From: Abel Wu <wuyun.abel@bytedance.com>
To: kernel test robot <oliver.sang@intel.com>
Cc: 0day robot <lkp@intel.com>, LKML <linux-kernel@vger.kernel.org>,
lkp@lists.01.org, ying.huang@intel.com, feng.tang@intel.com,
zhengjun.xing@linux.intel.com, fengwei.yin@intel.com,
guobing.chen@intel.com, ming.a.chen@intel.com,
frank.du@intel.com, Shuhua.Fan@intel.com, wangyang.guo@intel.com,
Wenhuan.Huang@intel.com, jessica.ji@intel.com,
shan.kang@intel.com, guangli.li@intel.com, tiejun.li@intel.com,
yu.ma@intel.com, dapeng1.mi@intel.com, jiebin.sun@intel.com,
gengxin.xie@intel.com, fan.zhao@intel.com,
Peter Zijlstra <peterz@infradead.org>,
Mel Gorman <mgorman@suse.de>,
Vincent Guittot <vincent.guittot@linaro.org>,
Josh Don <joshdon@google.com>, Chen Yu <yu.c.chen@intel.com>,
Tim Chen <tim.c.chen@linux.intel.com>,
K Prateek Nayak <kprateek.nayak@amd.com>,
"Gautham R . Shenoy" <gautham.shenoy@amd.com>,
aubrey.li@linux.intel.com
Subject: [sched/fair] 32fe13cd7a: phoronix-test-suite.fio.SequentialWrite.IO_uring.Yes.No.4KB.DefaultTestDirectory.mb_s -11.7% regression
Date: Sun, 10 Jul 2022 00:14:15 +0800 [thread overview]
Message-ID: <9e02396c-0656-e3be-7947-5526fcab48ba@bytedance.com> (raw)
In-Reply-To: <YsmT6VAqPybIe9Pu@xsang-OptiPlex-9020>
Hi Robot, thanks for your testing!
On 7/9/22 10:42 PM, kernel test robot Wrote:
>
>
> Greeting,
>
> FYI, we noticed a -11.7% regression of phoronix-test-suite.fio.SequentialWrite.IO_uring.Yes.No.4KB.DefaultTestDirectory.mb_s due to commit:
>
>
> commit: 32fe13cd7aa184ed349d698ebf6f420fa426dd73 ("[PATCH v4 7/7] sched/fair: de-entropy for SIS filter")
> url: https://github.com/intel-lab-lkp/linux/commits/Abel-Wu/sched-fair-improve-scan-efficiency-of-SIS/20220619-200743
> base: https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git f3dd3f674555bd9455c5ae7fafce0696bd9931b3
> patch link: https://lore.kernel.org/lkml/20220619120451.95251-8-wuyun.abel@bytedance.com
>
> in testcase: phoronix-test-suite
> on test machine: 96 threads 2 sockets Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 512G memory
Does SNC enabled?
> with following parameters:
>
> test: fio-1.14.1
> option_a: Sequential Write
> option_b: IO_uring
> option_c: Yes
> option_d: No
> option_e: 4KB
> option_f: Default Test Directory
> cpufreq_governor: performance
> ucode: 0x500320a
>
> test-description: The Phoronix Test Suite is the most comprehensive testing and benchmarking platform available that provides an extensible framework for which new tests can be easily added.
> test-url: http://www.phoronix-test-suite.com/
>
> In addition to that, the commit also has significant impact on the following tests:
>
> +------------------+-------------------------------------------------------------------------------------+
> | testcase: change | stress-ng: stress-ng.vm-rw.ops_per_sec 113.5% improvement |
> | test machine | 128 threads 2 sockets Intel(R) Xeon(R) Platinum 8358 CPU @ 2.60GHz with 128G memory |
> | test parameters | class=memory |
> | | cpufreq_governor=performance |
> | | nr_threads=100% |
> | | test=vm-rw |
> | | testtime=60s |
> | | ucode=0xd000331 |
> +------------------+-------------------------------------------------------------------------------------+
>
>
> If you fix the issue, kindly add following tag
> Reported-by: kernel test robot <oliver.sang@intel.com>
>
>
> Details are as below:
> -------------------------------------------------------------------------------------------------->
>
>
> 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/kconfig/option_a/option_b/option_c/option_d/option_e/option_f/rootfs/tbox_group/test/testcase/ucode:
> gcc-11/performance/x86_64-rhel-8.3/Sequential Write/IO_uring/Yes/No/4KB/Default Test Directory/debian-x86_64-phoronix/lkp-csl-2sp7/fio-1.14.1/phoronix-test-suite/0x500320a
>
> commit:
> fcc108377a ("sched/fair: skip busy cores in SIS search")
> 32fe13cd7a ("sched/fair: de-entropy for SIS filter")
Does the 5th patch applied? It's also important to bail out early if
the system is busy enough that idle cpus can hardly exist.
>
> fcc108377a7cf79c 32fe13cd7aa184ed349d698ebf6
> ---------------- ---------------------------
> %stddev %change %stddev
> \ | \
> 166666 -11.6% 147277 ± 3% phoronix-test-suite.fio.SequentialWrite.IO_uring.Yes.No.4KB.DefaultTestDirectory.iops
> 651.00 -11.7% 574.83 ± 3% phoronix-test-suite.fio.SequentialWrite.IO_uring.Yes.No.4KB.DefaultTestDirectory.mb_s
> 3145 ± 5% -18.4% 2565 ± 12% meminfo.Writeback
> 0.19 ± 4% -0.0 0.17 ± 2% mpstat.cpu.all.iowait%
> 2228 ± 33% -37.5% 1392 ± 21% numa-meminfo.node0.Writeback
> 553.33 ± 37% -35.9% 354.83 ± 18% numa-vmstat.node0.nr_writeback
I will try to reproduce the test to see why there is such a big change.
> 445604 ± 4% -12.5% 390116 ± 4% vmstat.io.bo
> 14697101 ± 3% -11.0% 13074497 ± 4% perf-stat.i.cache-misses
> 9447 ± 8% -37.6% 5890 ± 5% perf-stat.i.cpu-migrations
> 5125 ± 6% +12.9% 5786 ± 6% perf-stat.i.instructions-per-iTLB-miss
> 2330431 ± 4% -11.4% 2064845 ± 4% perf-stat.i.node-loads
> 2.55 ±104% -1.6 0.96 ± 14% perf-profile.calltrace.cycles-pp.poll_idle.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle
> 2.62 ±102% -1.6 0.99 ± 14% perf-profile.children.cycles-pp.poll_idle
> 0.82 ± 23% -0.3 0.53 ± 23% perf-profile.children.cycles-pp.asm_sysvec_call_function_single
> 0.74 ± 23% -0.3 0.46 ± 23% perf-profile.children.cycles-pp.sysvec_call_function_single
> 0.69 ± 24% -0.3 0.44 ± 24% perf-profile.children.cycles-pp.__sysvec_call_function_single
> 0.38 ± 10% -0.1 0.28 ± 18% perf-profile.children.cycles-pp.__perf_event_header__init_id
> 0.16 ± 13% -0.0 0.11 ± 22% perf-profile.children.cycles-pp.__task_pid_nr_ns
> 2.10 ±108% -1.3 0.79 ± 11% perf-profile.self.cycles-pp.poll_idle
> 0.16 ± 13% -0.0 0.11 ± 22% perf-profile.self.cycles-pp.__task_pid_nr_ns
>
>
> ***************************************************************************************************
> lkp-icl-2sp6: 128 threads 2 sockets Intel(R) Xeon(R) Platinum 8358 CPU @ 2.60GHz with 128G memory
> =========================================================================================
> class/compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime/ucode:
> memory/gcc-11/performance/x86_64-rhel-8.3/100%/debian-11.1-x86_64-20220510.cgz/lkp-icl-2sp6/vm-rw/stress-ng/60s/0xd000331
>
> commit:
> fcc108377a ("sched/fair: skip busy cores in SIS search")
> 32fe13cd7a ("sched/fair: de-entropy for SIS filter")
>
> fcc108377a7cf79c 32fe13cd7aa184ed349d698ebf6
> ---------------- ---------------------------
> %stddev %change %stddev
> \ | \
> 7328835 ± 17% +3441.0% 2.595e+08 ± 12% stress-ng.time.involuntary_context_switches
It's really horrible..
