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aBjDWxHGkwF8mZjobLi1Hz4StvMoQxVGa5xANagTAwqJpUjokIoCY2/jJPYqSfmSo545X4yuwGsuD3TpOqroow== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR11MB7313 X-OriginatorOrg: intel.com 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 | Closes: https://lore.kernel.org/oe-lkp/202412252119.8934ca82-lkp@intel.com 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@intel.com ========================================================================================= 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