Hello,
kernel test robot noticed a 15.7% regression of filebench.sum_operations/s on:
commit: 1436c81cbe9bef840cccc8a921948238e281442b ("nfsd: handle delegated timestamps in SETATTR")
https://git.kernel.org/cgit/linux/kernel/git/jlayton/linux.git delstid
testcase: filebench
config: x86_64-rhel-9.4
compiler: gcc-12
test machine: 128 threads 2 sockets Intel(R) Xeon(R) Platinum 8358 CPU @ 2.60GHz (Ice Lake) with 128G memory
parameters:
disk: 1HDD
fs: ext4
fs2: nfsv4
test: fileserver.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 <oliver.sang@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-lkp/202412252119.8934ca82-lkp@xxxxxxxxx
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20241225/202412252119.8934ca82-lkp@xxxxxxxxx
=========================================================================================
compiler/cpufreq_governor/disk/fs2/fs/kconfig/rootfs/tbox_group/test/testcase:
gcc-12/performance/1HDD/nfsv4/ext4/x86_64-rhel-9.4/debian-12-x86_64-20240206.cgz/lkp-icl-2sp6/fileserver.f/filebench
commit:
e42e5990ce ("nfsd: add support for delegated timestamps")
1436c81cbe ("nfsd: handle delegated timestamps in SETATTR")
e42e5990ceb8ddbb 1436c81cbe9bef840cccc8a9219
---------------- ---------------------------
%stddev %change %stddev
\ | \
5176774 +10.1% 5700789 cpuidle..usage
81.80 ± 16% +37.1% 112.11 ± 21% perf-sched.wait_time.max.ms.io_schedule.folio_wait_bit_common.folio_wait_writeback.__filemap_fdatawait_range
1467 -5.2% 1390 vmstat.io.bo
2162 -4.1% 2073 vmstat.system.cs
2962 +6.0% 3138 vmstat.system.in
613132 -1.5% 604009 proc-vmstat.nr_dirtied
20689 +3.2% 21341 proc-vmstat.nr_shmem
613062 -1.5% 603944 proc-vmstat.nr_written
3388546 +3.8% 3516202 proc-vmstat.numa_hit
3255944 +3.9% 3383613 proc-vmstat.numa_local
4280567 +3.1% 4415074 proc-vmstat.pgalloc_normal
3620218 +5.9% 3833758 proc-vmstat.pgfault
4169646 +3.0% 4296404 proc-vmstat.pgfree
158758 +5.9% 168050 proc-vmstat.pgreuse
4.87 -16.1% 4.08 filebench.sum_bytes_mb/s
12799 -15.7% 10791 filebench.sum_operations
213.31 -15.7% 179.83 filebench.sum_operations/s
19.00 -15.8% 16.00 filebench.sum_reads/s
232.79 +18.3% 275.40 filebench.sum_time_ms/op
39.00 -15.4% 33.00 filebench.sum_writes/s
1427 +5.6% 1507 filebench.time.elapsed_time
1427 +5.6% 1507 filebench.time.elapsed_time.max
2377240 -2.1% 2328234 filebench.time.file_system_outputs
58841 -4.9% 55954 filebench.time.voluntary_context_switches
2.70 ± 10% -0.4 2.30 ± 7% perf-profile.calltrace.cycles-pp.asm_exc_page_fault
0.36 ± 22% -0.2 0.16 ± 34% perf-profile.children.cycles-pp.irqentry_enter
0.29 ± 25% -0.1 0.14 ± 37% perf-profile.children.cycles-pp.kfree
0.39 ± 10% -0.1 0.31 ± 15% perf-profile.children.cycles-pp.wait4
0.02 ±223% +0.1 0.14 ± 27% perf-profile.children.cycles-pp.__kmalloc_noprof
0.43 ± 13% -0.2 0.25 ± 15% perf-profile.self.cycles-pp.kmem_cache_free
0.18 ± 23% -0.1 0.06 ± 80% perf-profile.self.cycles-pp.irqentry_enter
0.23 ± 29% -0.1 0.11 ± 54% perf-profile.self.cycles-pp.kfree
0.10 ± 57% +0.1 0.19 ± 17% perf-profile.self.cycles-pp.__block_commit_write
0.01 ±223% +0.1 0.11 ± 32% perf-profile.self.cycles-pp.__kmalloc_noprof
0.09 ± 53% +0.1 0.19 ± 24% perf-profile.self.cycles-pp.rcu_sched_clock_irq
32545397 -1.4% 32080624 perf-stat.i.branch-instructions
5.56 +0.1 5.69 perf-stat.i.branch-miss-rate%
11214449 +4.0% 11660477 perf-stat.i.cache-references
2150 -4.2% 2059 perf-stat.i.context-switches
2.25 +1.3% 2.28 perf-stat.i.cpi
1.585e+08 -1.4% 1.563e+08 perf-stat.i.instructions
0.46 -1.2% 0.45 perf-stat.i.ipc
5.32 +0.1 5.44 perf-stat.overall.branch-miss-rate%
1.87 +1.9% 1.90 perf-stat.overall.cpi
0.54 -1.9% 0.53 perf-stat.overall.ipc
32487857 -1.4% 32026463 perf-stat.ps.branch-instructions
11205362 +4.0% 11651731 perf-stat.ps.cache-references
2148 -4.2% 2058 perf-stat.ps.context-switches
1.583e+08 -1.4% 1.56e+08 perf-stat.ps.instructions
2.261e+11 +4.9% 2.371e+11 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