> 123165 ± 3% -14.1% 105742 ± 2% stress-ng.time.minor_page_faults
> 8940 +32.8% 11872 ± 2% stress-ng.time.percent_of_cpu_this_job_got
> 5268 +33.4% 7027 ± 2% stress-ng.time.system_time
> 278.70 +21.5% 338.70 ± 2% stress-ng.time.user_time
> 2.554e+08 +13.3% 2.894e+08 stress-ng.time.voluntary_context_switches
> 1.283e+08 +113.5% 2.74e+08 ± 6% stress-ng.vm-rw.ops
> 2139049 +113.5% 4567054 ± 6% stress-ng.vm-rw.ops_per_sec
> 39411 ± 34% +56.3% 61612 ± 24% numa-meminfo.node1.Mapped
> 5013 -22.5% 3883 ± 4% uptime.idle
> 1.798e+09 -60.3% 7.135e+08 ± 21% cpuidle..time > 1.701e+08 -87.3% 21598951 ± 90% cpuidle..usage
> 75821 ± 2% -11.6% 67063 ± 5% meminfo.Active
> 75821 ± 2% -11.6% 67063 ± 5% meminfo.Active(anon)
> 81710 ± 2% +20.1% 98158 ± 3% meminfo.Mapped
> 26.00 -59.6% 10.50 ± 18% vmstat.cpu.id
> 112.00 +10.9% 124.17 vmstat.procs.r
> 6561639 +31.6% 8634043 ± 2% vmstat.system.cs
> 990604 -62.4% 372118 ± 18% vmstat.system.in
> 24.13 -16.1 8.03 ± 23% mpstat.cpu.all.idle%
This indicates that the SIS scan efficiency is largely improved, which
is in line with our expectations.
> 2.71 -1.6 1.11 ± 10% mpstat.cpu.all.irq%
> 0.17 ± 6% -0.1 0.06 ± 30% mpstat.cpu.all.soft%
> 69.33 +17.4 86.71 ± 2% mpstat.cpu.all.sys%
> 3.66 +0.4 4.09 mpstat.cpu.all.usr%
> 2.024e+09 +93.3% 3.912e+09 ± 16% numa-vmstat.node0.nr_foll_pin_acquired
> 2.024e+09 +93.3% 3.912e+09 ± 16% numa-vmstat.node0.nr_foll_pin_released
> 2.043e+09 ± 2% +119.0% 4.473e+09 numa-vmstat.node1.nr_foll_pin_acquired
> 2.043e+09 ± 2% +119.0% 4.473e+09 numa-vmstat.node1.nr_foll_pin_released
> 9865 ± 34% +54.1% 15201 ± 23% numa-vmstat.node1.nr_mapped
> 18954 ± 2% -11.5% 16767 ± 5% proc-vmstat.nr_active_anon
> 4.062e+09 +107.3% 8.419e+09 ± 7% proc-vmstat.nr_foll_pin_acquired
> 4.062e+09 +107.3% 8.419e+09 ± 7% proc-vmstat.nr_foll_pin_released
> 87380 +5.3% 92039 proc-vmstat.nr_inactive_anon
> 24453 -3.2% 23658 proc-vmstat.nr_kernel_stack
> 20437 ± 2% +19.6% 24443 ± 3% proc-vmstat.nr_mapped
> 18954 ± 2% -11.5% 16767 ± 5% proc-vmstat.nr_zone_active_anon
> 87380 +5.3% 92039 proc-vmstat.nr_zone_inactive_anon
> 108777 ± 4% -17.2% 90014 proc-vmstat.numa_hint_faults
> 96756 ± 6% -17.6% 79691 ± 2% proc-vmstat.numa_hint_faults_local
> 490607 -4.4% 469155 proc-vmstat.pgfault
> 80.85 +10.9 91.75 turbostat.Busy%
> 3221 -5.0% 3060 turbostat.Bzy_MHz
> 77259218 ± 3% -87.0% 10057388 ± 92% turbostat.C1
> 6.74 ± 2% -5.9 0.85 ± 90% turbostat.C1%
> 92212921 -87.8% 11243535 ± 91% turbostat.C1E
> 12.00 ± 22% -6.6 5.42 ± 57% turbostat.C1E%
and this.
> 16.39 ± 16% -62.0% 6.24 ± 55% turbostat.CPU%c1
> 0.16 ± 3% +74.7% 0.29 ± 6% turbostat.IPC
> 65322725 -62.5% 24502370 ± 18% turbostat.IRQ
> 339708 -86.5% 45941 ± 88% turbostat.POLL
> 0.05 -0.0 0.01 ± 82% turbostat.POLL%
> 165121 ± 23% -100.0% 39.19 ±101% sched_debug.cfs_rq:/.MIN_vruntime.avg
> 2462709 -99.9% 3407 ±102% sched_debug.cfs_rq:/.MIN_vruntime.max
> 607348 ± 11% -99.9% 348.57 ±100% sched_debug.cfs_rq:/.MIN_vruntime.stddev
> 0.56 ± 4% +11.8% 0.62 ± 3% sched_debug.cfs_rq:/.h_nr_running.avg
> 2.58 ± 13% -38.7% 1.58 ± 11% sched_debug.cfs_rq:/.h_nr_running.max
> 0.54 ± 9% -39.7% 0.33 ± 6% sched_debug.cfs_rq:/.h_nr_running.stddev
> 165121 ± 23% -100.0% 39.19 ±101% sched_debug.cfs_rq:/.max_vruntime.avg
> 2462709 -99.9% 3407 ±102% sched_debug.cfs_rq:/.max_vruntime.max
> 607348 ± 11% -99.9% 348.57 ±100% sched_debug.cfs_rq:/.max_vruntime.stddev
> 2439879 +43.2% 3493834 ± 4% sched_debug.cfs_rq:/.min_vruntime.avg
> 2485561 +49.1% 3705888 sched_debug.cfs_rq:/.min_vruntime.max
> 2129935 +34.5% 2865147 ± 2% sched_debug.cfs_rq:/.min_vruntime.min
> 35480 ± 17% +324.2% 150497 ± 59% sched_debug.cfs_rq:/.min_vruntime.stddev
> 0.43 ± 3% +27.9% 0.55 sched_debug.cfs_rq:/.nr_running.avg
> 0.35 ± 5% -57.2% 0.15 ± 4% sched_debug.cfs_rq:/.nr_running.stddev
> 2186 ± 15% -27.9% 1575 ± 11% sched_debug.cfs_rq:/.runnable_avg.max
> 152.08 ± 6% +134.5% 356.58 ± 31% sched_debug.cfs_rq:/.runnable_avg.min
> 399.32 ± 4% -50.5% 197.69 ± 8% sched_debug.cfs_rq:/.runnable_avg.stddev
> 25106 ± 50% +1121.1% 306577 ± 66% sched_debug.cfs_rq:/.spread0.max
> 35510 ± 17% +323.3% 150305 ± 59% sched_debug.cfs_rq:/.spread0.stddev
> 545.95 ± 3% +16.4% 635.59 sched_debug.cfs_rq:/.util_avg.avg
> 1726 ± 15% -26.7% 1266 ± 14% sched_debug.cfs_rq:/.util_avg.max
> 154.67 ± 2% +112.9% 329.33 ± 30% sched_debug.cfs_rq:/.util_avg.min
> 317.35 ± 4% -43.1% 180.53 ± 10% sched_debug.cfs_rq:/.util_avg.stddev
> 192.70 ± 6% +104.5% 393.98 ± 7% sched_debug.cfs_rq:/.util_est_enqueued.avg
> 5359 ± 4% -26.1% 3958 ± 8% sched_debug.cpu.avg_idle.min
> 4.69 ± 7% +136.0% 11.07 ± 5% sched_debug.cpu.clock.stddev
> 2380 ± 4% +31.0% 3117 sched_debug.cpu.curr->pid.avg
> 1818 ± 3% -65.9% 620.26 ± 8% sched_debug.cpu.curr->pid.stddev
> 0.00 ± 8% +59.7% 0.00 ± 10% sched_debug.cpu.next_balance.stddev
> 2.58 ± 17% -41.9% 1.50 sched_debug.cpu.nr_running.max
> 0.52 ± 9% -43.2% 0.29 ± 5% sched_debug.cpu.nr_running.stddev
> 1610935 +31.3% 2115112 ± 2% sched_debug.cpu.nr_switches.avg
> 1661619 +34.5% 2234069 sched_debug.cpu.nr_switches.max
> 1415677 ± 3% +20.3% 1702445 sched_debug.cpu.nr_switches.min
> 30576 ± 26% +151.6% 76923 ± 37% sched_debug.cpu.nr_switches.stddev
> 25.47 -91.3% 2.21 ± 69% perf-stat.i.MPKI
> 3.342e+10 +84.7% 6.172e+10 ± 5% perf-stat.i.branch-instructions
> 0.58 -0.3 0.33 ± 5% perf-stat.i.branch-miss-rate%
> 1.667e+08 -13.2% 1.448e+08 ± 2% perf-stat.i.branch-misses
> 0.63 ± 17% +4.8 5.42 ± 39% perf-stat.i.cache-miss-rate%
> 18939524 ± 4% -46.6% 10109353 ± 18% perf-stat.i.cache-misses
> 4.422e+09 -87.1% 5.724e+08 ± 77% perf-stat.i.cache-references
> 6897069 +30.8% 9023752 ± 2% perf-stat.i.context-switches
> 2.04 -43.3% 1.16 ± 5% perf-stat.i.cpi
> 3.523e+11 +3.8% 3.656e+11 perf-stat.i.cpu-cycles
> 2322589 -86.6% 310934 ± 93% perf-stat.i.cpu-migrations
> 18560 ± 4% +113.2% 39578 ± 15% perf-stat.i.cycles-between-cache-misses
> 0.20 -0.2 0.02 ± 70% perf-stat.i.dTLB-load-miss-rate%
> 85472762 -87.2% 10962661 ± 82% perf-stat.i.dTLB-load-misses
> 4.266e+10 +83.8% 7.841e+10 ± 5% perf-stat.i.dTLB-loads
