* [linux-next:master] [mm] 1e61c0bd82: will-it-scale.per_process_ops 6.2% improvement
@ 2026-11-09 3:07 kernel test robot
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From: kernel test robot @ 2026-11-09 3:07 UTC (permalink / raw)
To: Joanne Koong
Cc: oe-lkp, lkp, Andrew Morton, Shakeel Butt, Yosry Ahmed,
Johannes Weiner, Michal Hocko, Roman Gushchin, Muchun Song,
David Hildenbrand, Lorenzo Stoakes, Liam R. Howlett,
Vlastimil Babka, Mike Rapoport, Suren Baghdasaryan, Kairui Song,
Qi Zheng, Barry Song, Baolin Wang, Axel Rasmussen, Yuanchu Xie,
Wei Xu, Baoquan He, linux-mm, yi1.lai
Hello,
kernel test robot noticed a 6.2% improvement of will-it-scale.per_process_ops on:
commit: 1e61c0bd822af6f9026c048d53fe8824881df8d7 ("mm: move LRU size stat updates out of lru_lock in folio batches") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
testcase: will-it-scale
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 224 threads 2 sockets Intel(R) Xeon(R) Platinum 8480CTDX (Sapphire Rapids) with 512G memory
parameters:
nr_task: 100%
mode: process
test: fallocate2
cpufreq_governor: performance
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20261109/202611091011.f4668ccc-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-spr-2sp5/fallocate2/will-it-scale
commit:
25e9342d48 ("tools/mm/thpmaps: fix missing mapping names")
1e61c0bd82 ("mm: move LRU size stat updates out of lru_lock in folio batches")
25e9342d487fcfaa 1e61c0bd822af6f9026c048d53f
---------------- ---------------------------
%stddev %change %stddev
\ | \
5750918 +6.2% 6109659 will-it-scale.224.processes
25673 +6.2% 27274 will-it-scale.per_process_ops
5750918 +6.2% 6109659 will-it-scale.workload
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
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2026-11-09 3:07 [linux-next:master] [mm] 1e61c0bd82: will-it-scale.per_process_ops 6.2% improvement kernel test robot
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