From: kernel test robot <yi1.lai@intel.com>
To: Christian Brauner <brauner@kernel.org>
Cc: oe-lkp@lists.linux.dev, lkp@intel.com,
linux-kernel@vger.kernel.org,
kernel test robot <yi1.lai@intel.com>,
linux-fsdevel@vger.kernel.org
Subject: [linus:master] [libfs] 02a336a831: stress-ng.clock.ops_per_sec 147.7% improvement
Date: Mon, 9 Nov 2026 10:21:12 +0800 [thread overview]
Message-ID: <202611090811.f9303f5a-lkp@intel.com> (raw)
Hello,
kernel test robot noticed a 147.7% improvement of stress-ng.clock.ops_per_sec on:
commit: 02a336a831f02a18047bacbd49018a237af8a172 ("libfs: hold one mount reference for all pins") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
testcase: stress-ng
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 256 threads 4 sockets INTEL(R) XEON(R) PLATINUM 8592+ (Emerald Rapids) with 256G memory
parameters:
nr_threads: 100%
testtime: 60s
test: clock
cpufreq_governor: performance
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20261109/202611090811.f9303f5a-lkp@intel.com
=========================================================================================
compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
gcc-14/performance/x86_64-rhel-9.4/100%/debian-13-x86_64-20250902.cgz/lkp-emr-2sp1/clock/stress-ng/60s
commit:
eeecea75ec ("proc: don't let an entry below /proc/<pid>/net be a mountpoint")
02a336a831 ("libfs: hold one mount reference for all pins")
eeecea75ece2ba89 02a336a831f02a18047bacbd490
---------------- ---------------------------
%stddev %change %stddev
\ | \
4669272 +147.6% 11562917 stress-ng.clock.ops
77848 +147.7% 192799 stress-ng.clock.ops_per_sec
126459 +80.5% 228294 ± 13% stress-ng.time.involuntary_context_switches
32287 ± 2% -7.1% 30008 ± 3% stress-ng.time.minor_page_faults
23175 +4.0% 24092 stress-ng.time.percent_of_cpu_this_job_got
13907 +3.7% 14423 stress-ng.time.system_time
16.08 +213.4% 50.38 stress-ng.time.user_time
2056711 ± 4% +36.4% 2804386 ± 8% stress-ng.time.voluntary_context_switches
9325 -6.2% 8744 uptime.idle
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
reply other threads:[~2026-11-09 2:21 UTC|newest]
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