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X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: pef9xDCvAQIZPB/c06YgUiWH0pMYpLgV3afcedREWb5YH7oGgcvoUudjVbFdM6Vs/tPDQgx0j2t/RfJKG4cEEA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR11MB6490 X-OriginatorOrg: intel.com Hello, kernel test robot noticed a 12.4% regression of filebench.sum_operations/s on: commit: b55102826d7d3d41a5777931689c746207308c95 ("btrfs: set AS_KERNEL_FILE on the btree_inode") https://git.kernel.org/cgit/linux/kernel/git/akpm/mm.git mm-stable testcase: filebench config: x86_64-rhel-9.4 compiler: gcc-14 test machine: 192 threads 4 sockets Intel(R) Xeon(R) Platinum 9242 CPU @ 2.30GHz (Cascade Lake) with 176G memory parameters: disk: 1SSD fs: btrfs test: randomwrite.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/202509251432.59b331b7-lkp@intel.com Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250925/202509251432.59b331b7-lkp@intel.com ========================================================================================= compiler/cpufreq_governor/disk/fs/kconfig/rootfs/tbox_group/test/testcase: gcc-14/performance/1SSD/btrfs/x86_64-rhel-9.4/debian-13-x86_64-20250902.cgz/lkp-csl-2sp10/randomwrite.f/filebench commit: e3a9ac4e86 ("mm: add vmstat for kernel_file pages") b55102826d ("btrfs: set AS_KERNEL_FILE on the btree_inode") e3a9ac4e866ea746 b55102826d7d3d41a5777931689 ---------------- --------------------------- %stddev %change %stddev \ | \ 2.90 +2.2% 2.96 iostat.cpu.system 1293622 -21.8% 1011948 meminfo.Dirty 111179 +22.7% 136404 ± 2% meminfo.Shmem 0.02 ± 4% -0.0 0.02 ± 6% mpstat.cpu.all.iowait% 0.39 +0.1 0.47 mpstat.cpu.all.sys% 1300 +2.7% 1335 turbostat.Bzy_MHz 0.16 ± 3% +0.1 0.23 ± 4% turbostat.C1% 24580 ± 18% +368.5% 115156 ± 97% numa-meminfo.node0.Active 24573 ± 18% +368.6% 115148 ± 97% numa-meminfo.node0.Active(anon) 80724 ± 25% +33.1% 107431 ± 9% numa-meminfo.node3.Shmem 9462 ± 4% +48.2% 14025 ± 3% sched_debug.cpu.nr_switches.avg 104544 ± 9% +42.0% 148483 ± 22% sched_debug.cpu.nr_switches.max 18711 ± 6% +40.0% 26196 ± 7% sched_debug.cpu.nr_switches.stddev 6144 ± 18% +368.1% 28763 ± 97% numa-vmstat.node0.nr_active_anon 609471 ±216% +427.6% 3215506 ± 68% numa-vmstat.node0.nr_dirtied 602202 ±217% +429.1% 3186249 ± 68% numa-vmstat.node0.nr_written 6144 ± 18% +368.1% 28762 ± 97% numa-vmstat.node0.nr_zone_active_anon 20153 ± 26% +33.3% 26862 ± 9% numa-vmstat.node3.nr_shmem 800.20 -12.4% 701.12 filebench.sum_bytes_mb/s 6146050 -12.4% 5384959 filebench.sum_operations 102425 -12.4% 89741 filebench.sum_operations/s 0.01 ± 4% +13.8% 0.01 filebench.sum_time_ms/op 102425 -12.4% 89741 filebench.sum_writes/s 28873566 ± 2% +32.2% 38160857 ± 2% filebench.time.file_system_outputs 4.01 ± 29% +4383.5% 180.01 ±203% perf-sched.sch_delay.max.