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Message-ID: <202510020917.2ead7cfe-lkp@intel.com>
Date: Thu, 2 Oct 2025 16:11:29 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Dave Chinner <dchinner@...hat.com>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, <linux-kernel@...r.kernel.org>,
Carlos Maiolino <cem@...nel.org>, Jan Kara <jack@...e.cz>, Christoph Hellwig
<hch@....de>, <linux-xfs@...r.kernel.org>, <oliver.sang@...el.com>
Subject: [linus:master] [xfs] c91d38b57f: stress-ng.chown.ops_per_sec 70.2%
improvement
Hello,
kernel test robot noticed a 70.2% improvement of stress-ng.chown.ops_per_sec on:
commit: c91d38b57f2c4784d885c874b2a1234a01361afd ("xfs: rework datasync tracking and execution")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
testcase: stress-ng
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 192 threads 2 sockets Intel(R) Xeon(R) Platinum 8468V CPU @ 2.4GHz (Sapphire Rapids) with 384G memory
parameters:
nr_threads: 100%
disk: 1SSD
testtime: 60s
fs: xfs
test: chown
cpufreq_governor: performance
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20251002/202510020917.2ead7cfe-lkp@intel.com
=========================================================================================
compiler/cpufreq_governor/disk/fs/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
gcc-14/performance/1SSD/xfs/x86_64-rhel-9.4/100%/debian-13-x86_64-20250902.cgz/igk-spr-2sp1/chown/stress-ng/60s
commit:
bc7d684fea ("xfs: rearrange code in xfs_inode_item_precommit")
c91d38b57f ("xfs: rework datasync tracking and execution")
bc7d684fea18cc48 c91d38b57f2c4784d885c874b2a
---------------- ---------------------------
%stddev %change %stddev
\ | \
21446 -15.8% 18048 uptime.idle
1.152e+10 -29.2% 8.152e+09 ± 2% cpuidle..time
8263083 ± 5% +11.3% 9194591 ± 2% cpuidle..usage
98.28 -26.1% 72.66 ± 2% iostat.cpu.idle
1.35 ± 9% +1890.7% 26.82 ± 5% iostat.cpu.system
19060 ± 85% +613.5% 135997 ± 28% numa-meminfo.node0.Shmem
297720 ± 7% +43.6% 427508 ± 8% numa-meminfo.node1.Shmem
4765 ± 85% +613.7% 34012 ± 28% numa-vmstat.node0.nr_shmem
74477 ± 7% +43.6% 106962 ± 8% numa-vmstat.node1.nr_shmem
1004889 +25.4% 1260516 meminfo.Active
1004873 +25.4% 1260499 meminfo.Active(anon)
119627 ± 2% +81.8% 217452 ± 2% meminfo.Mapped
316668 ± 4% +77.8% 563129 meminfo.Shmem
87.17 ± 15% +151.4% 219.17 ± 7% perf-c2c.DRAM.local
1506 ± 9% +105.9% 3102 ± 2% perf-c2c.DRAM.remote
1846 ± 8% +74.6% 3225 ± 3% perf-c2c.HITM.local
967.83 ± 10% +111.5% 2046 ± 3% perf-c2c.HITM.remote
