-numastat.node3.local_node
> 11447818 ± 9% -55.3% 5119841 ± 23% numa-numastat.node3.numa_hit
> 67489 ± 18% +63.9% 110630 ± 13% numa-meminfo.node0.Mapped
> 4571 ±136% +348.9% 20520 ± 81%
> numa-meminfo.node1.AnonHugePages
> 66557 ± 20% +48.4% 98758 ± 13% numa-meminfo.node1.Mapped
> 5303 ± 3% +11.7% 5921 ± 7%
> numa-meminfo.node2.KernelStack
> 52917 ± 2% +86.7% 98805 ± 6% numa-meminfo.node2.Mapped
> 53719 ± 13% +80.8% 97098 ± 14% numa-meminfo.node3.Active
> 53607 ± 13% +81.1% 97079 ± 14%
> numa-meminfo.node3.Active(anon)
> 141608 ± 5% +135.7% 333801 ± 9% numa-meminfo.node3.Mapped
> 1295651 ± 28% +84.6% 2391708 ± 42% numa-meminfo.node3.MemUsed
> 17123 ± 18% +62.9% 27899 ± 14% numa-vmstat.node0.nr_mapped
> 14083744 ± 16% -69.1% 4354624 ± 24% numa-vmstat.node0.numa_hit
> 14027962 ± 16% -69.3% 4313459 ± 24% numa-vmstat.node0.numa_local
> 16922 ± 19% +46.8% 24848 ± 13% numa-vmstat.node1.nr_mapped
> 12092369 ± 13% -62.2% 4567042 ± 36% numa-vmstat.node1.numa_hit
> 12038043 ± 13% -62.5% 4519877 ± 37% numa-vmstat.node1.numa_local
> 5303 ± 3% +11.6% 5920 ± 7%
> numa-vmstat.node2.nr_kernel_stack
> 13496 ± 3% +84.4% 24884 ± 6% numa-vmstat.node2.nr_mapped
> 11615668 ± 6% -66.8% 3851152 ± 11% numa-vmstat.node2.numa_hit
> 11573580 ± 6% -67.2% 3801650 ± 10% numa-vmstat.node2.numa_local
> 13880 ± 14% +75.0% 24296 ± 16%
> numa-vmstat.node3.nr_active_anon
> 36367 ± 6% +130.7% 83911 ± 10% numa-vmstat.node3.nr_mapped
> 13880 ± 14% +75.0% 24296 ± 16%
> numa-vmstat.node3.nr_zone_active_anon
> 11447946 ± 9% -55.3% 5119567 ± 23% numa-vmstat.node3.numa_hit
> 11405562 ± 9% -55.6% 5062121 ± 23% numa-vmstat.node3.numa_local
> 14221 ± 12% +133.7% 33239 ± 49% proc-vmstat.nr_active_anon
> 87510 +6.3% 92997 proc-vmstat.nr_anon_pages
> 100316 -6.2% 94080 proc-vmstat.nr_kernel_stack
> 81858 ± 2% +94.7% 159397 ± 8% proc-vmstat.nr_mapped
> 1443 +4.9% 1514
> proc-vmstat.nr_page_table_pages
> 34015 +2.0% 34707
> proc-vmstat.nr_slab_reclaimable
> 99374 -1.6% 97758
> proc-vmstat.nr_slab_unreclaimable
> 14221 ± 12% +133.7% 33239 ± 49%
> proc-vmstat.nr_zone_active_anon
> 367327 ± 10% +98.5% 729299 ± 8% proc-vmstat.numa_hint_faults
> 219391 ± 8% +139.8% 526037 ± 11%
> proc-vmstat.numa_hint_faults_local
> 49242297 ± 2% -63.7% 17894676 ± 14% proc-vmstat.numa_hit
> 49047749 ± 2% -63.9% 17699399 ± 14% proc-vmstat.numa_local
> 62425 ± 11% +70.6% 106470 ± 14%
> proc-vmstat.numa_pages_migrated
> 590356 ± 8% +72.2% 1016367 ± 5% proc-vmstat.numa_pte_updates
> 49230729 ± 2% -63.7% 17893980 ± 14% proc-vmstat.pgalloc_normal
> 1177103 ± 2% +52.5% 1795115 ± 5% proc-vmstat.pgfault
> 48382203 ± 2% -64.7% 17055561 ± 12% proc-vmstat.pgfree
> 62425 ± 11% +70.6% 106470 ± 14% proc-vmstat.pgmigrate_success
> 24411 +33.8% 32664 ± 6% proc-vmstat.pgreuse
> 0.56 ± 44% +288.5% 2.16 ± 61%
> sched_debug.cfs_rq:/.h_nr_running.min
> 4.62 ± 14% -50.7% 2.28 ± 25%
> sched_debug.cfs_rq:/.h_nr_running.stddev
> 31.46 ± 26% -34.9% 20.48 ± 21%
> sched_debug.cfs_rq:/.load_avg.avg
> 1.17 ± 42% +127.9% 2.66 ± 28%
> sched_debug.cfs_rq:/.load_avg.min
> 87.49 ± 18% -33.2% 58.48 ± 24%
> sched_debug.cfs_rq:/.load_avg.stddev
> 8625569 +113.5% 18419082 ± 9%
> sched_debug.cfs_rq:/.min_vruntime.avg
> 10168067 ± 3% +147.5% 25167143 ± 12%
> sched_debug.cfs_rq:/.min_vruntime.max
> 7592982 ± 2% +100.6% 15232132 ± 13%
> sched_debug.cfs_rq:/.min_vruntime.min
> 617068 ± 15% +160.1% 1604747 ± 8%
> sched_debug.cfs_rq:/.min_vruntime.stddev
> 0.69 +15.2% 0.80 ± 3%
> sched_debug.cfs_rq:/.nr_running.avg
> 0.44 ± 35% +63.1% 0.72 ± 20%
> sched_debug.cfs_rq:/.nr_running.min
> 20.05 ± 41% -53.0% 9.43 ± 36%
> sched_debug.cfs_rq:/.removed.load_avg.avg
> 341.33 -37.0% 214.90 ± 8%
> sched_debug.cfs_rq:/.removed.load_avg.max
> 78.01 ± 20% -44.9% 43.02 ± 13%
> sched_debug.cfs_rq:/.removed.load_avg.stddev
> 9.16 ± 42% -50.2% 4.56 ± 32%
> sched_debug.cfs_rq:/.removed.runnable_avg.avg
> 176.72 ± 3% -36.3% 112.65 ± 7%
> sched_debug.cfs_rq:/.removed.runnable_avg.max
> 36.16 ± 20% -41.7% 21.08 ± 11%
> sched_debug.cfs_rq:/.removed.runnable_avg.stddev
> 9.16 ± 42% -50.3% 4.55 ± 32%
> sched_debug.cfs_rq:/.removed.util_avg.avg
> 176.72 ± 3% -36.4% 112.42 ± 8%
> sched_debug.cfs_rq:/.removed.util_avg.max
> 36.16 ± 20% -41.8% 21.06 ± 11%
> sched_debug.cfs_rq:/.removed.util_avg.stddev
> 1638316 ± 32% +285.2% 6311285 ± 18%
> sched_debug.cfs_rq:/.spread0.max
> -846609 +332.4% -3660690
> sched_debug.cfs_rq:/.spread0.min
> 600389 ± 15% +164.3% 1586953 ± 7%
> sched_debug.cfs_rq:/.spread0.stddev
> 724.12 ± 2% +15.6% 836.78 ± 4%
> sched_debug.cfs_rq:/.util_avg.avg
> 301.06 ± 16% +67.7% 504.82 ± 9%
> sched_debug.cfs_rq:/.util_avg.min
> 199.53 ± 5% -29.8% 140.12 ± 9%
> sched_debug.cfs_rq:/.util_avg.stddev
> 334.32 ± 10% +53.2% 512.20 ± 16%
> sched_debug.cfs_rq:/.util_est_enqueued.avg
> 16.06 ± 63% +502.1% 96.68 ± 55%