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 4.01 ± 29% +4383.5% 180.01 ±203% perf-sched.total_sch_delay.max.ms 179.61 ± 6% -78.9% 37.91 ± 10% perf-sched.total_wait_and_delay.average.ms 7539 ± 6% +412.6% 38652 ± 9% perf-sched.total_wait_and_delay.count.ms 4983 -25.5% 3713 ± 13% perf-sched.total_wait_and_delay.max.ms 179.60 ± 6% -78.9% 37.89 ± 10% perf-sched.total_wait_time.average.ms 4983 -25.5% 3713 ± 13% perf-sched.total_wait_time.max.ms 179.61 ± 6% -78.9% 37.91 ± 10% perf-sched.wait_and_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 7539 ± 6% +412.6% 38652 ± 9% perf-sched.wait_and_delay.count.[unknown].[unknown].[unknown].[unknown].[unknown] 4983 -25.5% 3713 ± 13% perf-sched.wait_and_delay.max.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 179.60 ± 6% -78.9% 37.89 ± 10% perf-sched.wait_time.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 4983 -25.5% 3713 ± 13% perf-sched.wait_time.max.ms.[unknown].[unknown].[unknown].[unknown].[unknown] 191802 +3.3% 198131 proc-vmstat.nr_active_anon 3666016 ± 2% +33.5% 4895484 ± 2% proc-vmstat.nr_dirtied 324179 -21.8% 253508 proc-vmstat.nr_dirty 2228424 +1.9% 2271558 proc-vmstat.nr_file_pages 1283451 +2.9% 1320253 proc-vmstat.nr_inactive_file 27774 +22.7% 34080 ± 2% proc-vmstat.nr_shmem 35203 +1.7% 35786 proc-vmstat.nr_slab_reclaimable 97029 +2.5% 99413 proc-vmstat.nr_slab_unreclaimable 3628151 ± 2% +33.4% 4838878 ± 2% proc-vmstat.nr_written 191802 +3.3% 198131 proc-vmstat.nr_zone_active_anon 1283451 +2.9% 1320253 proc-vmstat.nr_zone_inactive_file 325032 -21.8% 254299 proc-vmstat.nr_zone_write_pending 2438711 +4.5% 2548843 proc-vmstat.numa_hit 2140583 +5.2% 2250864 proc-vmstat.numa_local 2587325 +5.2% 2722312 proc-vmstat.pgalloc_normal 2441172 +1.9% 2488658 proc-vmstat.pgfree 14693823 ± 2% +34.6% 19777902 ± 2% proc-vmstat.pgpgout 5.99 -2.4% 5.84 perf-stat.i.MPKI 7.594e+08 +12.2% 8.523e+08 perf-stat.i.branch-instructions 7.74 ± 2% +0.6 8.37 ± 3% perf-stat.i.cache-miss-rate% 12470451 +11.0% 13837828 perf-stat.i.cache-misses 1.627e+08 +2.6% 1.67e+08 perf-stat.i.cache-references 17709 ± 3% +42.7% 25268 ± 3% perf-stat.i.context-switches 1.189e+10 +3.9% 1.236e+10 perf-stat.i.cpu-cycles 3.777e+09 +14.4% 4.323e+09 perf-stat.i.instructions 0.28 +7.5% 0.30 perf-stat.i.ipc 5.53 -0.5 5.00 perf-stat.overall.branch-miss-rate% 7.66 ± 2% +0.6 8.28 ± 2% perf-stat.overall.cache-miss-rate% 3.15 ± 2% -9.2% 2.86 perf-stat.overall.cpi 954.54 ± 3% -6.3% 894.29 ± 3% perf-stat.overall.cycles-between-cache-misses 0.32 ± 2% +10.1% 0.35 perf-stat.overall.ipc 7.538e+08 +12.2% 8.459e+08 perf-stat.ps.branch-instructions 12385908 +10.9% 13741541 perf-stat.ps.cache-misses 1.618e+08 +2.6% 1.66e+08 perf-stat.ps.cache-references 17574 ± 3% +42.6% 25062 ± 3% perf-stat.ps.context-switches 1.182e+10 +3.9% 1.228e+10 perf-stat.ps.cpu-cycles 3.749e+09 +14.4% 4.29e+09 perf-stat.ps.instructions 6.365e+11 ± 2% +15.1% 7.326e+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