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]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=202610201112.ddb3ab07-lkp@intel.com \
--to=yi1.lai@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=lkp@intel.com \
--cc=netdev@vger.kernel.org \
--cc=nicoyip.dev@gmail.com \
--cc=oe-lkp@lists.linux.dev \
--cc=steffen.klassert@secunet.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®