> sched_debug.cfs_rq:/.util_est_enqueued.min
> 105237 ± 2% +60.0% 168333 ± 7% sched_debug.cpu.clock.avg
> 105780 ± 2% +61.4% 170776 ± 7% sched_debug.cpu.clock.max
> 104562 ± 2% +57.9% 165117 ± 7% sched_debug.cpu.clock.min
> 374.97 ± 58% +328.7% 1607 ± 52% sched_debug.cpu.clock.stddev
> 104364 ± 2% +55.3% 162027 ± 7%
> sched_debug.cpu.clock_task.avg
> 105020 ± 2% +57.9% 165873 ± 6%
> sched_debug.cpu.clock_task.max
> 101770 ± 2% +54.2% 156906 ± 7%
> sched_debug.cpu.clock_task.min
> 519.26 ± 40% +251.6% 1825 ± 32%
> sched_debug.cpu.clock_task.stddev
> 8702 ± 50% +47.5% 12838 ± 11% sched_debug.cpu.curr->pid.min
> 1397213 ± 25% -31.6% 955865 ± 27%
> sched_debug.cpu.max_idle_balance_cost.max
> 0.00 ± 57% +325.8% 0.00 ± 52%
> sched_debug.cpu.next_balance.stddev
> 0.50 ± 33% +351.7% 2.26 ± 53%
> sched_debug.cpu.nr_running.min
> 4.66 ± 13% -50.2% 2.32 ± 26%
> sched_debug.cpu.nr_running.stddev
> 10618467 +116.7% 23010023 ± 10%
> sched_debug.cpu.nr_switches.avg
> 11604438 ± 3% +146.5% 28605638 ± 9%
> sched_debug.cpu.nr_switches.max
> 9614849 ± 2% +69.4% 16290926 ± 11%
> sched_debug.cpu.nr_switches.min
> 409020 ± 26% +482.2% 2381126 ± 14%
> sched_debug.cpu.nr_switches.stddev
> 104527 ± 2% +57.9% 165046 ± 7% sched_debug.cpu_clk
> 103657 ± 2% +58.4% 164178 ± 7% sched_debug.ktime
> 0.00 ±181% +10052.7% 0.32 ±141%
> sched_debug.rt_rq:/.rt_time.avg
> 0.38 ±218% +11898.7% 45.56 ±142%
> sched_debug.rt_rq:/.rt_time.max
> 0.03 ±210% +11503.4% 3.78 ±142%
> sched_debug.rt_rq:/.rt_time.stddev
> 105896 ± 2% +57.2% 166486 ± 7% sched_debug.sched_clk
> 11.37 +9.9% 12.51 perf-stat.i.MPKI
> 4.608e+10 -22.9% 3.553e+10 ± 4%
> perf-stat.i.branch-instructions
> 0.98 +0.2 1.17 perf-stat.i.branch-miss-rate%
> 4.23 ± 4% +13.0 17.25 ± 3% perf-stat.i.cache-miss-rate%
> 94243104 ± 5% +232.8% 3.136e+08 ± 2% perf-stat.i.cache-misses
> 2.441e+09 -14.5% 2.086e+09 ± 5% perf-stat.i.cache-references
> 1.99 +60.7% 3.20 ± 8% perf-stat.i.cpi
> 4.246e+11 +2.6% 4.358e+11 perf-stat.i.cpu-cycles
> 1946034 ± 3% +31.7% 2562014 ± 3% perf-stat.i.cpu-migrations
> 4979 ± 4% -71.5% 1419 ± 3%
> perf-stat.i.cycles-between-cache-misses
> 6.662e+10 -23.5% 5.1e+10 ± 5% perf-stat.i.dTLB-loads
> 187259 ± 10% +69.8% 318016 ± 9% perf-stat.i.dTLB-store-misses
> 3.956e+10 -22.8% 3.055e+10 ± 5% perf-stat.i.dTLB-stores
> 1.177e+08 ± 6% -35.3% 76112476 ± 6% perf-stat.i.iTLB-load-misses
> 2.256e+11 -22.8% 1.742e+11 ± 5% perf-stat.i.instructions
> 1992 ± 5% +20.2% 2394 ± 2%
> perf-stat.i.instructions-per-iTLB-miss
> 0.53 -23.9% 0.41 ± 6% perf-stat.i.ipc
> 2.95 +2.7% 3.02 perf-stat.i.metric.GHz
> 490.25 ± 5% +131.1% 1133 ± 6% perf-stat.i.metric.K/sec
> 1073 -22.9% 827.94 ± 5% perf-stat.i.metric.M/sec
> 6951 ± 4% -13.4% 6017 ± 6% perf-stat.i.minor-faults
> 87.95 +6.7 94.67
> perf-stat.i.node-load-miss-rate%
> 23701486 ± 11% +465.2% 1.34e+08 ± 3% perf-stat.i.node-load-misses
> 2999385 ± 8% +144.4% 7330698 ± 2% perf-stat.i.node-loads
> 69.45 ± 2% +28.6 98.01
> perf-stat.i.node-store-miss-rate%
> 10499384 ± 8% +314.7% 43541240 ± 3% perf-stat.i.node-store-misses
> 4750209 ± 4% -82.2% 845534 ± 29% perf-stat.i.node-stores
> 6960 ± 4% -13.4% 6027 ± 6% perf-stat.i.page-faults
> 10.79 +10.8% 11.96 perf-stat.overall.MPKI
> 0.94 +0.2 1.13
> perf-stat.overall.branch-miss-rate%
> 3.87 ± 6% +11.2 15.04 ± 3%
> perf-stat.overall.cache-miss-rate%
> 1.87 +33.4% 2.50 ± 5% perf-stat.overall.cpi
> 4497 ± 5% -69.1% 1389 ± 3%
> perf-stat.overall.cycles-between-cache-misses
> 0.01 ± 2% +0.0 0.01 ± 10%
> perf-stat.overall.dTLB-load-miss-rate%
> 0.00 ± 10% +0.0 0.00 ± 8%
> perf-stat.overall.dTLB-store-miss-rate%
> 1923 ± 6% +18.9% 2286 ± 2%
> perf-stat.overall.instructions-per-iTLB-miss
> 0.53 -24.8% 0.40 ± 6% perf-stat.overall.ipc
> 88.60 +6.2 94.80
> perf-stat.overall.node-load-miss-rate%
> 68.41 ± 2% +29.6 98.04
> perf-stat.overall.node-store-miss-rate%
> 4.584e+10 -22.7% 3.545e+10 ± 4%
> perf-stat.ps.branch-instructions
> 93789280 ± 5% +232.8% 3.122e+08 ± 2% perf-stat.ps.cache-misses
> 2.422e+09 -14.2% 2.078e+09 ± 5% perf-stat.ps.cache-references
> 4.205e+11 +3.0% 4.332e+11 perf-stat.ps.cpu-cycles
> 1916167 ± 2% +32.3% 2534886 ± 3% perf-stat.ps.cpu-migrations
> 6.634e+10 -23.3% 5.091e+10 ± 5% perf-stat.ps.dTLB-loads
> 185792 ± 10% +70.4% 316635 ± 9%
> perf-stat.ps.dTLB-store-misses
> 3.939e+10 -22.6% 3.05e+10 ± 5% perf-stat.ps.dTLB-stores
> 1.171e+08 ± 6% -35.0% 76093293 ± 6% perf-stat.ps.iTLB-load-misses
> 2.245e+11 -22.6% 1.738e+11 ± 5% perf-stat.ps.instructions
> 6810 ± 3% -12.6% 5951 ± 6% perf-stat.ps.minor-faults
> 23430403 ± 10% +468.8% 1.333e+08 ± 3% perf-stat.ps.node-load-misses
> 3007245 ± 8% +142.9% 7304955 perf-stat.ps.node-loads
> 10398685 ± 7% +316.5% 43306438 ± 3%
> perf-stat.ps.node-store-misses
> 4785933 ± 4% -81.8% 871562 ± 28% perf-stat.ps.node-stores
