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FYI. Hello, kernel test robot noticed a -85.0% regression of filebench.sum_operations/s on: commit: 3062a738d73c866bf50df13bc47a2223b7b47d87 ("xfs: switch to multigrain timestamps") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master testcase: filebench test machine: 96 threads 2 sockets Intel(R) Xeon(R) Platinum 8260L CPU @ 2.40GHz (Cascade Lake) with 128G memory parameters: disk: 1HDD fs: xfs fs2: nfsv4 test: filemicro_rwritefsync.f cpufreq_governor: performance If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202409292200.d8132f52-oliver.sang@intel.com Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20240929/202409292200.d8132f52-oliver.sang@intel.com ========================================================================================= compiler/cpufreq_governor/disk/fs2/fs/kconfig/rootfs/tbox_group/test/testcase: gcc-12/performance/1HDD/nfsv4/xfs/x86_64-rhel-8.3/debian-12-x86_64-20240206.cgz/lkp-csl-2sp3/filemicro_rwritefsync.f/filebench commit: 42ba4ae657 ("Documentation: add a new file documenting multigrain timestamps") 3062a738d7 ("xfs: switch to multigrain timestamps") 42ba4ae65752b8cb 3062a738d73c866bf50df13bc47 ---------------- --------------------------- %stddev %change %stddev \ | \ 1.48 -13.5% 1.28 ± 5% iostat.cpu.iowait 4.302e+10 ± 2% -21.9% 3.361e+10 ± 2% cpuidle..time 2316977 -10.5% 2072537 cpuidle..usage 763659 ± 17% -33.4% 508644 ± 15% numa-numastat.node1.local_node 817625 ± 14% -30.4% 568838 ± 11% numa-numastat.node1.numa_hit 0.32 ± 12% -0.0 0.27 ± 6% perf-profile.children.cycles-pp.idle_cpu 0.31 ± 12% -0.0 0.26 ± 6% perf-profile.self.cycles-pp.idle_cpu 0.03 ± 88% +128.5% 0.08 ± 6% perf-sched.sch_delay.avg.ms.schedule_timeout.transaction_kthread.kthread.ret_from_fork 0.03 ± 88% +128.5% 0.08 ± 6% perf-sched.sch_delay.max.ms.schedule_timeout.transaction_kthread.kthread.ret_from_fork 523.13 -18.9% 424.32 ± 2% uptime.boot 48962 -18.9% 39691 ± 2% uptime.idle 208.10 ± 7% -67.4% 67.75 ± 52% numa-vmstat.node0.nr_mlock 816180 ± 14% -30.4% 567697 ± 11% numa-vmstat.node1.numa_hit 762194 ± 17% -33.4% 507502 ± 15% numa-vmstat.node1.numa_local 4823448 +10.8% 5344826 meminfo.Cached 244108 ± 6% -41.9% 141806 ± 29% meminfo.Dirty 2242446 +23.2% 2763206 meminfo.Inactive 1552268 +34.0% 2080318 meminfo.Inactive(file) 1.49 -0.2 1.29 ± 5% mpstat.cpu.all.iowait% 0.10 ± 2% +0.0 0.12 ± 4% mpstat.cpu.all.irq% 0.01 ± 4% +0.0 0.02 ± 2% mpstat.cpu.all.soft% 0.03 ± 2% +0.0 0.04 ± 2% mpstat.cpu.all.usr% 2603 ± 2% +16.6% 3036 ± 2% vmstat.io.bo 1.43 -13.6% 1.23 ± 7% vmstat.procs.b 2058 -14.7% 1756 vmstat.system.cs 5528 +21.9% 6738 ± 2% vmstat.system.in 2.10 -84.9% 0.32 ± 21% filebench.sum_bytes_mb/s 16385 -85.0% 2456 ± 13% filebench.sum_operations 273.04 -85.0% 40.94 ± 13% filebench.sum_operations/s 0.00 ± 14% +7.2e+05% 24.14 ± 13% filebench.sum_time_ms/op 273.00 -85.0% 41.00 ± 13% filebench.sum_writes/s 447.44 ± 2% -21.9% 349.26 ± 2% filebench.time.elapsed_time 447.44 ± 2% -21.9% 349.26 ± 2% filebench.time.elapsed_time.max 2343344 +207.9% 7214762 ± 9% filebench.time.file_system_outputs 8762 ± 2% -80.1% 1747 ± 