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a="2401028" X-IronPort-AV: E=Sophos;i="6.27,194,1787036400"; d="scan'208";a="2401028" Received: from fmviesa013.fm.intel.com ([10.60.135.153]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Nov 2026 17:35:02 -0800 X-CSE-ConnectionGUID: 9dlUZcGxQO2Nq7Ibx/dttA== X-CSE-MsgGUID: dkvvnlCXRjSUGfPquWZwfQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,194,1787036400"; d="scan'208";a="8446661" Received: from ly-workstation.sh.intel.com (HELO ly-workstation) ([10.239.182.64]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Nov 2026 17:35:00 -0800 Date: Wed, 4 Nov 2026 09:34:57 +0800 From: kernel test robot To: JonasZhou-oc Cc: oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, Theodore Ts'o , 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 Message-ID: <202611040245.a26ace73-lkp@intel.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit 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