> 6818 ± 3% -12.6% 5961 ± 6% perf-stat.ps.page-faults
> 3.473e+13 +38.3% 4.803e+13 ± 6% perf-stat.total.instructions
> 42.84 ± 43% -32.5 10.29 ±128%
> perf-profile.calltrace.cycles-pp.__get_user_nocheck_8.perf_callchain_user.get_perf_callchain.perf_callchain.perf_prepare_sample
> 41.85 ± 43% -31.8 10.04 ±128%
> perf-profile.calltrace.cycles-pp.perf_callchain.perf_prepare_sample.perf_event_output_forward.__perf_event_overflow.perf_tp_event
> 41.79 ± 43% -31.8 10.02 ±128%
> perf-profile.calltrace.cycles-pp.get_perf_callchain.perf_callchain.perf_prepare_sample.perf_event_output_forward.__perf_event_overflow
> 30.90 ± 43% -23.5 7.40 ±127%
> perf-profile.calltrace.cycles-pp.perf_callchain_user.get_perf_callchain.perf_callchain.perf_prepare_sample.perf_event_output_forward
> 18.12 ± 43% -14.0 4.11 ±127%
> perf-profile.calltrace.cycles-pp.perf_event_output_forward.__perf_event_overflow.perf_tp_event.perf_trace_sched_stat_runtime.update_curr
> 17.93 ± 43% -13.9 4.07 ±127%
> perf-profile.calltrace.cycles-pp.perf_prepare_sample.perf_event_output_forward.__perf_event_overflow.perf_tp_event.perf_trace_sched_stat_runtime
> 14.00 ± 54% -11.4 2.62 ±152%
> perf-profile.calltrace.cycles-pp.asm_exc_page_fault.__get_user_nocheck_8.perf_callchain_user.get_perf_callchain.perf_callchain
> 31.01 ± 9% -10.5 20.50 ± 24%
> perf-profile.calltrace.cycles-pp.__schedule.schedule.pipe_read.new_sync_read.vfs_read
> 31.10 ± 9% -10.4 20.69 ± 23%
> perf-profile.calltrace.cycles-pp.schedule.pipe_read.new_sync_read.vfs_read.ksys_read
> 13.76 ± 44% -10.3 3.43 ±125%
> perf-profile.calltrace.cycles-pp.__perf_event_overflow.perf_tp_event.perf_trace_sched_switch.__schedule.schedule
> 13.73 ± 44% -10.3 3.42 ±125%
> perf-profile.calltrace.cycles-pp.perf_event_output_forward.__perf_event_overflow.perf_tp_event.perf_trace_sched_switch.__schedule
> 41.24 ± 4% -10.1 31.11 ± 11%
> perf-profile.calltrace.cycles-pp.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock.pipe_write
> 13.51 ± 44% -10.1 3.39 ±125%
> perf-profile.calltrace.cycles-pp.perf_prepare_sample.perf_event_output_forward.__perf_event_overflow.perf_tp_event.perf_trace_sched_switch
> 41.49 ± 4% -9.7 31.83 ± 10%
> perf-profile.calltrace.cycles-pp.autoremove_wake_function.__wake_up_common.__wake_up_common_lock.pipe_write.new_sync_write
> 41.71 ± 4% -9.1 32.56 ± 10%
> perf-profile.calltrace.cycles-pp.__wake_up_common.__wake_up_common_lock.pipe_write.new_sync_write.vfs_write
> 17.44 ± 5% -8.2 9.20 ± 23%
> perf-profile.calltrace.cycles-pp.enqueue_task_fair.ttwu_do_activate.try_to_wake_up.autoremove_wake_function.__wake_up_common
> 10.14 ± 44% -8.2 1.98 ±151%
> perf-profile.calltrace.cycles-pp.perf_callchain_kernel.get_perf_callchain.perf_callchain.perf_prepare_sample.perf_event_output_forward
> 17.53 ± 5% -8.1 9.42 ± 22%
> perf-profile.calltrace.cycles-pp.ttwu_do_activate.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock
> 42.61 ± 4% -8.0 34.58 ± 10%
> perf-profile.calltrace.cycles-pp.__wake_up_common_lock.pipe_write.new_sync_write.vfs_write.ksys_write
> 9.46 ± 43% -7.5 1.97 ±127%
> perf-profile.calltrace.cycles-pp.perf_trace_sched_stat_runtime.update_curr.enqueue_entity.enqueue_task_fair.ttwu_do_activate
> 9.20 ± 47% -7.4 1.83 ±149%
> perf-profile.calltrace.cycles-pp.exc_page_fault.asm_exc_page_fault.__get_user_nocheck_8.perf_callchain_user.get_perf_callchain
> 9.20 ± 43% -7.3 1.88 ±129%
> perf-profile.calltrace.cycles-pp.perf_tp_event.perf_trace_sched_stat_runtime.update_curr.enqueue_entity.enqueue_task_fair
> 9.11 ± 43% -7.2 1.86 ±129%
> perf-profile.calltrace.cycles-pp.__perf_event_overflow.perf_tp_event.perf_trace_sched_stat_runtime.update_curr.enqueue_entity
> 9.99 ± 40% -7.2 2.81 ± 71%
> perf-profile.calltrace.cycles-pp.update_curr.enqueue_entity.enqueue_task_fair.ttwu_do_activate.try_to_wake_up
> 9.27 ± 43% -7.0 2.28 ±128%
> perf-profile.calltrace.cycles-pp.__perf_event_overflow.perf_tp_event.perf_trace_sched_wakeup_template.try_to_wake_up.autoremove_wake_function
> 9.25 ± 43% -7.0 2.28 ±128%
> perf-profile.calltrace.cycles-pp.perf_event_output_forward.__perf_event_overflow.perf_tp_event.perf_trace_sched_wakeup_template.try_to_wake_up
> 9.28 ± 43% -6.9 2.36 ±124%
> perf-profile.calltrace.cycles-pp.perf_trace_sched_stat_runtime.update_curr.dequeue_entity.dequeue_task_fair.__schedule
> 9.16 ± 43% -6.9 2.26 ±128%
> perf-profile.calltrace.cycles-pp.perf_prepare_sample.perf_event_output_forward.__perf_event_overflow.perf_tp_event.perf_trace_sched_wakeup_template
> 9.15 ± 43% -6.9 2.29 ±125%
> perf-profile.calltrace.cycles-pp.perf_tp_event.perf_trace_sched_stat_runtime.update_curr.dequeue_entity.dequeue_task_fair
> 9.04 ± 43% -6.8 2.26 ±125%
> perf-profile.calltrace.cycles-pp.__perf_event_overflow.perf_tp_event.perf_trace_sched_stat_runtime.update_curr.dequeue_entity
