From: kernel test robot <yi1.lai@intel.com>
To: JonasZhou-oc <jonaszhou-oc@zhaoxin.com>
Cc: oe-lkp@lists.linux.dev, lkp@intel.com,
linux-kernel@vger.kernel.org, Theodore Ts'o <tytso@mit.edu>,
linux-ext4@vger.kernel.org, yi1.lai@intel.com
Subject: [linus:master] [jbd2] b5501f970d: fxmark.ssd_ext4_dbench_client_32_directio.works/sec 5.7% improvement
Date: Wed, 4 Nov 2026 09:34:57 +0800 [thread overview]
Message-ID: <202611040245.a26ace73-lkp@intel.com> (raw)
Hello,
kernel test robot noticed a 5.7% improvement of fxmark.ssd_ext4_dbench_client_32_directio.works/sec on:
commit: b5501f970dbc039df1f7c720b7a481b62de125cd ("jbd2: avoid false sharing with j_state_lock") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
testcase: fxmark
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 64 threads 2 sockets Intel(R) Xeon(R) Gold 6346 CPU @ 3.10GHz (Ice Lake) with 256G memory
parameters:
nr_threads: 2c
disk: 1SSD
media: ssd
test: dbench_client
fstype: ext4
directio: directio
cpufreq_governor: performance
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20261104/202611040245.a26ace73-lkp@intel.com
=========================================================================================
compiler/cpufreq_governor/directio/disk/fstype/kconfig/media/nr_threads/rootfs/tbox_group/test/testcase:
gcc-14/performance/directio/1SSD/ext4/x86_64-rhel-9.4/ssd/2c/debian-13-x86_64-20250902.cgz/lkp-icl-2sp8/dbench_client/fxmark
commit:
4a87cfb9b4 ("ext4: convert group-count barrier protocol to acquire/release")
b5501f970d ("jbd2: avoid false sharing with j_state_lock")
4a87cfb9b45ae07c b5501f970dbc039df1f7c720b7a
---------------- ---------------------------
%stddev %change %stddev
\ | \
176.50 +7.0% 188.87 fxmark.ssd_ext4_dbench_client_32_directio.iowait_sec
2.70 +13.7% 3.06 ± 18% fxmark.ssd_ext4_dbench_client_32_directio.softirq_sec
128.43 +6.9% 137.23 ± 2% fxmark.ssd_ext4_dbench_client_32_directio.user_sec
11759 +5.7% 12432 fxmark.ssd_ext4_dbench_client_32_directio.works/sec
2.98e+08 +5.8% 3.153e+08 fxmark.time.file_system_outputs
108.65 +7.4% 116.70 fxmark.time.user_time
6468008 +5.2% 6803995 fxmark.time.voluntary_context_switches
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:[~2026-11-04 1:35 UTC|newest]
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