> 0.10 ± 4% -0.1 0.01 ± 72% perf-stat.i.dTLB-store-miss-rate%
> 25396322 ± 4% -86.5% 3437369 ± 90% perf-stat.i.dTLB-store-misses
> 2.483e+10 +85.2% 4.598e+10 ± 5% perf-stat.i.dTLB-stores
> 1.699e+11 +85.8% 3.157e+11 ± 5% perf-stat.i.instructions
> 0.50 +73.4% 0.87 ± 4% perf-stat.i.ipc
> 2.75 +3.8% 2.86 perf-stat.i.metric.GHz
> 822.90 +77.2% 1458 ± 5% perf-stat.i.metric.M/sec
> 5691 -3.4% 5500 perf-stat.i.minor-faults
> 91.09 +4.6 95.71 perf-stat.i.node-load-miss-rate%
> 334087 ± 17% -67.4% 109033 ± 18% perf-stat.i.node-loads
> 70.09 +17.6 87.68 ± 6% perf-stat.i.node-store-miss-rate%
> 1559730 ± 5% -64.9% 548115 ± 56% perf-stat.i.node-stores
> 5704 -3.3% 5513 perf-stat.i.page-faults
> 26.03 -92.7% 1.89 ± 83% perf-stat.overall.MPKI
> 0.50 -0.3 0.24 ± 8% perf-stat.overall.branch-miss-rate%
> 0.43 ± 3% +2.5 2.91 ± 60% perf-stat.overall.cache-miss-rate%
> 2.08 -44.0% 1.16 ± 5% perf-stat.overall.cpi
> 18664 ± 4% +100.4% 37402 ± 16% perf-stat.overall.cycles-between-cache-misses
> 0.20 -0.2 0.01 ± 87% perf-stat.overall.dTLB-load-miss-rate%
> 0.10 ± 4% -0.1 0.01 ± 96% perf-stat.overall.dTLB-store-miss-rate%
> 0.48 +79.1% 0.86 ± 4% perf-stat.overall.ipc
> 91.02 +5.1 96.07 perf-stat.overall.node-load-miss-rate%
> 70.91 +17.6 88.54 ± 6% perf-stat.overall.node-store-miss-rate%
> 3.289e+10 +85.0% 6.085e+10 ± 5% perf-stat.ps.branch-instructions
> 1.641e+08 -13.1% 1.425e+08 ± 2% perf-stat.ps.branch-misses
> 18633656 ± 4% -46.7% 9931368 ± 18% perf-stat.ps.cache-misses
> 4.354e+09 -87.1% 5.613e+08 ± 77% perf-stat.ps.cache-references
> 6788892 +31.0% 8894592 ± 2% perf-stat.ps.context-switches
> 3.47e+11 +3.9% 3.604e+11 perf-stat.ps.cpu-cycles
> 2286778 -86.7% 304327 ± 94% perf-stat.ps.cpu-migrations
> 84173329 -87.2% 10770448 ± 82% perf-stat.ps.dTLB-load-misses
> 4.198e+10 +84.1% 7.73e+10 ± 5% perf-stat.ps.dTLB-loads
> 25001705 ± 4% -86.5% 3364501 ± 91% perf-stat.ps.dTLB-store-misses
> 2.444e+10 +85.5% 4.533e+10 ± 5% perf-stat.ps.dTLB-stores
> 1.673e+11 +86.1% 3.112e+11 ± 5% perf-stat.ps.instructions
> 12.40 -1.5% 12.22 perf-stat.ps.major-faults
> 5543 -3.9% 5329 perf-stat.ps.minor-faults
> 332272 ± 17% -66.0% 112911 ± 16% perf-stat.ps.node-loads
> 1533930 ± 5% -65.2% 534337 ± 57% perf-stat.ps.node-stores
> 5556 -3.9% 5341 perf-stat.ps.page-faults
> 1.065e+13 +86.7% 1.988e+13 ± 5% perf-stat.total.instructions
> 18.10 -16.2 1.91 ±142% perf-profile.calltrace.cycles-pp.secondary_startup_64_no_verify
> 17.94 -16.1 1.88 ±142% perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64_no_verify
> 17.93 -16.1 1.88 ±142% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
> 17.90 -16.0 1.88 ±142% perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
> 15.83 -8.0 7.86 ± 20% perf-profile.calltrace.cycles-pp.read
> 13.06 -8.0 5.11 ± 30% perf-profile.calltrace.cycles-pp.pipe_read.new_sync_read.vfs_read.ksys_read.do_syscall_64
> 13.21 -7.9 5.30 ± 29% perf-profile.calltrace.cycles-pp.new_sync_read.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 13.58 -7.9 5.68 ± 27% perf-profile.calltrace.cycles-pp.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read
> 14.72 -7.9 6.86 ± 22% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.read
> 14.51 -7.8 6.73 ± 22% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.read
> 13.77 -7.5 6.23 ± 23% perf-profile.calltrace.cycles-pp.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read
> 9.90 -7.1 2.83 ± 47% perf-profile.calltrace.cycles-pp.__schedule.schedule.pipe_read.new_sync_read.vfs_read
> 9.96 -7.0 2.92 ± 45% perf-profile.calltrace.cycles-pp.schedule.pipe_read.new_sync_read.vfs_read.ksys_read
> 7.84 -6.9 0.94 ±142% perf-profile.calltrace.cycles-pp.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
> 7.44 -6.8 0.63 ±142% perf-profile.calltrace.cycles-pp.flush_smp_call_function_queue.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
> 7.07 -6.2 0.85 ±142% perf-profile.calltrace.cycles-pp.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary
> 7.03 -6.2 0.84 ±142% perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry
> 8.60 -5.3 3.30 ± 44% perf-profile.calltrace.cycles-pp.__wake_up_common.__wake_up_common_lock.pipe_write.new_sync_write.vfs_write
> 8.75 -5.3 3.49 ± 41% perf-profile.calltrace.cycles-pp.__wake_up_common_lock.pipe_write.new_sync_write.vfs_write.ksys_write
> 10.84 -5.3 5.58 ± 27% perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
> 10.53 -5.2 5.29 ± 28% perf-profile.calltrace.cycles-pp.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
> 6.70 -5.2 1.49 ± 62% perf-profile.calltrace.cycles-pp.dequeue_task_fair.__schedule.schedule.pipe_read.new_sync_read
> 10.02 -5.2 4.83 ± 30% perf-profile.calltrace.cycles-pp.pipe_write.new_sync_write.vfs_write.ksys_write.do_syscall_64
> 5.64 -5.2 0.48 ±142% perf-profile.calltrace.cycles-pp.sched_ttwu_pending.flush_smp_call_function_queue.do_idle.cpu_startup_entry.start_secondary
> 10.08 -5.1 4.98 ± 29% perf-profile.calltrace.cycles-pp.new_sync_write.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 8.21 -5.1 3.14 ± 44% perf-profile.calltrace.cycles-pp.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock.pipe_write
> 8.25 -5.1 3.20 ± 44% perf-profile.calltrace.cycles-pp.autoremove_wake_function.__wake_up_common.__wake_up_common_lock.pipe_write.new_sync_write
> 5.11 -4.7 0.40 ±141% perf-profile.calltrace.cycles-pp.ttwu_do_activate.sched_ttwu_pending.flush_smp_call_function_queue.do_idle.cpu_startup_entry
> 5.07 -4.7 0.40 ±141% perf-profile.calltrace.cycles-pp.enqueue_task_fair.ttwu_do_activate.sched_ttwu_pending.flush_smp_call_function_queue.do_idle
> 5.19 -4.6 0.55 ±141% perf-profile.calltrace.cycles-pp.dequeue_entity.dequeue_task_fair.__schedule.schedule.pipe_read
> 20.28 -4.6 15.69 ± 5% perf-profile.calltrace.cycles-pp.copy_user_enhanced_fast_string.copyout.copy_page_to_iter.process_vm_rw_single_vec.process_vm_rw_core
> 20.55 -4.3 16.22 ± 5% perf-profile.calltrace.cycles-pp.copyout.copy_page_to_iter.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw
> 10.91 -3.7 7.17 ± 17% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
> 24.78 -3.7 21.12 ± 2% perf-profile.calltrace.cycles-pp.copy_page_to_iter.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw.__x64_sys_process_vm_readv
> 10.95 -3.6 7.30 ± 16% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.write
> 11.15 -3.0 8.18 ± 13% perf-profile.calltrace.cycles-pp.write
> 1.03 ± 4% -0.4 0.62 ± 14% perf-profile.calltrace.cycles-pp.stress_vm_child
> 0.76 ± 4% +0.5 1.22 ± 10% perf-profile.calltrace.cycles-pp.stress_vm_rw
> 0.63 +0.5 1.15 ± 23% perf-profile.calltrace.cycles-pp.enqueue_task_fair.ttwu_do_activate.try_to_wake_up.autoremove_wake_function.__wake_up_common
> 0.53 ± 2% +0.5 1.06 ± 9% perf-profile.calltrace.cycles-pp.__might_fault.copy_page_to_iter.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw
> 0.64 +0.5 1.18 ± 22% perf-profile.calltrace.cycles-pp.ttwu_do_activate.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock
> 0.00 +0.6 0.60 ± 7% perf-profile.calltrace.cycles-pp.__might_resched.copy_page_to_iter.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw
> 0.00 +1.0 0.96 ± 15% perf-profile.calltrace.cycles-pp.__schedule.schedule.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode
> 0.00 +1.0 1.02 ± 17% perf-profile.calltrace.cycles-pp.mod_node_page_state.gup_put_folio.unpin_user_pages.process_vm_rw_single_vec.process_vm_rw_core
> 0.00 +1.0 1.02 ± 10% perf-profile.calltrace.cycles-pp.__might_fault.copy_page_from_iter.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw
> 0.00 +1.0 1.03 ± 15% perf-profile.calltrace.cycles-pp.schedule.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64
> 0.00 +1.0 1.04 ± 17% perf-profile.calltrace.cycles-pp.mod_node_page_state.gup_put_folio.unpin_user_pages_dirty_lock.process_vm_rw_single_vec.process_vm_rw_core
> 0.00 +1.1 1.10 ± 16% 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
> 1.24 ± 2% +1.4 2.60 ± 11% perf-profile.calltrace.cycles-pp._raw_spin_lock.follow_page_pte.__get_user_pages.__get_user_pages_remote.process_vm_rw_single_vec
> 0.00 +1.4 1.40 ± 16% perf-profile.calltrace.cycles-pp.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
> 0.00 +1.5 1.46 ± 16% perf-profile.calltrace.cycles-pp.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
> 1.04 +1.5 2.54 ± 14% perf-profile.calltrace.cycles-pp.gup_put_folio.unpin_user_pages.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw
> 0.99 ± 2% +1.6 2.57 ± 14% perf-profile.calltrace.cycles-pp.gup_put_folio.unpin_user_pages_dirty_lock.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw
> 0.00 +1.7 1.69 ± 11% perf-profile.calltrace.cycles-pp.follow_pud_mask.__get_user_pages.__get_user_pages_remote.process_vm_rw_single_vec.process_vm_rw_core
> 1.35 +1.8 3.20 ± 14% perf-profile.calltrace.cycles-pp.unpin_user_pages.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw.__x64_sys_process_vm_readv
> 0.00 +2.0 1.97 ± 10% perf-profile.calltrace.cycles-pp.follow_page_mask.__get_user_pages.__get_user_pages_remote.process_vm_rw_single_vec.process_vm_rw_core
> 1.27 ± 2% +2.0 3.30 ± 14% perf-profile.calltrace.cycles-pp.unpin_user_pages_dirty_lock.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw.__x64_sys_process_vm_writev
> 0.00 +2.1 2.12 ± 18% perf-profile.calltrace.cycles-pp.mod_node_page_state.try_grab_page.follow_page_pte.__get_user_pages.__get_user_pages_remote
> 0.00 +2.3 2.30 ± 11% perf-profile.calltrace.cycles-pp.follow_pmd_mask.__get_user_pages.__get_user_pages_remote.process_vm_rw_single_vec.process_vm_rw_core
> 3.16 ± 2% +2.4 5.51 ± 11% perf-profile.calltrace.cycles-pp.try_grab_page.follow_page_pte.__get_user_pages.__get_user_pages_remote.process_vm_rw_single_vec
> 32.57 +5.2 37.78 ± 3% perf-profile.calltrace.cycles-pp.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw.__x64_sys_process_vm_readv.do_syscall_64
> 33.67 +5.6 39.24 ± 3% perf-profile.calltrace.cycles-pp.process_vm_rw_core.process_vm_rw.__x64_sys_process_vm_readv.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 6.24 +6.1 12.34 ± 10% perf-profile.calltrace.cycles-pp.__get_user_pages_remote.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw.__x64_sys_process_vm_readv
> 34.23 +6.2 40.39 ± 3% perf-profile.calltrace.cycles-pp.process_vm_rw.__x64_sys_process_vm_readv.do_syscall_64.entry_SYSCALL_64_after_hwframe.process_vm_readv
> 34.22 +6.2 40.42 ± 3% perf-profile.calltrace.cycles-pp.__x64_sys_process_vm_readv.do_syscall_64.entry_SYSCALL_64_after_hwframe.process_vm_readv
> 34.39 +6.3 40.68 ± 3% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.process_vm_readv
> 34.49 +6.4 40.88 ± 3% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.process_vm_readv
> 34.87 +6.6 41.43 ± 3% perf-profile.calltrace.cycles-pp.process_vm_readv
> 6.26 +6.6 12.83 ± 11% perf-profile.calltrace.cycles-pp.follow_page_pte.__get_user_pages.__get_user_pages_remote.process_vm_rw_single_vec.process_vm_rw_core
> 7.43 +6.6 14.02 ± 8% perf-profile.calltrace.cycles-pp.copy_user_enhanced_fast_string.copyin.copy_page_from_iter.process_vm_rw_single_vec.process_vm_rw_core
> 7.70 +6.9 14.64 ± 8% perf-profile.calltrace.cycles-pp.copyin.copy_page_from_iter.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw
> 4.80 ± 2% +7.2 11.95 ± 12% perf-profile.calltrace.cycles-pp.__get_user_pages_remote.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw.__x64_sys_process_vm_writev
> 9.52 +9.3 18.86 ± 8% perf-profile.calltrace.cycles-pp.copy_page_from_iter.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw.__x64_sys_process_vm_writev
> 10.80 +12.9 23.71 ± 11% perf-profile.calltrace.cycles-pp.__get_user_pages.__get_user_pages_remote.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw
> 16.02 ± 2% +19.0 35.05 ± 10% perf-profile.calltrace.cycles-pp.process_vm_rw_single_vec.process_vm_rw_core.process_vm_rw.__x64_sys_process_vm_writev.do_syscall_64
> 16.70 ± 2% +19.7 36.44 ± 10% perf-profile.calltrace.cycles-pp.process_vm_rw_core.process_vm_rw.__x64_sys_process_vm_writev.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 17.15 ± 2% +20.4 37.51 ± 10% perf-profile.calltrace.cycles-pp.process_vm_rw.__x64_sys_process_vm_writev.do_syscall_64.entry_SYSCALL_64_after_hwframe.process_vm_writev