> 11.81 ± 27% -6.7 5.15 ± 30%
> perf-profile.calltrace.cycles-pp.enqueue_entity.enqueue_task_fair.ttwu_do_activate.try_to_wake_up.autoremove_wake_function
> 16.02 ± 4% -6.6 9.38 ± 33%
> perf-profile.calltrace.cycles-pp.dequeue_task_fair.__schedule.schedule.pipe_read.new_sync_read
> 8.83 ± 43% -6.6 2.26 ±124%
> perf-profile.calltrace.cycles-pp.perf_trace_sched_switch.__schedule.schedule.pipe_read.new_sync_read
> 8.66 ± 43% -6.5 2.18 ±125%
> perf-profile.calltrace.cycles-pp.perf_tp_event.perf_trace_sched_switch.__schedule.schedule.pipe_read
> 9.73 ± 39% -6.5 3.25 ± 83%
> perf-profile.calltrace.cycles-pp.update_curr.dequeue_entity.dequeue_task_fair.__schedule.schedule
> 9.59 ± 42% -6.5 3.12 ± 90%
> perf-profile.calltrace.cycles-pp.perf_tp_event.perf_trace_sched_wakeup_template.try_to_wake_up.autoremove_wake_function.__wake_up_common
> 10.53 ± 33% -5.7 4.78 ± 49%
> perf-profile.calltrace.cycles-pp.dequeue_entity.dequeue_task_fair.__schedule.schedule.pipe_read
> 9.88 ± 39% -5.7 4.15 ± 63%
> perf-profile.calltrace.cycles-pp.perf_trace_sched_wakeup_template.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock
> 35.84 ± 4% -4.5 31.34 ± 8%
> perf-profile.calltrace.cycles-pp.pipe_read.new_sync_read.vfs_read.ksys_read.do_syscall_64
> 36.07 ± 4% -4.3 31.80 ± 7%
> perf-profile.calltrace.cycles-pp.new_sync_read.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 5.36 ± 45% -4.0 1.36 ±123%
> perf-profile.calltrace.cycles-pp.perf_trace_sched_switch.__schedule.schedule.exit_to_user_mode_loop.exit_to_user_mode_prepare
> 5.24 ± 46% -3.9 1.29 ±125%
> perf-profile.calltrace.cycles-pp.perf_tp_event.perf_trace_sched_switch.__schedule.schedule.exit_to_user_mode_loop
> 6.10 ± 7% -3.8 2.34 ± 37%
> perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.try_to_wake_up.autoremove_wake_function.__wake_up_common
> 36.68 ± 3% -3.6 33.04 ± 6%
> perf-profile.calltrace.cycles-pp.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_read
> 3.86 ± 62% -3.3 0.58 ±223%
> perf-profile.calltrace.cycles-pp.__unwind_start.perf_callchain_kernel.get_perf_callchain.perf_callchain.perf_prepare_sample
> 6.36 ± 7% -3.1 3.22 ± 18%
> perf-profile.calltrace.cycles-pp._raw_spin_lock.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock
> 37.32 ± 2% -2.7 34.64 ± 5%
> perf-profile.calltrace.cycles-pp.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_read.start_thread
> 8.10 ± 26% -2.4 5.66 ± 21%
> perf-profile.calltrace.cycles-pp.__schedule.schedule.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode
> 8.15 ± 26% -2.4 5.76 ± 20%
> perf-profile.calltrace.cycles-pp.schedule.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64
> 8.22 ± 25% -2.3 5.91 ± 19%
> perf-profile.calltrace.cycles-pp.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 3.16 ± 7% -2.0 1.19 ± 33%
> perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.__schedule.schedule.pipe_read
> 38.53 ± 2% -2.0 36.57 ± 4%
> perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_read.start_thread
> 38.68 -1.8 36.84 ± 4%
> perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__libc_read.start_thread
> 3.32 ± 6% -1.7 1.63 ± 19%
> perf-profile.calltrace.cycles-pp._raw_spin_lock.__schedule.schedule.pipe_read.new_sync_read
> 1.04 ± 7% -0.6 0.41 ± 72%
> perf-profile.calltrace.cycles-pp._raw_spin_lock.__schedule.schedule.exit_to_user_mode_loop.exit_to_user_mode_prepare
> 0.32 ±102% +0.8 1.08 ± 23%
> perf-profile.calltrace.cycles-pp.__pthread_disable_asynccancel.start_thread
> 0.64 ± 10% +0.8 1.44 ± 21%
> perf-profile.calltrace.cycles-pp._raw_spin_unlock_irqrestore.__wake_up_common_lock.pipe_write.new_sync_write.vfs_write
> 0.00 +0.8 0.81 ± 33%
> perf-profile.calltrace.cycles-pp.sched_ttwu_pending.__sysvec_call_function_single.sysvec_call_function_single.asm_sysvec_call_function_single._raw_spin_unlock_irqrestore
> 0.90 ± 48% +0.9 1.78 ± 26%
> perf-profile.calltrace.cycles-pp.copy_page_to_iter.pipe_read.new_sync_read.vfs_read.ksys_read
> 0.00 +0.9 0.94 ± 22%
> perf-profile.calltrace.cycles-pp.file_update_time.pipe_write.new_sync_write.vfs_write.ksys_write
> 0.00 +0.9 0.94 ± 27%
> perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock
> 0.00 +1.0 0.98 ± 29%
> perf-profile.calltrace.cycles-pp.__sysvec_call_function_single.sysvec_call_function_single.asm_sysvec_call_function_single._raw_spin_unlock_irqrestore.__wake_up_common_lock
> 0.00 +1.0 1.00 ± 28%
> perf-profile.calltrace.cycles-pp.sysvec_call_function_single.asm_sysvec_call_function_single._raw_spin_unlock_irqrestore.__wake_up_common_lock.pipe_write
> 0.12 ±223% +1.0 1.15 ± 27%
> perf-profile.calltrace.cycles-pp.task_h_load.wake_affine.select_task_rq_fair.select_task_rq.try_to_wake_up
> 0.09 ±223% +1.1 1.14 ± 29%
> perf-profile.calltrace.cycles-pp.prepare_task_switch.__schedule.schedule.pipe_read.new_sync_read
