From: kernel test robot <yi1.lai@intel.com>
To: Chengfeng Ye <nicoyip.dev@gmail.com>
Cc: oe-lkp@lists.linux.dev, lkp@intel.com,
linux-kernel@vger.kernel.org,
Steffen Klassert <steffen.klassert@secunet.com>,
netdev@vger.kernel.org, yi1.lai@intel.com
Subject: [linus:master] [xfrm] 89fefad9f9: stress-ng.epoll.ops_per_sec 25.4% regression
Date: Tue, 20 Oct 2026 11:28:13 +0800 [thread overview]
Message-ID: <202610201112.ddb3ab07-lkp@intel.com> (raw)
Hello,
kernel test robot noticed a 25.4% regression of stress-ng.epoll.ops_per_sec on:
commit: 89fefad9f971bc637fb22373078144f2563c4be9 ("xfrm: serialize state GC with device state flush") 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: epoll
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 <yi1.lai@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202610201112.ddb3ab07-lkp@intel.com
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20261020/202610201112.ddb3ab07-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/epoll/stress-ng/60s
commit:
d042487dc1 ("xfrm: iptfs: fix stack OOB read in iptfs_skb_reset_frag_walk()")
89fefad9f9 ("xfrm: serialize state GC with device state flush")
d042487dc118e494 89fefad9f971bc637fb22373078
---------------- ---------------------------
%stddev %change %stddev
\ | \
1.889e+08 -25.4% 1.41e+08 stress-ng.epoll.ops
3146137 -25.4% 2347837 stress-ng.epoll.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:[~2026-10-20 3:28 UTC|newest]
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