[linus:master] [fs] 161ce1e692: will-it-scale.per_process_ops 113.3% improvement

[linus:master] [fs] 161ce1e692: will-it-scale.per_process_ops 113.3% improvement

[kernel test robot]

Hello,

kernel test robot noticed a 113.3% improvement of will-it-scale.per_process_ops on:

commit: 161ce1e692d01ddec0522f24a29535ac59a3afaf ("fs: avoid spurious dentry ref/unref cycle on open") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

testcase: will-it-scale
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 192 threads 2 sockets Intel(R) Xeon(R) 6740E  CPU @ 2.4GHz (Sierra Forest) with 256G memory
parameters:

	nr_task: 100%
	mode: process
	test: open3
	cpufreq_governor: performance

Details are as below:
-------------------------------------------------------------------------------------------------->

The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20261106/202611060127.79124a4f-lkp@intel.com

=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase:
  gcc-14/performance/x86_64-rhel-9.4/process/100%/debian-13-x86_64-20250902.cgz/lkp-srf-2sp2/open3/will-it-scale

commit: 
  v7.3-rc1
  161ce1e692 ("fs: avoid spurious dentry ref/unref cycle on open")

        v7.3-rc1 161ce1e692d01ddec0522f24a29
---------------- --------------------------- 
         %stddev     %change         %stddev
             \          |                \  
    582504 ±  4%    +113.3%    1242579 ± 18%  will-it-scale.192.processes
      3033 ±  4%    +113.3%       6471 ± 18%  will-it-scale.per_process_ops
    582504 ±  4%    +113.3%    1242579 ± 18%  will-it-scale.workload
      0.14 ±  3%      +0.0        0.18 ±  9%  mpstat.cpu.all.usr%


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