> 0.00 +1.1 1.09 ± 24%
> perf-profile.calltrace.cycles-pp.copy_user_enhanced_fast_string._copy_to_iter.copy_page_to_iter.pipe_read.new_sync_read
> 0.23 ±146% +1.1 1.33 ± 18%
> perf-profile.calltrace.cycles-pp.mutex_unlock.pipe_write.new_sync_write.vfs_write.ksys_write
> 0.47 ± 45% +1.1 1.57 ± 17%
> perf-profile.calltrace.cycles-pp.finish_task_switch.__schedule.schedule.pipe_read.new_sync_read
> 0.00 +1.1 1.11 ± 26%
> perf-profile.calltrace.cycles-pp.asm_sysvec_call_function_single._raw_spin_unlock_irqrestore.__wake_up_common_lock.pipe_write.new_sync_write
> 0.00 +1.1 1.13 ± 46%
> perf-profile.calltrace.cycles-pp.sched_ttwu_pending.__sysvec_call_function_single.sysvec_call_function_single.asm_sysvec_call_function_single.finish_task_switch
> 0.00 +1.2 1.20 ± 24%
> perf-profile.calltrace.cycles-pp.ttwu_queue_wakelist.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock
> 0.00 +1.3 1.32 ± 40%
> perf-profile.calltrace.cycles-pp.__sysvec_call_function_single.sysvec_call_function_single.asm_sysvec_call_function_single.finish_task_switch.__schedule
> 0.00 +1.3 1.34 ± 40%
> perf-profile.calltrace.cycles-pp.sysvec_call_function_single.asm_sysvec_call_function_single.finish_task_switch.__schedule.schedule
> 0.18 ±141% +1.3 1.53 ± 28%
> perf-profile.calltrace.cycles-pp.available_idle_cpu.select_idle_cpu.select_idle_sibling.select_task_rq_fair.select_task_rq
> 0.00 +1.4 1.36 ± 18%
> perf-profile.calltrace.cycles-pp.asm_sysvec_call_function_single.finish_task_switch.__schedule.schedule.pipe_read
> 0.33 ±100% +1.4 1.70 ± 35%
> perf-profile.calltrace.cycles-pp.switch_fpu_return.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 0.44 ±104% +1.4 1.82 ± 23%
> perf-profile.calltrace.cycles-pp.__fget_files.__fdget_pos.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 0.00 +1.4 1.40 ± 25%
> perf-profile.calltrace.cycles-pp.copy_user_enhanced_fast_string.copyin._copy_from_iter.pipe_write.new_sync_write
> 0.58 ± 80% +1.4 1.99 ± 22%
> perf-profile.calltrace.cycles-pp.__fdget_pos.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_write
> 0.18 ±141% +1.5 1.64 ± 28%
> perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.prepare_to_wait_event.pipe_read.new_sync_read.vfs_read
> 0.37 ±103% +1.5 1.85 ± 27%
> perf-profile.calltrace.cycles-pp.wake_affine.select_task_rq_fair.select_task_rq.try_to_wake_up.autoremove_wake_function
> 0.00 +1.5 1.49 ± 25%
> perf-profile.calltrace.cycles-pp.copyin._copy_from_iter.pipe_write.new_sync_write.vfs_write
> 0.00 +1.6 1.56 ± 27%
> perf-profile.calltrace.cycles-pp._copy_to_iter.copy_page_to_iter.pipe_read.new_sync_read.vfs_read
> 0.60 ± 81% +1.7 2.27 ± 22%
> perf-profile.calltrace.cycles-pp.mutex_lock.pipe_write.new_sync_write.vfs_write.ksys_write
> 1.03 ± 33% +2.2 3.26 ± 29%
> perf-profile.calltrace.cycles-pp.select_idle_cpu.select_idle_sibling.select_task_rq_fair.select_task_rq.try_to_wake_up
> 0.56 ± 74% +2.6 3.11 ± 28%
> perf-profile.calltrace.cycles-pp.prepare_to_wait_event.pipe_read.new_sync_read.vfs_read.ksys_read
> 0.00 +3.0 2.99 ± 28%
> perf-profile.calltrace.cycles-pp._copy_from_iter.pipe_write.new_sync_write.vfs_write.ksys_write
> 1.65 ± 32% +3.8 5.43 ± 28%
> perf-profile.calltrace.cycles-pp.select_idle_sibling.select_task_rq_fair.select_task_rq.try_to_wake_up.autoremove_wake_function
> 2.36 ± 33% +5.3 7.61 ± 26%
> perf-profile.calltrace.cycles-pp.select_task_rq_fair.select_task_rq.try_to_wake_up.autoremove_wake_function.__wake_up_common
> 2.47 ± 33% +5.5 7.97 ± 26%
> perf-profile.calltrace.cycles-pp.select_task_rq.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock
> 45.25 ± 42% -34.3 10.95 ±126%
> perf-profile.children.cycles-pp.__perf_event_overflow
> 45.18 ± 42% -34.3 10.93 ±126%
> perf-profile.children.cycles-pp.perf_event_output_forward
> 45.97 ± 42% -34.1 11.91 ±116%
> perf-profile.children.cycles-pp.perf_tp_event
> 44.74 ± 42% -33.9 10.82 ±126%
> perf-profile.children.cycles-pp.perf_prepare_sample
> 44.00 ± 42% -33.4 10.64 ±126%
> perf-profile.children.cycles-pp.perf_callchain
> 43.94 ± 42% -33.3 10.63 ±126%
> perf-profile.children.cycles-pp.get_perf_callchain
> 32.59 ± 43% -24.7 7.89 ±126%
> perf-profile.children.cycles-pp.perf_callchain_user
> 32.34 ± 43% -24.5 7.83 ±126%
> perf-profile.children.cycles-pp.__get_user_nocheck_8
> 19.92 ± 42% -14.9 5.05 ±114%
> perf-profile.children.cycles-pp.perf_trace_sched_stat_runtime
> 40.50 ± 12% -13.6 26.91 ± 22%
> perf-profile.children.cycles-pp.__schedule
> 40.47 ± 12% -13.4 27.04 ± 22%
> perf-profile.children.cycles-pp.schedule
> 21.52 ± 36% -13.4 8.17 ± 62%
> perf-profile.children.cycles-pp.update_curr
> 17.49 ± 41% -12.9 4.64 ±114%
> perf-profile.children.cycles-pp.native_irq_return_iret
> 14.83 ± 43% -11.0 3.81 ±117%
> perf-profile.children.cycles-pp.perf_trace_sched_switch