> 17.17 ± 2% +20.4 37.55 ± 10% perf-profile.calltrace.cycles-pp.__x64_sys_process_vm_writev.do_syscall_64.entry_SYSCALL_64_after_hwframe.process_vm_writev
> 17.26 ± 2% +20.5 37.72 ± 10% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.process_vm_writev
> 17.31 ± 2% +20.5 37.83 ± 10% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.process_vm_writev
> 17.60 ± 2% +20.8 38.42 ± 10% perf-profile.calltrace.cycles-pp.process_vm_writev
> 18.10 -16.2 1.92 ±141% perf-profile.children.cycles-pp.secondary_startup_64_no_verify
> 18.10 -16.2 1.92 ±141% perf-profile.children.cycles-pp.cpu_startup_entry
> 18.08 -16.2 1.92 ±141% perf-profile.children.cycles-pp.do_idle
> 17.94 -16.0 1.89 ±141% perf-profile.children.cycles-pp.start_secondary
> 16.00 -8.0 8.02 ± 19% perf-profile.children.cycles-pp.read
> 12.02 -7.9 4.10 ± 37% perf-profile.children.cycles-pp.__schedule
> 13.10 -7.9 5.18 ± 30% perf-profile.children.cycles-pp.pipe_read
> 13.22 -7.9 5.31 ± 29% perf-profile.children.cycles-pp.new_sync_read
> 13.60 -7.9 5.70 ± 27% perf-profile.children.cycles-pp.vfs_read
> 13.78 -7.5 6.25 ± 23% perf-profile.children.cycles-pp.ksys_read
> 7.62 -7.0 0.65 ±142% perf-profile.children.cycles-pp.flush_smp_call_function_queue
> 7.92 -7.0 0.96 ±142% perf-profile.children.cycles-pp.cpuidle_idle_call
> 7.18 -6.6 0.59 ±142% perf-profile.children.cycles-pp.sched_ttwu_pending
> 7.14 -6.3 0.86 ±142% perf-profile.children.cycles-pp.cpuidle_enter
> 7.24 -6.3 0.98 ±124% perf-profile.children.cycles-pp.update_cfs_group
> 7.12 -6.3 0.86 ±142% perf-profile.children.cycles-pp.cpuidle_enter_state
> 9.97 -6.0 3.96 ± 29% perf-profile.children.cycles-pp.schedule
> 6.52 -5.7 0.79 ±142% perf-profile.children.cycles-pp.mwait_idle_with_hints
> 7.11 -5.4 1.69 ± 57% perf-profile.children.cycles-pp.ttwu_do_activate
> 7.07 -5.4 1.66 ± 58% perf-profile.children.cycles-pp.enqueue_task_fair
> 8.61 -5.3 3.30 ± 44% perf-profile.children.cycles-pp.__wake_up_common
> 10.86 -5.2 5.61 ± 26% perf-profile.children.cycles-pp.ksys_write
> 8.76 -5.2 3.51 ± 41% perf-profile.children.cycles-pp.__wake_up_common_lock
> 10.55 -5.2 5.32 ± 28% perf-profile.children.cycles-pp.vfs_write
> 6.72 -5.2 1.50 ± 61% perf-profile.children.cycles-pp.dequeue_task_fair
> 10.04 -5.2 4.88 ± 30% perf-profile.children.cycles-pp.pipe_write
> 10.10 -5.1 5.00 ± 29% perf-profile.children.cycles-pp.new_sync_write
> 8.26 -5.1 3.20 ± 44% perf-profile.children.cycles-pp.autoremove_wake_function
> 8.22 -5.0 3.17 ± 44% perf-profile.children.cycles-pp.try_to_wake_up
> 5.62 -4.7 0.94 ± 62% perf-profile.children.cycles-pp.enqueue_entity
> 21.11 -4.4 16.69 ± 5% perf-profile.children.cycles-pp.copyout
> 5.21 -4.4 0.84 ± 70% perf-profile.children.cycles-pp.dequeue_entity
> 5.50 -4.3 1.25 ± 48% perf-profile.children.cycles-pp.update_load_avg
> 25.20 -3.0 22.21 ± 2% perf-profile.children.cycles-pp.copy_page_to_iter
> 11.21 -2.9 8.33 ± 13% perf-profile.children.cycles-pp.write
> 3.29 -2.5 0.83 ± 78% perf-profile.children.cycles-pp.select_task_rq
> 3.22 -2.4 0.78 ± 83% perf-profile.children.cycles-pp.select_task_rq_fair
> 2.78 -2.2 0.62 ± 93% perf-profile.children.cycles-pp.select_idle_sibling
> 1.80 ± 2% -1.5 0.29 ±137% perf-profile.children.cycles-pp.available_idle_cpu
> 0.87 -0.6 0.22 ± 57% perf-profile.children.cycles-pp.finish_task_switch
> 0.98 -0.5 0.45 ± 23% perf-profile.children.cycles-pp._raw_spin_lock_irqsave
> 0.94 -0.5 0.41 ± 27% perf-profile.children.cycles-pp.prepare_to_wait_event
> 0.60 ± 2% -0.5 0.13 ± 76% perf-profile.children.cycles-pp.switch_mm_irqs_off
> 1.04 ± 4% -0.4 0.63 ± 14% perf-profile.children.cycles-pp.stress_vm_child
> 0.58 -0.3 0.29 ± 28% perf-profile.children.cycles-pp.update_rq_clock
> 0.69 -0.3 0.40 ± 19% perf-profile.children.cycles-pp.prepare_task_switch
> 0.89 ± 3% -0.3 0.62 ± 13% perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt
> 0.58 -0.3 0.31 ± 21% perf-profile.children.cycles-pp.__switch_to_asm
> 0.52 -0.2 0.28 ± 21% perf-profile.children.cycles-pp.___perf_sw_event
> 0.76 ± 4% -0.2 0.56 ± 12% perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt
> 0.28 ± 3% -0.2 0.09 ± 52% perf-profile.children.cycles-pp._find_next_bit
> 0.50 -0.2 0.33 ± 13% perf-profile.children.cycles-pp.security_file_permission
> 0.26 ± 2% -0.2 0.09 ± 41% perf-profile.children.cycles-pp.task_tick_fair
> 0.24 ± 6% -0.2 0.08 ± 57% perf-profile.children.cycles-pp.__irq_exit_rcu
> 0.48 -0.2 0.32 ± 5% perf-profile.children.cycles-pp.set_next_entity
> 0.42 ± 4% -0.1 0.27 ± 13% perf-profile.children.cycles-pp.__hrtimer_run_queues
> 0.30 ± 3% -0.1 0.16 ± 18% perf-profile.children.cycles-pp.scheduler_tick
> 0.37 ± 4% -0.1 0.24 ± 13% perf-profile.children.cycles-pp.tick_sched_timer
> 0.35 ± 4% -0.1 0.22 ± 14% perf-profile.children.cycles-pp.tick_sched_handle
> 0.34 ± 4% -0.1 0.22 ± 15% perf-profile.children.cycles-pp.update_process_times
> 0.25 ± 3% -0.1 0.12 ± 40% perf-profile.children.cycles-pp.find_vma
> 0.19 ± 7% -0.1 0.07 ± 56% perf-profile.children.cycles-pp.__softirqentry_text_start
> 0.68 -0.1 0.56 ± 5% perf-profile.children.cycles-pp.mutex_lock
> 0.26 ± 3% -0.1 0.14 ± 34% perf-profile.children.cycles-pp.find_extend_vma
> 0.38 ± 2% -0.1 0.26 ± 10% perf-profile.children.cycles-pp.apparmor_file_permission
> 0.37 -0.1 0.27 ± 9% perf-profile.children.cycles-pp.__update_load_avg_cfs_rq
> 0.34 -0.1 0.25 ± 10% perf-profile.children.cycles-pp.perf_trace_sched_wakeup_template
> 0.24 ± 3% -0.1 0.16 ± 9% perf-profile.children.cycles-pp.sched_clock_cpu
> 0.17 ± 4% -0.1 0.09 ± 33% perf-profile.children.cycles-pp.vmacache_find
> 0.64 -0.1 0.56 ± 6% perf-profile.children.cycles-pp.switch_fpu_return
> 0.53 ± 4% -0.1 0.46 ± 8% perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt
> 0.53 ± 4% -0.1 0.46 ± 8% perf-profile.children.cycles-pp.hrtimer_interrupt
> 0.19 ± 2% -0.1 0.13 ± 9% perf-profile.children.cycles-pp.native_sched_clock
> 0.57 -0.1 0.50 ± 5% perf-profile.children.cycles-pp.__switch_to
> 0.27 -0.0 0.22 ± 2% perf-profile.children.cycles-pp.mutex_unlock
> 0.10 ± 5% -0.0 0.06 ± 17% perf-profile.children.cycles-pp.anon_pipe_buf_release
> 0.13 ± 2% -0.0 0.10 ± 9% perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore
> 0.17 ± 2% -0.0 0.14 ± 8% perf-profile.children.cycles-pp.perf_tp_event
> 0.08 ± 4% -0.0 0.05 ± 8% perf-profile.children.cycles-pp.__list_add_valid
> 0.10 -0.0 0.09 perf-profile.children.cycles-pp.finish_wait
> 0.14 +0.0 0.16 ± 3% perf-profile.children.cycles-pp.atime_needs_update
> 0.12 ± 4% +0.0 0.15 ± 2% perf-profile.children.cycles-pp.file_update_time
> 0.06 ± 6% +0.0 0.09 ± 7% perf-profile.children.cycles-pp.__rdgsbase_inactive
> 0.10 ± 6% +0.0 0.13 ± 5% perf-profile.children.cycles-pp.__wrgsbase_inactive
> 0.75 +0.0 0.79 perf-profile.children.cycles-pp.pick_next_task_fair
> 0.05 +0.0 0.09 ± 5% perf-profile.children.cycles-pp.pick_next_entity
> 0.19 ± 2% +0.0 0.23 ± 5% perf-profile.children.cycles-pp.down_read_killable
> 0.02 ±141% +0.0 0.06 ± 11% perf-profile.children.cycles-pp.perf_trace_sched_switch
> 0.05 +0.0 0.10 ± 6% perf-profile.children.cycles-pp.entry_SYSCALL_64_safe_stack
> 0.02 ± 99% +0.1 0.08 ± 6% perf-profile.children.cycles-pp.kmalloc_slab
> 0.14 ± 2% +0.1 0.20 perf-profile.children.cycles-pp.down_read
> 0.00 +0.1 0.06 ± 8% perf-profile.children.cycles-pp.resched_curr
> 0.02 ± 99% +0.1 0.08 ± 8% perf-profile.children.cycles-pp.perf_trace_sched_stat_runtime
> 0.16 ± 3% +0.1 0.21 ± 2% perf-profile.children.cycles-pp.mmput
> 0.00 +0.1 0.06 ± 9% perf-profile.children.cycles-pp.ktime_get_coarse_real_ts64
> 0.13 ± 2% +0.1 0.19 ± 6% perf-profile.children.cycles-pp.get_task_mm
> 0.00 +0.1 0.07 ± 7% perf-profile.children.cycles-pp.idr_find
> 0.24 ± 2% +0.1 0.31 ± 4% perf-profile.children.cycles-pp.__update_load_avg_se
> 0.02 ±141% +0.1 0.09 ± 10% perf-profile.children.cycles-pp.__calc_delta
> 0.66 +0.1 0.73 ± 2% perf-profile.children.cycles-pp.update_curr
> 0.04 ± 44% +0.1 0.12 ± 9% perf-profile.children.cycles-pp.memcg_slab_free_hook
> 0.00 +0.1 0.07 ± 18% perf-profile.children.cycles-pp.cpumask_next_and
> 0.00 +0.1 0.08 ± 10% perf-profile.children.cycles-pp.syscall_exit_to_user_mode_prepare
> 0.08 ± 4% +0.1 0.16 ± 10% perf-profile.children.cycles-pp.up_read
> 0.07 ± 11% +0.1 0.15 ± 8% perf-profile.children.cycles-pp.clockevents_program_event
> 0.13 +0.1 0.22 ± 3% perf-profile.children.cycles-pp.ttwu_do_wakeup
> 0.06 ± 6% +0.1 0.15 ± 9% perf-profile.children.cycles-pp.current_time
> 0.00 +0.1 0.09 ± 10% perf-profile.children.cycles-pp.check_stack_object
> 0.11 ± 4% +0.1 0.20 ± 4% perf-profile.children.cycles-pp.check_preempt_curr
> 0.15 ± 4% +0.1 0.26 ± 6% perf-profile.children.cycles-pp.os_xsave
> 0.12 ± 4% +0.1 0.23 ± 9% perf-profile.children.cycles-pp.syscall_enter_from_user_mode
> 0.16 ± 3% +0.1 0.27 ± 9% perf-profile.children.cycles-pp.reweight_entity
> 0.61 ± 2% +0.1 0.75 ± 2% perf-profile.children.cycles-pp.find_get_task_by_vpid
> 0.19 ± 5% +0.1 0.33 ± 6% perf-profile.children.cycles-pp.__radix_tree_lookup
> 0.10 ± 3% +0.2 0.25 ± 10% perf-profile.children.cycles-pp.__check_object_size
> 0.13 ± 3% +0.2 0.29 ± 9% perf-profile.children.cycles-pp.syscall_return_via_sysret
> 0.11 ± 6% +0.2 0.26 ± 11% perf-profile.children.cycles-pp.follow_huge_addr
> 0.37 ± 2% +0.2 0.53 ± 6% perf-profile.children.cycles-pp.mm_access
> 0.00 +0.2 0.17 ± 9% perf-profile.children.cycles-pp.check_preempt_wakeup
> 0.00 +0.2 0.17 ± 14% perf-profile.children.cycles-pp.put_prev_entity
> 0.15 ± 3% +0.2 0.39 ± 12% perf-profile.children.cycles-pp.pud_huge
> 0.14 ± 3% +0.2 0.39 ± 11% perf-profile.children.cycles-pp.mark_page_accessed
> 0.19 ± 3% +0.3 0.44 ± 9% perf-profile.children.cycles-pp.kfree
> 0.19 ± 3% +0.3 0.50 ± 12% perf-profile.children.cycles-pp.pmd_huge
> 0.31 ± 3% +0.3 0.65 ± 9% perf-profile.children.cycles-pp.__kmalloc
> 0.28 ± 3% +0.4 0.67 ± 10% perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack
> 0.26 ± 3% +0.4 0.70 ± 12% perf-profile.children.cycles-pp.vm_normal_page
> 0.28 ± 2% +0.5 0.73 ± 11% perf-profile.children.cycles-pp.folio_mark_accessed
> 0.40 ± 2% +0.5 0.86 ± 10% perf-profile.children.cycles-pp.__entry_text_start
> 0.77 ± 4% +0.5 1.24 ± 10% perf-profile.children.cycles-pp.stress_vm_rw
> 2.54 +0.6 3.10 ± 4% perf-profile.children.cycles-pp._raw_spin_lock
> 0.44 ± 3% +0.6 1.02 ± 10% perf-profile.children.cycles-pp.__import_iovec
> 0.46 ± 3% +0.6 1.05 ± 10% perf-profile.children.cycles-pp.import_iovec
> 0.57 ± 2% +0.7 1.26 ± 9% perf-profile.children.cycles-pp._copy_from_user
> 0.47 ± 3% +0.7 1.18 ± 11% perf-profile.children.cycles-pp.rcu_all_qs
> 1.72 +0.9 2.58 ± 6% perf-profile.children.cycles-pp.__cond_resched
> 0.75 ± 2% +1.0 1.71 ± 9% perf-profile.children.cycles-pp.iovec_from_user
> 0.00 +1.1 1.11 ± 16% perf-profile.children.cycles-pp.exit_to_user_mode_loop
> 0.98 ± 2% +1.1 2.10 ± 10% perf-profile.children.cycles-pp.__might_sleep
> 0.70 +1.1 1.84 ± 9% perf-profile.children.cycles-pp.exit_to_user_mode_prepare
> 0.76 ± 3% +1.2 1.95 ± 11% perf-profile.children.cycles-pp.follow_pud_mask
> 0.79 +1.3 2.06 ± 9% perf-profile.children.cycles-pp.syscall_exit_to_user_mode
> 0.93 ± 2% +1.3 2.22 ± 10% perf-profile.children.cycles-pp.follow_page_mask
> 1.30 ± 2% +1.5 2.80 ± 9% perf-profile.children.cycles-pp.__might_fault
> 1.03 ± 2% +1.6 2.67 ± 11% perf-profile.children.cycles-pp.follow_pmd_mask
> 2.83 +1.7 4.55 ± 7% perf-profile.children.cycles-pp.__might_resched
> 1.37 +1.9 3.26 ± 14% perf-profile.children.cycles-pp.unpin_user_pages
> 1.30 ± 2% +2.1 3.38 ± 14% perf-profile.children.cycles-pp.unpin_user_pages_dirty_lock
> 3.29 ± 2% +2.6 5.87 ± 11% perf-profile.children.cycles-pp.try_grab_page
> 29.19 +2.6 31.78 perf-profile.children.cycles-pp.copy_user_enhanced_fast_string
> 1.40 +3.0 4.42 ± 17% perf-profile.children.cycles-pp.mod_node_page_state
> 2.13 ± 2% +3.2 5.35 ± 14% perf-profile.children.cycles-pp.gup_put_folio
> 34.26 +6.2 40.45 ± 3% perf-profile.children.cycles-pp.__x64_sys_process_vm_readv