2814 ± 3% +87.3% 5271 ± 2% perf-c2c.HITM.total
6.91 ± 6% -40.1% 4.14 perf-sched.total_wait_and_delay.average.ms
428372 ± 5% +71.9% 736472 perf-sched.total_wait_and_delay.count.ms
6.90 ± 6% -40.2% 4.13 perf-sched.total_wait_time.average.ms
6.91 ± 6% -40.1% 4.14 perf-sched.wait_and_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
428372 ± 5% +71.9% 736472 perf-sched.wait_and_delay.count.[unknown].[unknown].[unknown].[unknown].[unknown]
6.90 ± 6% -40.2% 4.13 perf-sched.wait_time.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
702197 ± 6% +70.2% 1195115 stress-ng.chown.ops
11705 ± 6% +70.2% 19923 stress-ng.chown.ops_per_sec
181.50 ± 22% +1974.8% 3765 ± 4% stress-ng.time.involuntary_context_switches
279.00 ± 4% +1929.8% 5663 ± 5% stress-ng.time.percent_of_cpu_this_job_got
166.63 ± 4% +1941.2% 3401 ± 5% stress-ng.time.system_time
5209159 ± 7% +80.3% 9389854 stress-ng.time.voluntary_context_switches
98.26 -26.4 71.83 ± 2% mpstat.cpu.all.idle%
0.13 ± 5% +0.3 0.43 ± 5% mpstat.cpu.all.irq%
0.07 ± 11% +0.0 0.11 mpstat.cpu.all.soft%
1.15 ± 11% +26.0 27.11 ± 6% mpstat.cpu.all.sys%
0.38 ± 5% +0.1 0.53 ± 2% mpstat.cpu.all.usr%
1.00 +1533.3% 16.33 ± 86% mpstat.max_utilization.seconds
3.40 ± 6% +950.6% 35.70 ± 6% mpstat.max_utilization_pct
77.00 +1065.8% 897.67 ± 4% turbostat.Avg_MHz
2.56 ± 3% +28.4 30.96 ± 4% turbostat.Busy%
3008 -3.6% 2900 turbostat.Bzy_MHz
0.15 ± 25% +2.2 2.32 ± 2% turbostat.C1%
11.82 ± 8% -4.1 7.67 turbostat.C1E%
85.55 -26.4 59.13 ± 2% turbostat.C6%
77.00 ± 6% -40.5% 45.80 ± 4% turbostat.CPU%c1
17.96 ± 28% -88.6% 2.05 ± 8% turbostat.CPU%c6
0.53 ± 2% -43.3% 0.30 turbostat.IPC
4796749 ± 5% +186.9% 13763385 ± 2% turbostat.IRQ
268338 ± 2% +636.9% 1977304 ± 5% turbostat.NMI
0.27 ± 13% -30.6% 0.18 ± 18% turbostat.Pkg%pc6
50.33 +8.6% 54.67 turbostat.PkgTmp
399.48 +17.5% 469.39 turbostat.PkgWatt
9.47 +3.3% 9.79 turbostat.RAMWatt
251227 +25.5% 315208 proc-vmstat.nr_active_anon
172983 +1.4% 175383 proc-vmstat.nr_anon_pages
1003874 +6.1% 1065584 proc-vmstat.nr_file_pages
29851 +81.4% 54161 ± 3% proc-vmstat.nr_mapped
79196 ± 4% +77.9% 140909 proc-vmstat.nr_shmem
119037 +1.8% 121217 proc-vmstat.nr_slab_unreclaimable
251227 +25.5% 315208 proc-vmstat.nr_zone_active_anon
878478 +13.7% 998673 proc-vmstat.numa_hit
679877 +17.7% 800107 proc-vmstat.numa_local
10806 ±116% +199.2% 32333 ± 31% proc-vmstat.numa_pages_migrated
932088 +13.4% 1057269 proc-vmstat.pgalloc_normal
498583 ± 2% +6.7% 532123 ± 2% proc-vmstat.pgfault
797828 +3.6% 826753 proc-vmstat.pgfree
