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Date: Thu, 22 Feb 2024 10:07:18 +0800
From: kernel test robot <oliver.sang@intel.com>
To: Paulo Alcantara <pc@manguebit.com>
CC: <oe-lkp@lists.linux.dev>, <lkp@intel.com>, <linux-kernel@vger.kernel.org>,
	Steve French <stfrench@microsoft.com>, <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] [smb]  55c7788c37:  filebench.sum_operations/s -5.8%
 regression
Message-ID: <202402220939.82e05c80-oliver.sang@intel.com>
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Hello,

kernel test robot noticed a -5.8% regression of filebench.sum_operations/s on:


commit: 55c7788c37242702868bfac7861cdf0c358d6c3d ("smb: client: set correct d_type for reparse points under DFS mounts")
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: xfs
	fs2: cifs
	test: listdirs.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/202402220939.82e05c80-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/20240222/202402220939.82e05c80-oliver.sang@intel.com

=========================================================================================
compiler/cpufreq_governor/disk/fs2/fs/kconfig/rootfs/tbox_group/test/testcase:
  gcc-12/performance/1HDD/cifs/xfs/x86_64-rhel-8.3/debian-11.1-x86_64-20220510.cgz/lkp-icl-2sp6/listdirs.f/filebench

commit: 
  45be0882c5 ("smb3: add missing null server pointer check")
  55c7788c37 ("smb: client: set correct d_type for reparse points under DFS mounts")

45be0882c5f91e1b 55c7788c37242702868bfac7861 
---------------- --------------------------- 
         %stddev     %change         %stddev
             \          |                \  
      2.52            -0.1        2.42        turbostat.C1E%
     37127            -4.2%      35586        vmstat.system.cs
     37311            -4.3%      35707        perf-stat.i.context-switches
     37139            -4.3%      35545        perf-stat.ps.context-switches
    883301            -1.0%     874098        proc-vmstat.numa_local
   2284791            -2.7%    2222575        proc-vmstat.pgalloc_normal
   2193531            -2.7%    2135398        proc-vmstat.pgfree
      9.95            -5.6%       9.39        filebench.sum_bytes_mb/s
    294200            -5.8%     277276        filebench.sum_operations
      4903            -5.8%       4620        filebench.sum_operations/s
      3.26            +6.1%       3.45        filebench.sum_time_ms/op
   1685851            -5.0%    1601112        filebench.time.voluntary_context_switches
      0.00            +0.7        0.68 ? 19%  perf-profile.calltrace.cycles-pp.listxattr
      0.00            +0.1        0.08 ? 27%  perf-profile.children.cycles-pp.strcasecmp_m_handle
      0.00            +0.1        0.08 ? 33%  perf-profile.children.cycles-pp.next_codepoint_handle
      0.11 ? 31%      +0.1        0.20 ? 25%  perf-profile.children.cycles-pp.next_codepoint_handle_ext
      0.00            +0.1        0.11 ? 29%  perf-profile.children.cycles-pp.xfs_attr_list
      0.00            +0.1        0.13 ? 27%  perf-profile.children.cycles-pp.xfs_vn_listxattr
      0.93 ? 20%      +0.5        1.40 ? 16%  perf-profile.children.cycles-pp.user_path_at_empty
      0.00            +0.6        0.63 ? 21%  perf-profile.children.cycles-pp.path_listxattr
      0.01 ?212%      +0.9        0.90 ? 21%  perf-profile.children.cycles-pp.listxattr
      0.10 ? 31%      +0.1        0.17 ? 27%  perf-profile.self.cycles-pp.next_codepoint_handle_ext


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