> 34.96 +6.7 41.64 ± 3% perf-profile.children.cycles-pp.process_vm_readv
> 8.05 +7.0 15.10 ± 8% perf-profile.children.cycles-pp.copyin
> 6.54 +7.1 13.60 ± 11% perf-profile.children.cycles-pp.follow_page_pte
> 10.06 +9.7 19.72 ± 8% perf-profile.children.cycles-pp.copy_page_from_iter
> 10.99 +13.2 24.22 ± 11% perf-profile.children.cycles-pp.__get_user_pages
> 11.04 +13.3 24.31 ± 11% perf-profile.children.cycles-pp.__get_user_pages_remote
> 77.15 +15.3 92.46 ± 2% perf-profile.children.cycles-pp.do_syscall_64
> 77.51 +15.4 92.94 ± 2% perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
> 17.18 ± 2% +20.4 37.56 ± 10% perf-profile.children.cycles-pp.__x64_sys_process_vm_writev
> 17.69 ± 2% +20.9 38.64 ± 10% perf-profile.children.cycles-pp.process_vm_writev
> 48.65 +24.3 72.98 ± 6% perf-profile.children.cycles-pp.process_vm_rw_single_vec
> 50.39 +25.4 75.74 ± 6% perf-profile.children.cycles-pp.process_vm_rw_core
> 51.40 +26.5 77.94 ± 6% perf-profile.children.cycles-pp.process_vm_rw
> 7.23 -6.3 0.97 ±125% perf-profile.self.cycles-pp.update_cfs_group
> 6.42 -5.6 0.78 ±142% perf-profile.self.cycles-pp.mwait_idle_with_hints
> 4.82 -4.2 0.67 ± 85% perf-profile.self.cycles-pp.update_load_avg
> 1.78 ± 2% -1.5 0.29 ±137% perf-profile.self.cycles-pp.available_idle_cpu
> 0.96 -0.5 0.42 ± 26% perf-profile.self.cycles-pp._raw_spin_lock_irqsave
> 0.98 ± 2% -0.5 0.45 ± 28% perf-profile.self.cycles-pp.__schedule
> 0.59 ± 2% -0.5 0.13 ± 78% perf-profile.self.cycles-pp.switch_mm_irqs_off
> 0.97 -0.4 0.61 ± 15% perf-profile.self.cycles-pp.stress_vm_child
> 0.45 ± 2% -0.3 0.14 ± 58% perf-profile.self.cycles-pp.update_rq_clock
> 0.58 -0.3 0.30 ± 22% perf-profile.self.cycles-pp.__switch_to_asm
> 0.58 -0.3 0.33 ± 17% perf-profile.self.cycles-pp.pipe_read
> 0.35 ± 3% -0.2 0.10 ± 59% perf-profile.self.cycles-pp.__wake_up_common
> 0.47 -0.2 0.24 ± 23% perf-profile.self.cycles-pp.___perf_sw_event
> 0.32 ± 2% -0.2 0.13 ± 39% perf-profile.self.cycles-pp.finish_task_switch
> 0.38 ± 2% -0.2 0.21 ± 20% perf-profile.self.cycles-pp.prepare_to_wait_event
> 0.25 ± 2% -0.2 0.08 ± 53% perf-profile.self.cycles-pp._find_next_bit
> 0.31 ± 3% -0.2 0.14 ± 27% perf-profile.self.cycles-pp.enqueue_entity
> 0.34 ± 15% -0.2 0.18 ± 12% perf-profile.self.cycles-pp.read
> 0.26 ± 2% -0.2 0.11 ± 20% perf-profile.self.cycles-pp.try_to_wake_up
> 0.29 ± 3% -0.2 0.13 ± 30% perf-profile.self.cycles-pp.prepare_task_switch
> 0.45 ± 2% -0.1 0.31 ± 9% perf-profile.self.cycles-pp.mutex_lock
> 0.26 -0.1 0.16 ± 14% perf-profile.self.cycles-pp.apparmor_file_permission
> 0.13 ± 2% -0.1 0.03 ±103% perf-profile.self.cycles-pp.perf_trace_sched_wakeup_template
> 0.35 -0.1 0.26 ± 11% perf-profile.self.cycles-pp.__update_load_avg_cfs_rq
> 0.16 ± 3% -0.1 0.08 ± 22% perf-profile.self.cycles-pp.dequeue_entity
> 0.56 -0.1 0.48 ± 5% perf-profile.self.cycles-pp.__switch_to
> 0.15 ± 2% -0.1 0.08 ± 37% perf-profile.self.cycles-pp.vmacache_find
> 0.18 ± 2% -0.1 0.11 ± 25% perf-profile.self.cycles-pp.select_idle_sibling
> 0.19 ± 3% -0.1 0.13 ± 10% perf-profile.self.cycles-pp.native_sched_clock
> 0.13 ± 3% -0.1 0.07 ± 17% perf-profile.self.cycles-pp.security_file_permission
> 0.19 -0.1 0.13 ± 18% perf-profile.self.cycles-pp.enqueue_task_fair
> 0.35 ± 2% -0.1 0.30 ± 8% perf-profile.self.cycles-pp.update_curr
> 0.15 ± 2% -0.1 0.10 ± 12% perf-profile.self.cycles-pp.dequeue_task_fair
> 0.26 -0.0 0.21 ± 2% perf-profile.self.cycles-pp.mutex_unlock
> 0.38 -0.0 0.34 ± 3% perf-profile.self.cycles-pp.find_get_task_by_vpid
> 0.09 ± 4% -0.0 0.06 ± 13% perf-profile.self.cycles-pp.anon_pipe_buf_release
> 0.11 ± 4% -0.0 0.08 ± 10% perf-profile.self.cycles-pp.atime_needs_update
> 0.21 ± 2% -0.0 0.19 ± 3% perf-profile.self.cycles-pp.vfs_read
> 0.17 ± 2% -0.0 0.14 ± 3% perf-profile.self.cycles-pp.switch_fpu_return
> 0.11 ± 4% -0.0 0.09 ± 10% perf-profile.self.cycles-pp.aa_file_perm
> 0.08 ± 6% -0.0 0.06 ± 13% perf-profile.self.cycles-pp.select_task_rq
> 0.05 +0.0 0.06 perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore
> 0.06 +0.0 0.07 perf-profile.self.cycles-pp.set_next_entity
> 0.07 ± 5% +0.0 0.09 perf-profile.self.cycles-pp.get_task_mm
> 0.06 ± 9% +0.0 0.08 perf-profile.self.cycles-pp.__get_user_pages_remote
> 0.06 ± 6% +0.0 0.09 ± 5% perf-profile.self.cycles-pp.__rdgsbase_inactive
> 0.10 ± 5% +0.0 0.13 ± 4% perf-profile.self.cycles-pp.__wrgsbase_inactive
> 0.11 +0.0 0.15 ± 2% perf-profile.self.cycles-pp.pick_next_task_fair
> 0.09 ± 9% +0.0 0.13 ± 8% perf-profile.self.cycles-pp.ktime_get
> 0.03 ± 70% +0.0 0.08 ± 6% perf-profile.self.cycles-pp.pick_next_entity
> 0.08 ± 6% +0.1 0.13 ± 7% perf-profile.self.cycles-pp.vfs_write
> 0.00 +0.1 0.06 ± 9% perf-profile.self.cycles-pp.resched_curr
> 0.01 ±223% +0.1 0.06 ± 11% perf-profile.self.cycles-pp.perf_trace_sched_switch
> 0.00 +0.1 0.06 ± 8% perf-profile.self.cycles-pp.put_prev_entity
> 0.00 +0.1 0.06 ± 8% perf-profile.self.cycles-pp.syscall_exit_to_user_mode_prepare
> 0.00 +0.1 0.06 ± 8% perf-profile.self.cycles-pp.idr_find
> 0.22 ± 2% +0.1 0.28 ± 4% perf-profile.self.cycles-pp.__update_load_avg_se
> 0.00 +0.1 0.06 ± 11% perf-profile.self.cycles-pp.ksys_write
> 0.00 +0.1 0.06 ± 14% perf-profile.self.cycles-pp.__wake_up_common_lock
> 0.00 +0.1 0.06 ± 7% perf-profile.self.cycles-pp.kmalloc_slab
> 0.10 ± 6% +0.1 0.16 ± 6% perf-profile.self.cycles-pp.write
> 0.00 +0.1 0.07 ± 15% perf-profile.self.cycles-pp.check_preempt_wakeup
> 0.08 ± 6% +0.1 0.15 ± 9% perf-profile.self.cycles-pp.up_read
> 0.01 ±223% +0.1 0.08 ± 12% perf-profile.self.cycles-pp.perf_trace_sched_stat_runtime
> 0.01 ±223% +0.1 0.08 ± 10% perf-profile.self.cycles-pp.__calc_delta
> 0.00 +0.1 0.08 ± 10% perf-profile.self.cycles-pp.check_stack_object
> 0.00 +0.1 0.08 ± 20% perf-profile.self.cycles-pp.exit_to_user_mode_loop
> 0.02 ±141% +0.1 0.09 ± 10% perf-profile.self.cycles-pp.new_sync_write
> 0.02 ±141% +0.1 0.09 ± 10% perf-profile.self.cycles-pp.entry_SYSCALL_64_safe_stack
> 0.06 ± 8% +0.1 0.14 ± 11% perf-profile.self.cycles-pp.follow_huge_addr