6% filebench.time.voluntary_context_switches 269483 ± 6% -17.0% 223745 ± 8% sched_debug.cpu.clock.avg 269496 ± 6% -17.0% 223755 ± 8% sched_debug.cpu.clock.max 269474 ± 6% -17.0% 223735 ± 8% sched_debug.cpu.clock.min 268974 ± 6% -17.0% 223268 ± 8% sched_debug.cpu.clock_task.avg 269263 ± 6% -17.0% 223549 ± 8% sched_debug.cpu.clock_task.max 261595 ± 6% -17.5% 215932 ± 8% sched_debug.cpu.clock_task.min 8873 ± 4% -12.9% 7731 ± 5% sched_debug.cpu.curr->pid.max 1033 ± 3% -9.4% 936.02 ± 5% sched_debug.cpu.curr->pid.stddev 6038 ± 5% -27.7% 4366 ± 7% sched_debug.cpu.nr_switches.avg 977.53 ± 7% -17.2% 809.02 ± 8% sched_debug.cpu.nr_switches.min 269486 ± 6% -17.0% 223746 ± 8% sched_debug.cpu_clk 268914 ± 6% -17.0% 223174 ± 8% sched_debug.ktime 270076 ± 6% -16.9% 224334 ± 8% sched_debug.sched_clk 15708 -6.1% 14746 ± 2% proc-vmstat.nr_active_anon 817011 +120.3% 1799485 ± 9% proc-vmstat.nr_dirtied 61152 ± 6% -42.0% 35491 ± 30% proc-vmstat.nr_dirty 1206117 +10.8% 1335949 proc-vmstat.nr_file_pages 388315 +33.9% 519818 proc-vmstat.nr_inactive_file 18531 +1.0% 18721 proc-vmstat.nr_kernel_stack 16540 -3.8% 15909 proc-vmstat.nr_mapped 213.82 ± 4% -53.7% 99.00 ± 14% proc-vmstat.nr_mlock 25295 -6.6% 23625 proc-vmstat.nr_shmem 24447 -1.6% 24066 proc-vmstat.nr_slab_reclaimable 817011 +120.3% 1799485 ± 9% proc-vmstat.nr_written 15708 -6.1% 14746 ± 2% proc-vmstat.nr_zone_active_anon 388315 +33.9% 519818 proc-vmstat.nr_zone_inactive_file 139175 -19.7% 111713 ± 7% proc-vmstat.nr_zone_write_pending 1299984 -13.1% 1129235 proc-vmstat.numa_hit 1200290 -14.2% 1029746 proc-vmstat.numa_local 2273118 ± 2% -10.2% 2042156 proc-vmstat.pgalloc_normal 1203036 -18.6% 979402 ± 2% proc-vmstat.pgfault 1743917 ± 2% -13.4% 1509546 proc-vmstat.pgfree 1171848 -8.8% 1069087 proc-vmstat.pgpgout 56737 -18.4% 46304 ± 2% proc-vmstat.pgreuse 2.40 ± 2% +7.8% 2.59 ± 3% perf-stat.i.MPKI 49439015 +14.9% 56804851 ± 2% perf-stat.i.branch-instructions 4.34 +0.1 4.47 perf-stat.i.branch-miss-rate% 2634429 +20.4% 3171479 ± 2% perf-stat.i.branch-misses 5.07 ± 2% +0.4 5.46 ± 3% perf-stat.i.cache-miss-rate% 545304 ± 4% +22.0% 665397 ± 5% perf-stat.i.cache-misses 7567339 +11.9% 8468261 perf-stat.i.cache-references 2021 -15.8% 1702 perf-stat.i.context-switches 2.24 +3.8% 2.33 perf-stat.i.cpi 4.391e+08 +14.4% 5.022e+08 ± 2% perf-stat.i.cpu-cycles 102.06 +1.4% 103.52 perf-stat.i.cpu-migrations 2.401e+08 +15.0% 2.761e+08 ± 2% perf-stat.i.instructions 0.01 ± 6% -100.0% 0.00 perf-stat.i.metric.K/sec 5.33 +0.3 5.58 perf-stat.overall.branch-miss-rate% 7.21 ± 4% +0.7 7.86 ± 5% perf-stat.overall.cache-miss-rate% 49259568 +14.8% 56567448 ± 2% perf-stat.ps.branch-instructions 2625073 +20.3% 3158787 ± 2% perf-stat.ps.branch-misses 543464 ± 4% +22.0% 662949 ± 5% perf-stat.ps.cache-misses 7540908 +11.8% 8433223 perf-stat.ps.cache-references 2017 -15.8% 1697 perf-stat.ps.context-switches 4.373e+08 +14.3% 4.999e+08 ± 2% perf-stat.ps.cpu-cycles 101.82 +1.4% 103.21 perf-stat.ps.cpu-migrations 2.392e+08 +14.9% 2.75e+08 ± 2% perf-stat.ps.instructions 1.072e+11 -10.2% 9.632e+10 perf-stat.total.instructions Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki