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Date: Sun, 5 Sep 2021 21:59:33 +0800 From: kernel test robot <oliver.sang@...el.com> To: Andrew Morton <akpm@...ux-foundation.org> Cc: 0day robot <lkp@...el.com>, "Huang, Ying" <ying.huang@...el.com>, Yang Shi <shy828301@...il.com>, Zi Yan <ziy@...dia.com>, Michal Hocko <mhocko@...e.com>, Wei Xu <weixugc@...gle.com>, Oscar Salvador <osalvador@...e.de>, David Rientjes <rientjes@...gle.com>, Dan Williams <dan.j.williams@...el.com>, David Hildenbrand <david@...hat.com>, Greg Thelen <gthelen@...gle.com>, Keith Busch <kbusch@...nel.org>, Yang Shi <yang.shi@...ux.alibaba.com>, Andrew Morton <akpm@...ux-foundation.org>, LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org, feng.tang@...el.com, zhengjun.xing@...ux.intel.com, dave.hansen@...ux.intel.com, linux-mm@...ck.org, mm-commits@...r.kernel.org, torvalds@...ux-foundation.org Subject: [mm/migrate] 9eeb73028c: stress-ng.memhotplug.ops_per_sec -53.8% regression Greeting, FYI, we noticed a -53.8% regression of stress-ng.memhotplug.ops_per_sec due to commit: commit: 9eeb73028cfb54eb06efe87c50cc014d3f1ff43e ("[patch 174/212] mm/migrate: update node demotion order on hotplug events") url: https://github.com/0day-ci/linux/commits/Andrew-Morton/ia64-fix-typo-in-a-comment/20210903-065028 in testcase: stress-ng on test machine: 96 threads 2 sockets Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 192G memory with following parameters: nr_threads: 10% disk: 1HDD testtime: 60s fs: ext4 class: os test: memhotplug cpufreq_governor: performance ucode: 0x5003006 If you fix the issue, kindly add following tag Reported-by: kernel test robot <oliver.sang@...el.com> Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests 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 bin/lkp run generated-yaml-file ========================================================================================= class/compiler/cpufreq_governor/disk/fs/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime/ucode: os/gcc-9/performance/1HDD/ext4/x86_64-rhel-8.3/10%/debian-10.4-x86_64-20200603.cgz/lkp-csl-2sp5/memhotplug/stress-ng/60s/0x5003006 commit: 603f5ce25c ("mm/numa: automatically generate node migration order") 9eeb73028c ("mm/migrate: update node demotion order on hotplug events") 603f5ce25c452baf 9eeb73028cfb54eb06efe87c50c ---------------- --------------------------- %stddev %change %stddev \ | \ 2638 -53.7% 1221 stress-ng.memhotplug.ops 43.89 -53.8% 20.28 stress-ng.memhotplug.ops_per_sec 40637 ± 2% -61.5% 15654 ± 4% stress-ng.time.involuntary_context_switches 91.17 -50.6% 45.00 stress-ng.time.percent_of_cpu_this_job_got 57.11 -50.3% 28.40 stress-ng.time.system_time 1075917 -36.4% 684753 cpuidle..usage 0.92 -0.5 0.43 ± 2% mpstat.cpu.all.sys% 7183 ± 3% +17.9% 8467 ± 8% numa-vmstat.node1.nr_kernel_stack 13042 ± 10% -34.2% 8577 ± 11% softirqs.CPU0.SCHED 17047 +5.8% 18036 proc-vmstat.nr_kernel_stack 1.218e+09 ± 2% -54.3% 5.564e+08 ± 3% proc-vmstat.pgfree 766.67 ± 5% +12.2% 860.50 ± 3% slabinfo.kmalloc-cg-32.active_objs 7462 ± 7% +13.3% 8458 ± 4% slabinfo.kmalloc-cg-8.active_objs 25595 ± 2% -40.0% 15361 vmstat.system.cs 7186 -22.4% 5577 vmstat.system.in 1422 ± 8% -34.0% 939.50 ± 43% numa-meminfo.node0.Active(anon) 7183 ± 3% +17.9% 8467 ± 8% numa-meminfo.node1.KernelStack 835236 ± 12% +23.0% 1027326 ± 11% numa-meminfo.node1.MemUsed 41.67 -48.8% 21.33 ± 3% turbostat.Avg_MHz 1.42 ± 2% -0.6 0.83 ± 2% turbostat.Busy% 2937 -12.3% 2574 turbostat.Bzy_MHz 51129 ± 15% -34.7% 33365 ± 10% turbostat.C1 0.10 ± 4% -0.0 0.07 ± 14% turbostat.C1% 161038 -53.8% 74435 turbostat.C1E 0.82 -0.4 0.39 turbostat.C1E% 837765 -33.9% 553856 turbostat.C6 15.14 -28.8% 10.78 ± 3% turbostat.CPU%c1 455267 ± 2% -23.9% 346620 ± 2% turbostat.IRQ 112.21 -7.7% 103.57 turbostat.PkgWatt 84.04 -4.3% 80.40 turbostat.RAMWatt 33885 ± 6% -24.2% 25673 interrupts.CAL:Function_call_interrupts 6313 ± 8% -75.6% 1541 ± 19% interrupts.CPU0.CAL:Function_call_interrupts 30982 ± 16% -55.4% 13832 ± 5% interrupts.CPU0.LOC:Local_timer_interrupts 270.83 ± 18% -79.5% 55.50 ± 21% interrupts.CPU0.RES:Rescheduling_interrupts 2401 ± 25% -76.3% 568.50 ± 21% interrupts.CPU1.CAL:Function_call_interrupts 21139 ± 23% -56.0% 9299 ± 27% interrupts.CPU1.LOC:Local_timer_interrupts 108.33 ± 18% -81.1% 20.50 ± 38% interrupts.CPU1.RES:Rescheduling_interrupts 863.50 ± 24% -59.7% 348.17 ± 34% interrupts.CPU2.CAL:Function_call_interrupts 98.00 ± 35% -70.9% 28.50 ± 86% interrupts.CPU2.RES:Rescheduling_interrupts 1504 ± 29% +168.4% 4037 ± 50% interrupts.CPU22.LOC:Local_timer_interrupts 12932 ± 21% -69.8% 3904 ± 41% interrupts.CPU5.LOC:Local_timer_interrupts 77.17 ± 65% -85.1% 11.50 ± 49% interrupts.CPU5.RES:Rescheduling_interrupts 6555 ± 33% -45.9% 3549 ± 58% interrupts.CPU54.LOC:Local_timer_interrupts 87.33 ± 31% -74.6% 22.17 ± 60% interrupts.CPU58.RES:Rescheduling_interrupts 76.17 ± 24% -80.7% 14.67 ± 39% interrupts.CPU59.RES:Rescheduling_interrupts 76.17 ± 24% -72.4% 21.00 ± 62% interrupts.CPU63.RES:Rescheduling_interrupts 6038 ± 34% -67.1% 1984 ± 40% interrupts.CPU66.LOC:Local_timer_interrupts 7942 ± 37% -55.8% 3513 ± 70% interrupts.CPU7.LOC:Local_timer_interrupts 428264 -22.2% 333008 interrupts.LOC:Local_timer_interrupts 3123 ± 8% -53.8% 1444 ± 10% interrupts.RES:Rescheduling_interrupts stress-ng.memhotplug.ops 3000 +--------------------------------------------------------------------+ | .+ .+ +. +. | 2500 |.++.++.++.++ +.++.++.++.++.++.++ +.+ ++.++.+ ++.+ | | | | | 2000 |-+ | | | 1500 |-+ | | OO OO OO OO O OO OO OO OO OO OO OO O OO OO O OO O O O OO OO O| 1000 |-+ O O O O | | | | | 500 |-+ | | O O | 0 +--------------------------------------------------------------------+ stress-ng.memhotplug.ops_per_sec 50 +----------------------------------------------------------------------+ 45 |-+ .+ .+ +. +. | |.++.++.++.++ +.+.++.++.++.++.++.+ +.+ ++.++.+ ++.+ | 40 |-+ | 35 |-+ | | | 30 |-+ | 25 |-+ | 20 |-OO OO OO OO O O OO OO OO OO OO O OO O OO OO O O O O OO OO OO | | O O OO O | 15 |-+ | 10 |-+ | | | 5 |-+ O O | 0 +----------------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample 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. --- 0DAY/LKP+ Test Infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/lkp@lists.01.org Intel Corporation Thanks, Oliver Sang View attachment "config-5.14.0-00174-g9eeb73028cfb" of type "text/plain" (175541 bytes) View attachment "job-script" of type "text/plain" (8277 bytes) View attachment "job.yaml" of type "text/plain" (5578 bytes) View attachment "reproduce" of type "text/plain" (538 bytes)
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