> 42.34 ± 4% -10.7 31.63 ± 10%
> perf-profile.children.cycles-pp.try_to_wake_up
> 42.51 ± 4% -10.2 32.34 ± 10%
> perf-profile.children.cycles-pp.autoremove_wake_function
> 13.06 ± 45% -9.9 3.12 ±128%
> perf-profile.children.cycles-pp.asm_exc_page_fault
> 42.72 ± 4% -9.6 33.08 ± 9%
> perf-profile.children.cycles-pp.__wake_up_common
> 43.67 ± 4% -8.5 35.17 ± 9%
> perf-profile.children.cycles-pp.__wake_up_common_lock
> 10.98 ± 42% -8.3 2.64 ±125%
> perf-profile.children.cycles-pp.perf_callchain_kernel
> 9.78 ± 45% -7.4 2.34 ±128%
> perf-profile.children.cycles-pp.exc_page_fault
> 16.53 ± 4% -6.9 9.58 ± 33%
> perf-profile.children.cycles-pp.dequeue_task_fair
> 18.15 ± 5% -6.5 11.66 ± 24%
> perf-profile.children.cycles-pp.enqueue_task_fair
> 10.64 ± 6% -6.5 4.14 ± 36%
> perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
> 18.24 ± 5% -6.3 11.90 ± 23%
> perf-profile.children.cycles-pp.ttwu_do_activate
> 8.29 ± 42% -6.3 1.96 ±125%
> perf-profile.children.cycles-pp.unwind_next_frame
> 10.93 ± 33% -6.0 4.88 ± 48%
> perf-profile.children.cycles-pp.dequeue_entity
> 10.16 ± 38% -5.9 4.22 ± 62%
> perf-profile.children.cycles-pp.perf_trace_sched_wakeup_template
> 12.40 ± 25% -5.9 6.53 ± 31%
> perf-profile.children.cycles-pp.enqueue_entity
> 11.22 ± 7% -4.8 6.45 ± 13%
> perf-profile.children.cycles-pp._raw_spin_lock
> 35.89 ± 4% -4.4 31.45 ± 8%
> perf-profile.children.cycles-pp.pipe_read
> 36.10 ± 4% -4.3 31.85 ± 7%
> perf-profile.children.cycles-pp.new_sync_read
> 95.76 ± 2% -3.8 91.97 ± 2%
> perf-profile.children.cycles-pp.do_syscall_64
> 4.85 ± 42% -3.7 1.16 ±125%
> perf-profile.children.cycles-pp.__unwind_start
> 96.04 -3.6 92.44 ± 2%
> perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
> 36.72 ± 3% -3.6 33.13 ± 6%
> perf-profile.children.cycles-pp.vfs_read
> 37.36 ± 2% -2.6 34.71 ± 5%
> perf-profile.children.cycles-pp.ksys_read
> 8.57 ± 23% -2.3 6.24 ± 18%
> perf-profile.children.cycles-pp.exit_to_user_mode_loop
> 2.24 ± 42% -1.7 0.53 ±126%
> perf-profile.children.cycles-pp.__orc_find
> 2.02 ± 41% -1.4 0.58 ±132%
> perf-profile.children.cycles-pp.perf_trace_sched_migrate_task
> 1.45 ± 44% -1.1 0.34 ±127%
> perf-profile.children.cycles-pp.bad_get_user
> 1.28 ± 42% -1.0 0.32 ±125%
> perf-profile.children.cycles-pp.unwind_get_return_address
> 1.25 ± 41% -0.9 0.30 ±124%
> perf-profile.children.cycles-pp.orc_find
> 0.97 ± 42% -0.9 0.05 ± 45%
> perf-profile.children.cycles-pp.copy_page_from_iter
> 1.19 ± 42% -0.9 0.28 ±125%
> perf-profile.children.cycles-pp.stack_access_ok
> 1.07 ± 42% -0.8 0.26 ±126%
> perf-profile.children.cycles-pp.__kernel_text_address
> 0.85 ± 42% -0.6 0.21 ±125%
> perf-profile.children.cycles-pp.kernel_text_address
> 0.80 ± 41% -0.6 0.19 ±124%
> perf-profile.children.cycles-pp.kernelmode_fixup_or_oops
> 0.71 ± 40% -0.5 0.18 ±123%
> perf-profile.children.cycles-pp.fixup_exception
> 0.60 ± 40% -0.5 0.15 ±124%
> perf-profile.children.cycles-pp.search_exception_tables
> 0.58 ± 40% -0.4 0.14 ±123%
> perf-profile.children.cycles-pp.search_extable
> 0.56 ± 40% -0.4 0.14 ±124%
> perf-profile.children.cycles-pp.bsearch
> 0.45 ± 40% -0.3 0.11 ±124%
> perf-profile.children.cycles-pp.__perf_event_header__init_id
> 0.51 ± 19% -0.3 0.24 ± 42%
> perf-profile.children.cycles-pp.scheduler_tick
> 0.35 ± 37% -0.3 0.09 ±121%
> perf-profile.children.cycles-pp.cmp_ex_search
> 0.54 ± 17% -0.3 0.28 ± 32%
> perf-profile.children.cycles-pp.update_process_times
> 0.33 ± 43% -0.3 0.08 ±125%
> perf-profile.children.cycles-pp.core_kernel_text
> 0.54 ± 17% -0.2 0.29 ± 31%
> perf-profile.children.cycles-pp.tick_sched_handle
> 0.44 ± 20% -0.2 0.19 ± 53%
> perf-profile.children.cycles-pp.task_tick_fair
> 0.59 ± 15% -0.2 0.35 ± 24%
> perf-profile.children.cycles-pp.__hrtimer_run_queues
> 0.55 ± 16% -0.2 0.32 ± 26%
> perf-profile.children.cycles-pp.tick_sched_timer
> 0.26 ± 41% -0.2 0.06 ±127%
> perf-profile.children.cycles-pp.perf_output_begin_forward
> 0.24 ± 41% -0.2 0.06 ±125%
> perf-profile.children.cycles-pp.ftrace_graph_ret_addr
> 0.70 ± 12% -0.2 0.54 ± 10%
> perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt
> 0.70 ± 12% -0.2 0.54 ± 10%
> perf-profile.children.cycles-pp.hrtimer_interrupt
> 0.75 ± 11% -0.2 0.60 ± 9%
> perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt
> 0.21 ± 41% -0.2 0.06 ±121%
> perf-profile.children.cycles-pp.__task_pid_nr_ns
> 0.15 ± 62% -0.1 0.04 ± 72%
> perf-profile.children.cycles-pp.__cmd_record
> 0.13 ± 14% -0.0 0.10 ± 14%
> perf-profile.children.cycles-pp.perf_trace_buf_alloc
> 0.06 ± 9% +0.0 0.09 ± 11%
> perf-profile.children.cycles-pp.__irq_exit_rcu
> 0.04 ± 75% +0.1 0.09 ± 22%
> perf-profile.children.cycles-pp.syscall_exit_to_user_mode_prepare
> 0.07 ± 24% +0.1 0.16 ± 21%
> perf-profile.children.cycles-pp.anon_pipe_buf_release
> 0.00 +0.1 0.11 ± 29%
> perf-profile.children.cycles-pp.__mnt_want_write
> 0.06 ± 9% +0.1 0.18 ± 24%
> perf-profile.children.cycles-pp.generic_update_time
> 0.01 ±223% +0.1 0.16 ± 49%
> perf-profile.children.cycles-pp.mutex_spin_on_owner
> 0.00 +0.2 0.18 ± 25%
> perf-profile.children.cycles-pp.place_entity
> 0.06 ± 75% +0.2 0.25 ± 46%
> perf-profile.children.cycles-pp.remove_entity_load_avg
> 0.19 ± 38% +0.2 0.41 ± 20%
> perf-profile.children.cycles-pp.aa_file_perm
> 0.09 ± 4% +0.2 0.32 ± 23%
> perf-profile.children.cycles-pp.__mark_inode_dirty
> 0.23 ± 42% +0.3 0.48 ± 23%
> perf-profile.children.cycles-pp.atime_needs_update
> 0.02 ± 99% +0.3 0.30 ± 22%
> perf-profile.children.cycles-pp.llist_reverse_order
> 0.17 ± 40% +0.4 0.58 ± 42%
> perf-profile.children.cycles-pp.migrate_task_rq_fair
> 0.40 ± 34% +0.4 0.82 ± 20%
> perf-profile.children.cycles-pp.touch_atime
> 0.32 ± 24% +0.6 0.87 ± 20%
> perf-profile.children.cycles-pp.__list_del_entry_valid
> 0.55 ± 43% +0.6 1.14 ± 24%
> perf-profile.children.cycles-pp.apparmor_file_permission
> 0.12 ± 15% +0.6 0.74 ± 20%
> perf-profile.children.cycles-pp.__flush_smp_call_function_queue
> 0.62 ± 44% +0.6 1.24 ± 25%
> perf-profile.children.cycles-pp.security_file_permission
> 0.45 ± 43% +0.6 1.08 ± 23%
> perf-profile.children.cycles-pp.__pthread_disable_asynccancel
> 0.32 ± 29% +0.6 0.95 ± 22%
> perf-profile.children.cycles-pp.file_update_time
> 0.48 ± 26% +0.6 1.13 ± 23%
> perf-profile.children.cycles-pp.__update_load_avg_se
> 0.54 ± 31% +0.7 1.20 ± 22%
> perf-profile.children.cycles-pp.__update_load_avg_cfs_rq
> 0.49 ± 31% +0.7 1.16 ± 27%
> perf-profile.children.cycles-pp.restore_fpregs_from_fpstate
> 0.34 ± 46% +0.7 1.04 ± 29%
> perf-profile.children.cycles-pp.fput
> 0.00 +0.8 0.77 ± 29%
> perf-profile.children.cycles-pp.__smp_call_single_queue
> 0.02 ± 99% +0.8 0.80 ± 29%
> perf-profile.children.cycles-pp.llist_add_batch
> 0.37 ± 49% +0.8 1.15 ± 27%
> perf-profile.children.cycles-pp.task_h_load
> 0.24 ± 37% +0.8 1.07 ± 31%
> perf-profile.children.cycles-pp._raw_spin_lock_irq
> 0.92 ± 47% +0.9 1.80 ± 26%
> perf-profile.children.cycles-pp.copy_page_to_iter
> 0.59 ± 33% +1.0 1.59 ± 28%
> perf-profile.children.cycles-pp.__switch_to_asm
> 0.74 ± 34% +1.1 1.82 ± 27%
> perf-profile.children.cycles-pp.switch_fpu_return
> 0.09 ± 31% +1.1 1.21 ± 24%
> perf-profile.children.cycles-pp.ttwu_queue_wakelist
> 0.38 ± 48% +1.1 1.51 ± 25%
> perf-profile.children.cycles-pp.copyin
> 0.63 ± 50% +1.3 1.90 ± 20%
> perf-profile.children.cycles-pp.mutex_unlock
> 0.62 ± 43% +1.3 1.90 ± 29%
> perf-profile.children.cycles-pp.prepare_task_switch
> 0.87 ± 5% +1.3 2.18 ± 11%
> perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore
> 0.54 ± 43% +1.3 1.85 ± 27%
> perf-profile.children.cycles-pp.wake_affine
> 0.86 ± 44% +1.4 2.22 ± 22%
> perf-profile.children.cycles-pp.__fget_files
> 1.06 ± 42% +1.6 2.64 ± 21%
> perf-profile.children.cycles-pp.__fdget_pos
> 0.00 +1.6 1.59 ± 27%
> perf-profile.children.cycles-pp._copy_to_iter
> 0.91 ± 9% +1.6 2.51 ± 16%
> perf-profile.children.cycles-pp.finish_task_switch
> 0.87 ± 45% +1.8 2.62 ± 23%
> perf-profile.children.cycles-pp.copy_user_enhanced_fast_string
> 1.18 ± 43% +2.1 3.24 ± 23%
> perf-profile.children.cycles-pp.mutex_lock
> 0.71 ± 29% +2.1 2.85 ± 27%
> perf-profile.children.cycles-pp.available_idle_cpu
> 1.08 ± 33% +2.3 3.39 ± 28%
> perf-profile.children.cycles-pp.select_idle_cpu
> 0.90 ± 33% +2.3 3.24 ± 27%
> perf-profile.children.cycles-pp._raw_spin_lock_irqsave
> 0.73 ± 33% +2.4 3.15 ± 28%
> perf-profile.children.cycles-pp.prepare_to_wait_event
> 0.56 ± 22% +2.8 3.41 ± 16%
> perf-profile.children.cycles-pp.sched_ttwu_pending
> 0.00 +3.0 3.01 ± 28%
> perf-profile.children.cycles-pp._copy_from_iter
> 0.58 ± 22% +3.4 3.97 ± 12%
> perf-profile.children.cycles-pp.__sysvec_call_function_single
> 0.58 ± 22% +3.4 4.03 ± 12%
> perf-profile.children.cycles-pp.sysvec_call_function_single
> 1.71 ± 32% +3.9 5.58 ± 28%
> perf-profile.children.cycles-pp.select_idle_sibling
> 0.62 ± 22% +3.9 4.52 ± 10%
> perf-profile.children.cycles-pp.asm_sysvec_call_function_single
> 2.42 ± 33% +5.3 7.75 ± 26%
> perf-profile.children.cycles-pp.select_task_rq_fair
> 2.53 ± 33% +5.6 8.12 ± 26%
> perf-profile.children.cycles-pp.select_task_rq
> 17.49 ± 41% -12.9 4.64 ±114%
> perf-profile.self.cycles-pp.native_irq_return_iret
> 8.85 ± 46% -6.8 2.08 ±130%
> perf-profile.self.cycles-pp.exc_page_fault
> 10.63 ± 6% -6.5 4.14 ± 36%
> perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
> 4.76 ± 43% -3.6 1.12 ±126%
> perf-profile.self.cycles-pp.__get_user_nocheck_8
> 3.48 ± 42% -2.7 0.83 ±125%
> perf-profile.self.cycles-pp.unwind_next_frame
> 2.23 ± 42% -1.7 0.53 ±126%
> perf-profile.self.cycles-pp.__orc_find
> 1.20 ± 41% -0.9 0.29 ±124%
> perf-profile.self.cycles-pp.orc_find
> 1.08 ± 42% -0.8 0.25 ±124%
> perf-profile.self.cycles-pp.stack_access_ok
> 0.91 ± 42% -0.7 0.24 ±126%
> perf-profile.self.cycles-pp.perf_callchain_kernel
> 0.46 ± 42% -0.3 0.12 ±124%
> perf-profile.self.cycles-pp.__unwind_start
> 0.36 ± 41% -0.3 0.09 ±126%
> perf-profile.self.cycles-pp.kernel_text_address
> 0.34 ± 38% -0.3 0.08 ±124%
> perf-profile.self.cycles-pp.cmp_ex_search
> 0.30 ± 44% -0.2 0.07 ±127%
> perf-profile.self.cycles-pp.asm_exc_page_fault
> 0.26 ± 42% -0.2 0.07 ±127%
> perf-profile.self.cycles-pp.get_perf_callchain
> 0.24 ± 41% -0.2 0.06 ±127%
> perf-profile.self.cycles-pp.perf_output_begin_forward
> 0.21 ± 40% -0.2 0.06 ±121%
> perf-profile.self.cycles-pp.__task_pid_nr_ns
> 0.15 ± 46% -0.1 0.04 ± 45%
> perf-profile.self.cycles-pp.copy_page_from_iter
> 0.00 +0.1 0.11 ± 27%
> perf-profile.self.cycles-pp.__mnt_want_write
> 0.01 ±223% +0.1 0.15 ± 51%
> perf-profile.self.cycles-pp.mutex_spin_on_owner
> 0.08 ± 26% +0.2 0.24 ± 32%
> perf-profile.self.cycles-pp.ttwu_do_activate
> 0.16 ± 22% +0.2 0.31 ± 18%
> perf-profile.self.cycles-pp.dequeue_entity
> 0.00 +0.2 0.16 ± 23%
> perf-profile.self.cycles-pp.place_entity
> 0.14 ± 34% +0.2 0.31 ± 21%
> perf-profile.self.cycles-pp.atime_needs_update
> 0.08 ± 56% +0.2 0.25 ± 24%
> perf-profile.self.cycles-pp.wake_affine
> 0.19 ± 34% +0.2 0.40 ± 20%
> perf-profile.self.cycles-pp.__fdget_pos
> 0.18 ± 39% +0.2 0.38 ± 20%
> perf-profile.self.cycles-pp.aa_file_perm
> 0.09 ± 5% +0.2 0.30 ± 23%
> perf-profile.self.cycles-pp.__mark_inode_dirty
> 0.08 ± 59% +0.2 0.31 ± 41%
> perf-profile.self.cycles-pp.migrate_task_rq_fair
> 0.22 ± 17% +0.2 0.46 ± 20%
> perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore
> 0.14 ± 21% +0.2 0.38 ± 18%
> perf-profile.self.cycles-pp.finish_task_switch
> 0.12 ± 30% +0.2 0.37 ± 27%
> perf-profile.self.cycles-pp.select_task_rq
> 0.00 +0.3 0.25 ± 34%
> perf-profile.self.cycles-pp._copy_to_iter
> 0.25 ± 41% +0.3 0.50 ± 23%
> perf-profile.self.cycles-pp.vfs_read
> 0.00 +0.3 0.26 ± 18%
> perf-profile.self.cycles-pp.sched_ttwu_pending
> 0.52 ± 15% +0.3 0.79 ± 10%
> perf-profile.self.cycles-pp.perf_tp_event
> 0.02 ± 99% +0.3 0.30 ± 22%
> perf-profile.self.cycles-pp.llist_reverse_order
> 0.05 ± 74% +0.3 0.34 ± 14%
> perf-profile.self.cycles-pp.ttwu_queue_wakelist
> 0.14 ± 35% +0.3 0.47 ± 22%
> perf-profile.self.cycles-pp.file_update_time
> 0.04 ± 71% +0.4 0.40 ± 15%
> perf-profile.self.cycles-pp.__flush_smp_call_function_queue
> 0.25 ± 28% +0.5 0.73 ± 21%
> perf-profile.self.cycles-pp.dequeue_task_fair
> 0.22 ± 30% +0.5 0.74 ± 21%
> perf-profile.self.cycles-pp.__wake_up_common
> 0.29 ± 25% +0.5 0.84 ± 20%
> perf-profile.self.cycles-pp.__list_del_entry_valid
> 0.36 ± 30% +0.6 0.92 ± 19%
> perf-profile.self.cycles-pp.enqueue_task_fair
> 0.43 ± 45% +0.6 1.00 ± 25%
> perf-profile.self.cycles-pp.__pthread_disable_asynccancel
> 0.31 ± 46% +0.6 0.94 ± 30%
> perf-profile.self.cycles-pp.fput
> 0.48 ± 26% +0.6 1.11 ± 23%
> perf-profile.self.cycles-pp.__update_load_avg_se
> 0.52 ± 31% +0.6 1.16 ± 21%
> perf-profile.self.cycles-pp.__update_load_avg_cfs_rq
> 0.56 ± 37% +0.7 1.22 ± 22%
> perf-profile.self.cycles-pp.pipe_read
> 0.49 ± 31% +0.7 1.16 ± 27%
> perf-profile.self.cycles-pp.restore_fpregs_from_fpstate
> 0.23 ± 31% +0.7 0.94 ± 23%
> perf-profile.self.cycles-pp.perf_trace_sched_wakeup_template
> 0.02 ± 99% +0.8 0.80 ± 29%
> perf-profile.self.cycles-pp.llist_add_batch
> 0.37 ± 49% +0.8 1.15 ± 27%
> perf-profile.self.cycles-pp.task_h_load
> 0.24 ± 37% +0.8 1.04 ± 31%
> perf-profile.self.cycles-pp._raw_spin_lock_irq
> 0.34 ± 32% +0.8 1.18 ± 29%
> perf-profile.self.cycles-pp.select_idle_sibling
> 0.28 ± 35% +0.8 1.13 ± 29%
> perf-profile.self.cycles-pp.prepare_to_wait_event
> 0.40 ± 45% +1.0 1.39 ± 28%
> perf-profile.self.cycles-pp.prepare_task_switch
> 0.59 ± 33% +1.0 1.59 ± 28%
> perf-profile.self.cycles-pp.__switch_to_asm
> 0.54 ± 40% +1.1 1.61 ± 28%
> perf-profile.self.cycles-pp.pipe_write
> 0.61 ± 50% +1.2 1.81 ± 20%
> perf-profile.self.cycles-pp.mutex_unlock
> 0.85 ± 44% +1.3 2.13 ± 22%
> perf-profile.self.cycles-pp.__fget_files
> 0.00 +1.3 1.28 ± 33%
> perf-profile.self.cycles-pp._copy_from_iter
> 0.77 ± 32% +1.4 2.19 ± 24%
> perf-profile.self.cycles-pp.__schedule
> 0.77 ± 44% +1.5 2.31 ± 24%
> perf-profile.self.cycles-pp.mutex_lock
> 0.84 ± 46% +1.6 2.47 ± 23%
> perf-profile.self.cycles-pp.copy_user_enhanced_fast_string
> 0.61 ± 37% +1.7 2.34 ± 30%
> perf-profile.self.cycles-pp._raw_spin_lock
> 0.69 ± 29% +2.1 2.83 ± 27%
> perf-profile.self.cycles-pp.available_idle_cpu
> 0.86 ± 32% +2.4 3.21 ± 27%
> perf-profile.self.cycles-pp._raw_spin_lock_irqsave
>
>
> 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.
>
>
> #regzbot introduced: 59bb69c67c
>
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