10806 ±116% +199.2% 32333 ± 31% proc-vmstat.pgmigrate_success
2667340 ± 6% -13.3% 2311308 ± 2% proc-vmstat.pgpgout
27316 ± 5% +19.9% 32752 ± 11% proc-vmstat.pgreuse
3.06 ± 13% -71.8% 0.86 ± 4% perf-stat.i.MPKI
1.695e+09 +535.8% 1.078e+10 ± 3% perf-stat.i.branch-instructions
2.07 ± 3% -1.5 0.58 ± 3% perf-stat.i.branch-miss-rate%
45649257 ± 2% +32.1% 60312544 perf-stat.i.branch-misses
20782898 ± 13% +118.8% 45464342 perf-stat.i.cache-misses
74939994 ± 3% +196.9% 2.225e+08 perf-stat.i.cache-references
211956 ± 7% +63.6% 346733 perf-stat.i.context-switches
2.09 ± 2% +55.1% 3.24 perf-stat.i.cpi
1.487e+10 ± 2% +1070.8% 1.741e+11 ± 4% perf-stat.i.cpu-cycles
633.37 ± 12% +397.0% 3147 ± 8% perf-stat.i.cpu-migrations
756.33 ± 16% +409.7% 3855 ± 5% perf-stat.i.cycles-between-cache-misses
8.097e+09 +561.3% 5.354e+10 ± 3% perf-stat.i.instructions
0.53 ± 3% -40.3% 0.31 perf-stat.i.ipc
0.99 ± 12% +84.4% 1.83 perf-stat.i.metric.K/sec
6687 ± 3% +9.2% 7305 ± 3% perf-stat.i.minor-faults
6687 ± 3% +9.2% 7305 ± 3% perf-stat.i.page-faults
2.57 ± 14% -66.9% 0.85 ± 4% perf-stat.overall.MPKI
2.68 ± 2% -2.1 0.56 ± 3% perf-stat.overall.branch-miss-rate%
1.84 ± 3% +76.9% 3.25 perf-stat.overall.cpi
730.19 ± 14% +425.1% 3833 ± 5% perf-stat.overall.cycles-between-cache-misses
0.54 ± 3% -43.5% 0.31 perf-stat.overall.ipc
1.668e+09 +535.6% 1.06e+10 ± 3% perf-stat.ps.branch-instructions
44770981 ± 2% +31.7% 58956996 perf-stat.ps.branch-misses
20427788 ± 13% +118.8% 44692670 perf-stat.ps.cache-misses
73770990 ± 3% +196.6% 2.188e+08 perf-stat.ps.cache-references
208371 ± 7% +63.5% 340716 perf-stat.ps.context-switches
1.463e+10 ± 2% +1070.4% 1.713e+11 ± 4% perf-stat.ps.cpu-cycles
623.35 ± 12% +396.3% 3093 ± 8% perf-stat.ps.cpu-migrations
7.964e+09 +561.1% 5.265e+10 ± 3% perf-stat.ps.instructions
6538 ± 3% +8.3% 7081 ± 3% perf-stat.ps.minor-faults
6538 ± 3% +8.3% 7081 ± 3% perf-stat.ps.page-faults
4.839e+11 +561.9% 3.203e+12 ± 4% perf-stat.total.instructions
5485 ± 39% +9425.4% 522524 ± 9% sched_debug.cfs_rq:/.avg_vruntime.avg
70276 ± 23% +1083.8% 831952 ± 3% sched_debug.cfs_rq:/.avg_vruntime.max
613.05 ± 40% +15770.4% 97293 ± 20% sched_debug.cfs_rq:/.avg_vruntime.min
7853 ± 18% +1329.3% 112241 ± 10% sched_debug.cfs_rq:/.avg_vruntime.stddev
0.05 ± 21% +283.3% 0.21 ± 12% sched_debug.cfs_rq:/.h_nr_queued.avg
1.00 +66.7% 1.67 ± 14% sched_debug.cfs_rq:/.h_nr_queued.max
0.22 ± 10% +80.1% 0.40 ± 5% sched_debug.cfs_rq:/.h_nr_queued.stddev
0.05 ± 21% +250.0% 0.19 ± 12% sched_debug.cfs_rq:/.h_nr_runnable.avg
