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Date: Wed, 29 May 2024 10:54:41 +0800
From: kernel test robot <oliver.sang@intel.com>
To: David Howells <dhowells@redhat.com>
CC: <oe-lkp@lists.linux.dev>, <lkp@intel.com>, <linux-kernel@vger.kernel.org>,
	Steve French <sfrench@samba.org>, Shyam Prasad N <nspmangalore@gmail.com>,
	Rohith Surabattula <rohiths.msft@gmail.com>, Jeff Layton
	<jlayton@kernel.org>, <linux-cifs@vger.kernel.org>,
	<samba-technical@lists.samba.org>, <ying.huang@intel.com>,
	<feng.tang@intel.com>, <fengwei.yin@intel.com>, <oliver.sang@intel.com>
Subject: [linus:master] [cifs]  7c1ac89480:  filebench.sum_operations/s
 -19.4% regression
Message-ID: <202405291057.64718f4-oliver.sang@intel.com>
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Hello,

kernel test robot noticed a -19.4% regression of filebench.sum_operations/s on:


commit: 7c1ac89480e8d5d34d38a868642216c8f05ee602 ("cifs: Enable large folio support")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

testcase: filebench
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: cifs
	test: fivestreamread.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@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202405291057.64718f4-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/20240529/202405291057.64718f4-oliver.sang@intel.com

=========================================================================================
compiler/cpufreq_governor/disk/fs2/fs/kconfig/rootfs/tbox_group/test/testcase:
  gcc-13/performance/1HDD/cifs/ext4/x86_64-rhel-8.3/debian-12-x86_64-20240206.cgz/lkp-icl-2sp6/fivestreamread.f/filebench

commit: 
  b593634424 ("cifs: Remove some code that's no longer used, part 3")
  7c1ac89480 ("cifs: Enable large folio support")

b593634424d4ff13 7c1ac89480e8d5d34d38a868642 
---------------- --------------------------- 
         %stddev     %change         %stddev
             \          |                \  
      1.56 ?  7%     +44.3%       2.25 ?  2%  iostat.cpu.system
      2597 ? 30%     -82.6%     451.00 ? 16%  perf-c2c.DRAM.local
      1.53 ?  7%      +0.7        2.23 ?  2%  mpstat.cpu.all.sys%
      9.73 ? 98%    +481.0%      56.53 ?  5%  mpstat.max_utilization_pct
   2712692 ? 17%     -57.3%    1158294 ? 15%  numa-numastat.node0.local_node
   2790157 ? 16%     -55.9%    1230718 ? 14%  numa-numastat.node0.numa_hit
   2789418 ? 16%     -55.9%    1230047 ? 14%  numa-vmstat.node0.numa_hit
   2711951 ? 17%     -57.3%    1157623 ? 15%  numa-vmstat.node0.numa_local
     28475 ? 29%    +207.2%      87478 ? 14%  sched_debug.cfs_rq:/.avg_vruntime.avg
     28475 ? 29%    +207.2%      87478 ? 14%  sched_debug.cfs_rq:/.min_vruntime.avg
      3.17 ?  4%     +18.9%       3.77 ?  6%  vmstat.procs.r
     10197            +7.6%      10973        vmstat.system.in
    701646 ?  6%     +46.9%    1030651 ?  6%  meminfo.AnonPages
    937851 ?  5%     +36.5%    1280516 ?  4%  meminfo.Committed_AS
    722721 ?  6%     +45.5%    1051746 ?  5%  meminfo.Inactive(anon)
      5888           +11.2%       6550 ?  2%  meminfo.PageTables
     36277 ?  6%     -19.4%      29230 ?  4%  filebench.sum_bytes_mb/s
   2178950 ?  6%     -19.4%    1755646 ?  4%  filebench.sum_operations
     36313 ?  6%     -19.4%      29258 ?  4%  filebench.sum_operations/s
     36313 ?  6%     -19.4%      29258 ?  4%  filebench.sum_reads/s
      0.14 ?  6%     +24.0%       0.17 ?  4%  filebench.sum_time_ms/op
    175413 ?  6%     +46.9%     257668 ?  6%  proc-vmstat.nr_anon_pages
    180693 ?  6%     +45.5%     262957 ?  5%  proc-vmstat.nr_inactive_anon
      1472           +11.2%       1637 ?  2%  proc-vmstat.nr_page_table_pages
     63627            -4.2%      60945        proc-vmstat.nr_slab_reclaimable
      1079 ?  7%     +19.7%       1292 ? 11%  proc-vmstat.nr_writeback
    180693 ?  6%     +45.5%     262957 ?  5%  proc-vmstat.nr_zone_inactive_anon
      5942 ?157%   +1351.7%      86270 ? 28%  proc-vmstat.numa_hint_faults
      3304 ?175%   +1389.9%      49230 ? 36%  proc-vmstat.numa_hint_faults_local
   4601423           -47.1%    2432956        proc-vmstat.numa_hit
   4467440           -48.5%    2300320        proc-vmstat.numa_local
     49222 ? 40%    +193.4%     144420 ? 27%  proc-vmstat.numa_pte_updates
    623992 ?  5%     +42.5%     889010 ?  6%  proc-vmstat.pgfault
   5825920           -21.1%    4596157        proc-vmstat.pgfree
     30735 ?  8%     +80.3%      55418 ? 28%  proc-vmstat.pgreuse
     38.97          +257.2%     139.21 ?  4%  perf-stat.i.MPKI
      2.87            +0.3        3.19        perf-stat.i.branch-miss-rate%
   5231053            -5.6%    4936215        perf-stat.i.branch-misses
     11.93 ?  2%      +5.7       17.63 ?  3%  perf-stat.i.cache-miss-rate%
 1.199e+08 ?  4%     +28.5%  1.541e+08 ?  6%  perf-stat.i.cache-misses
 4.493e+08 ?  5%     -18.5%  3.663e+08 ?  4%  perf-stat.i.cache-references
      3.27 ?  3%    +115.6%       7.05 ?  2%  perf-stat.i.cpi
 7.142e+09 ?  6%     +41.5%   1.01e+10 ?  2%  perf-stat.i.cpu-cycles
      0.42           -12.0%       0.37        perf-stat.i.ipc
      3060 ?  5%     +52.6%       4668 ?  7%  perf-stat.i.minor-faults
      3060 ?  5%     +52.6%       4668 ?  7%  perf-stat.i.page-faults
     74.09 ?  6%     +28.8%      95.45 ?  8%  perf-stat.overall.MPKI
     26.72 ?  2%     +15.3       42.06 ?  3%  perf-stat.overall.cache-miss-rate%
      4.39 ?  3%     +41.9%       6.24        perf-stat.overall.cpi
      0.23 ?  3%     -29.6%       0.16        perf-stat.overall.ipc
   5215140            -5.6%    4921709        perf-stat.ps.branch-misses
 1.198e+08 ?  4%     +28.6%  1.541e+08 ?  6%  perf-stat.ps.cache-misses
 4.488e+08 ?  5%     -18.4%   3.66e+08 ?  4%  perf-stat.ps.cache-references
 7.131e+09 ?  6%     +41.3%  1.008e+10 ?  2%  perf-stat.ps.cpu-cycles
      3031 ?  5%     +52.4%       4620 ?  7%  perf-stat.ps.minor-faults
      3031 ?  5%     +52.4%       4620 ?  7%  perf-stat.ps.page-faults


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