From: kernel test robot <yi1.lai@intel.com>
To: Vincent Guittot <vincent.guittot@linaro.org>
Cc: oe-lkp@lists.linux.dev, lkp@intel.com,
linux-kernel@vger.kernel.org,
Peter Zijlstra <peterz@infradead.org>,
aubrey.li@linux.intel.com, yu.c.chen@intel.com,
yi1.lai@intel.com
Subject: [linus:master] [sched] 333238da9a: stress-ng.vm-rw.ops_per_sec 36.4% improvement
Date: Wed, 28 Oct 2026 09:11:48 +0800 [thread overview]
Message-ID: <202610280223.6ff1abde-lkp@intel.com> (raw)
Hello,
kernel test robot noticed a 36.4% improvement of stress-ng.vm-rw.ops_per_sec on:
commit: 333238da9a193ffc58792995f3e951e4cb87bfd2 ("sched: Update time before requeueing delayed entities") 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: 224 threads 2 sockets Intel(R) Xeon(R) (Sapphire Rapids) with 128G memory
parameters:
nr_threads: 100%
testtime: 60s
test: vm-rw
cpufreq_governor: performance
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20261028/202610280223.6ff1abde-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-spr-2sp3/vm-rw/stress-ng/60s
commit:
v7.2-rc7
333238da9a ("sched: Update time before requeueing delayed entities")
v7.2-rc7 333238da9a193ffc58792995f3e
---------------- ---------------------------
%stddev %change %stddev
\ | \
5.011e+08 +35.9% 6.808e+08 ± 35% stress-ng.time.voluntary_context_switches
2.519e+08 +36.4% 3.436e+08 ± 36% stress-ng.vm-rw.ops
4200915 +36.4% 5729669 ± 36% stress-ng.vm-rw.ops_per_sec
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:[~2026-10-28 1:11 UTC|newest]
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