0.22 ± 10% +60.3% 0.36 ± 5% sched_debug.cfs_rq:/.h_nr_runnable.stddev
0.00 +1.9e+12% 19199 ± 38% sched_debug.cfs_rq:/.left_deadline.avg
0.00 +6e+13% 598730 ± 12% sched_debug.cfs_rq:/.left_deadline.max
0.00 +1.9e+12% 19199 ± 38% sched_debug.cfs_rq:/.left_vruntime.avg
0.00 +6e+13% 598716 ± 12% sched_debug.cfs_rq:/.left_vruntime.max
41172 ±215% +4030.9% 1700764 ± 36% sched_debug.cfs_rq:/.load.avg
7612936 ±222% +499.5% 45642610 sched_debug.cfs_rq:/.load.max
551304 ±220% +1439.7% 8488365 ± 16% sched_debug.cfs_rq:/.load.stddev
40.23 ± 28% +3177.8% 1318 ± 7% sched_debug.cfs_rq:/.load_avg.avg
847.08 ± 30% +519.5% 5248 ± 9% sched_debug.cfs_rq:/.load_avg.max
140.26 ± 32% +812.7% 1280 ± 4% sched_debug.cfs_rq:/.load_avg.stddev
5485 ± 39% +9425.4% 522524 ± 9% sched_debug.cfs_rq:/.min_vruntime.avg
70276 ± 23% +1083.8% 831952 ± 3% sched_debug.cfs_rq:/.min_vruntime.max
613.05 ± 40% +15770.4% 97293 ± 20% sched_debug.cfs_rq:/.min_vruntime.min
7853 ± 18% +1329.3% 112241 ± 10% sched_debug.cfs_rq:/.min_vruntime.stddev
0.05 ± 21% +284.1% 0.21 ± 12% sched_debug.cfs_rq:/.nr_queued.avg
1.00 +66.7% 1.67 ± 14% sched_debug.cfs_rq:/.nr_queued.max
0.22 ± 10% +80.5% 0.40 ± 4% sched_debug.cfs_rq:/.nr_queued.stddev
0.00 +1.9e+12% 19199 ± 38% sched_debug.cfs_rq:/.right_vruntime.avg
0.00 +6e+13% 598716 ± 12% sched_debug.cfs_rq:/.right_vruntime.max
142.69 ± 23% +60.8% 229.41 ± 5% sched_debug.cfs_rq:/.runnable_avg.avg
142.61 ± 23% +60.4% 228.74 ± 5% sched_debug.cfs_rq:/.util_avg.avg
12.83 ± 25% +324.8% 54.52 ± 19% sched_debug.cfs_rq:/.util_est.avg
83.56 ± 17% +46.0% 122.02 ± 8% sched_debug.cfs_rq:/.util_est.stddev
1202994 ± 10% -16.1% 1009100 ± 3% sched_debug.cpu.avg_idle.avg
1139 ± 12% +20.7% 1375 sched_debug.cpu.clock_task.stddev
342.10 ± 29% +413.8% 1757 ± 13% sched_debug.cpu.curr->pid.avg
8154 ± 11% +16.4% 9490 sched_debug.cpu.curr->pid.max
1530 ± 14% +104.1% 3124 ± 5% sched_debug.cpu.curr->pid.stddev
0.05 ± 29% +306.0% 0.20 ± 15% sched_debug.cpu.nr_running.avg
1.00 +66.7% 1.67 ± 14% sched_debug.cpu.nr_running.max
0.21 ± 14% +86.5% 0.40 ± 6% sched_debug.cpu.nr_running.stddev
11939 ±125% +364.2% 55424 sched_debug.cpu.nr_switches.avg
296.42 ± 64% +11974.7% 35791 ± 12% sched_debug.cpu.nr_switches.min
29.50 ± 12% +66.9% 49.25 ± 11% sched_debug.cpu.nr_uninterruptible.max
-20.75 +385.1% -100.67 sched_debug.cpu.nr_uninterruptible.min
5.33 ± 8% +102.5% 10.80 ± 9% sched_debug.cpu.nr_uninterruptible.stddev
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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