> 0.10 ± 4% +0.1 0.19 ± 10% perf-profile.self.cycles-pp.syscall_enter_from_user_mode
> 0.00 +0.1 0.09 ± 12% perf-profile.self.cycles-pp.current_time
> 0.06 +0.1 0.15 ± 11% perf-profile.self.cycles-pp.__import_iovec
> 0.05 ± 8% +0.1 0.14 ± 13% perf-profile.self.cycles-pp.__check_object_size
> 0.03 ± 70% +0.1 0.14 ± 15% perf-profile.self.cycles-pp.syscall_exit_to_user_mode
> 0.19 ± 3% +0.1 0.30 ± 5% perf-profile.self.cycles-pp.process_vm_readv
> 0.15 ± 3% +0.1 0.25 ± 5% perf-profile.self.cycles-pp.os_xsave
> 0.00 +0.1 0.11 ± 9% perf-profile.self.cycles-pp.memcg_slab_free_hook
> 0.07 ± 5% +0.1 0.18 ± 10% perf-profile.self.cycles-pp._copy_from_user
> 0.15 ± 2% +0.1 0.26 ± 6% perf-profile.self.cycles-pp.pipe_write
> 0.05 +0.1 0.16 ± 12% perf-profile.self.cycles-pp.exit_to_user_mode_prepare
> 0.12 ± 3% +0.1 0.24 ± 8% perf-profile.self.cycles-pp.__entry_text_start
> 0.00 +0.1 0.12 ± 14% perf-profile.self.cycles-pp.schedule
> 0.14 ± 12% +0.1 0.26 ± 5% perf-profile.self.cycles-pp.process_vm_rw
> 0.38 +0.1 0.51 ± 6% perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe
> 0.19 ± 7% +0.1 0.32 ± 6% perf-profile.self.cycles-pp.__radix_tree_lookup
> 0.09 ± 4% +0.1 0.23 ± 10% perf-profile.self.cycles-pp.iovec_from_user
> 0.09 +0.1 0.24 ± 11% perf-profile.self.cycles-pp.mark_page_accessed
> 0.14 ± 3% +0.2 0.29 ± 9% perf-profile.self.cycles-pp.process_vm_rw_core
> 0.13 ± 2% +0.2 0.28 ± 9% perf-profile.self.cycles-pp.syscall_return_via_sysret
> 0.13 ± 2% +0.2 0.29 ± 10% perf-profile.self.cycles-pp.process_vm_writev
> 0.10 ± 3% +0.2 0.26 ± 13% perf-profile.self.cycles-pp.pud_huge
> 0.09 ± 5% +0.2 0.26 ± 13% perf-profile.self.cycles-pp.pmd_huge
> 0.14 ± 3% +0.2 0.31 ± 11% perf-profile.self.cycles-pp.copyout
> 0.14 ± 4% +0.2 0.31 ± 10% perf-profile.self.cycles-pp.kfree
> 0.17 ± 3% +0.2 0.35 ± 9% perf-profile.self.cycles-pp.do_syscall_64
> 0.18 ± 3% +0.2 0.36 ± 9% perf-profile.self.cycles-pp.__kmalloc
> 0.18 ± 2% +0.3 0.45 ± 10% perf-profile.self.cycles-pp.copyin
> 0.24 ± 3% +0.3 0.50 ± 9% perf-profile.self.cycles-pp.__might_fault
> 0.11 ± 5% +0.3 0.41 ± 22% perf-profile.self.cycles-pp.ksys_read
> 0.30 ± 3% +0.3 0.65 ± 12% perf-profile.self.cycles-pp.unpin_user_pages
> 0.22 ± 3% +0.4 0.58 ± 12% perf-profile.self.cycles-pp.vm_normal_page
> 0.26 ± 4% +0.4 0.62 ± 11% perf-profile.self.cycles-pp.rcu_all_qs
> 0.28 ± 2% +0.4 0.65 ± 10% perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack
> 0.23 ± 3% +0.4 0.61 ± 12% perf-profile.self.cycles-pp.folio_mark_accessed
> 0.28 ± 4% +0.5 0.73 ± 13% perf-profile.self.cycles-pp.unpin_user_pages_dirty_lock
> 0.67 ± 4% +0.5 1.15 ± 12% perf-profile.self.cycles-pp.stress_vm_rw
> 0.56 ± 2% +0.5 1.06 ± 8% perf-profile.self.cycles-pp.process_vm_rw_single_vec
> 0.91 +0.6 1.55 ± 8% perf-profile.self.cycles-pp.__cond_resched
> 0.81 ± 2% +0.9 1.72 ± 10% perf-profile.self.cycles-pp.__might_sleep
> 0.61 ± 3% +0.9 1.55 ± 11% perf-profile.self.cycles-pp.follow_pud_mask
> 1.94 +0.9 2.89 ± 7% perf-profile.self.cycles-pp._raw_spin_lock
> 1.60 +1.0 2.57 ± 7% perf-profile.self.cycles-pp.copy_page_to_iter
> 2.56 ± 2% +1.0 3.61 ± 7% perf-profile.self.cycles-pp.try_grab_page
> 0.88 ± 2% +1.1 1.98 ± 10% perf-profile.self.cycles-pp.copy_page_from_iter
> 0.82 ± 3% +1.1 1.95 ± 11% perf-profile.self.cycles-pp.follow_page_mask
> 2.60 +1.4 3.98 ± 6% perf-profile.self.cycles-pp.__might_resched
> 0.88 ± 2% +1.4 2.27 ± 11% perf-profile.self.cycles-pp.follow_pmd_mask
> 0.88 ± 2% +1.4 2.28 ± 11% perf-profile.self.cycles-pp.__get_user_pages
> 1.43 ± 2% +1.7 3.15 ± 12% perf-profile.self.cycles-pp.gup_put_folio
> 1.50 ± 3% +2.3 3.79 ± 11% perf-profile.self.cycles-pp.follow_page_pte
> 28.89 +2.5 31.42 perf-profile.self.cycles-pp.copy_user_enhanced_fast_string
> 1.26 +2.8 4.04 ± 18% perf-profile.self.cycles-pp.mod_node_page_state
>
>
>
>
>
> 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.
>
>
next prev parent reply other threads:[~2022-07-09 16:14 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-19 12:04 [PATCH v4 0/7] sched/fair: improve scan efficiency of SIS Abel Wu
2022-06-19 12:04 ` [PATCH v4 1/7] sched/fair: default to false in test_idle_cores Abel Wu
2022-06-27 22:53 ` Josh Don
2022-06-28 3:39 ` Abel Wu
2022-06-19 12:04 ` [PATCH v4 2/7] sched/fair: remove redundant check in select_idle_smt Abel Wu
2022-06-27 23:17 ` Josh Don
2022-06-19 12:04 ` [PATCH v4 3/7] sched/fair: avoid double search on same cpu Abel Wu
2022-06-27 23:24 ` Josh Don
2022-06-19 12:04 ` [PATCH v4 4/7] sched/fair: remove useless check in select_idle_core Abel Wu
2022-06-27 23:42 ` Josh Don
2022-06-28 3:51 ` Abel Wu
2022-06-29 0:41 ` Josh Don
2022-06-19 12:04 ` [PATCH v4 5/7] sched/fair: skip SIS domain search if fully busy Abel Wu
2022-06-28 0:28 ` Josh Don
2022-06-28 6:53 ` Abel Wu
2022-06-29 1:11 ` Josh Don
2022-06-29 7:05 ` Abel Wu
2022-07-20 15:34 ` Gautham R. Shenoy
2022-08-15 9:49 ` Abel Wu
2022-06-19 12:04 ` [PATCH v4 6/7] sched/fair: skip busy cores in SIS search Abel Wu
2022-06-21 18:14 ` Chen Yu
2022-06-22 3:52 ` [External] " Abel Wu
2022-06-24 3:30 ` Chen Yu
2022-06-27 10:13 ` Abel Wu
2022-06-28 7:58 ` Abel Wu
2022-06-30 4:16 ` Chen Yu
2022-06-30 10:46 ` Abel Wu
2022-07-09 8:55 ` Chen Yu
2022-07-09 15:56 ` Abel Wu
2022-07-11 12:02 ` Chen Yu
2022-07-13 10:25 ` Abel Wu
2022-06-22 4:03 ` Abel Wu
2022-07-20 16:16 ` Gautham R. Shenoy
2022-08-15 9:49 ` Abel Wu
2022-06-19 12:04 ` [PATCH v4 7/7] sched/fair: de-entropy for SIS filter Abel Wu
2022-06-21 18:23 ` Chen Yu
2022-06-22 4:01 ` Abel Wu
2022-06-30 7:46 ` Abel Wu
2022-07-09 14:42 ` [sched/fair] 32fe13cd7a: phoronix-test-suite.fio.SequentialWrite.IO_uring.Yes.No.4KB.DefaultTestDirectory.mb_s -11.7% regression kernel test robot
2022-07-09 16:14 ` Abel Wu [this message]
2022-07-20 17:08 ` [PATCH v4 7/7] sched/fair: de-entropy for SIS filter Gautham R. Shenoy
2022-08-15 9:49 ` Abel Wu
2022-07-06 9:51 ` [PATCH v4 0/7] sched/fair: improve scan efficiency of SIS Abel Wu
2022-07-18 11:00 ` K Prateek Nayak
2022-08-15 13:59 ` Abel Wu
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