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a="2948635" X-IronPort-AV: E=Sophos;i="6.27,202,1787036400"; d="scan'208";a="2948635" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by fmvoesa108.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Nov 2026 18:21:17 -0800 X-CSE-ConnectionGUID: IEp3A2LFTByh4OeuiOyHuw== X-CSE-MsgGUID: +p8k5xMFT+i8ZOH0nyNRqA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,202,1787036400"; d="scan'208";a="7883333" 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; 08 Nov 2026 18:21:16 -0800 Date: Mon, 9 Nov 2026 10:21:12 +0800 From: kernel test robot To: Christian Brauner Cc: oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, kernel test robot , linux-fsdevel@vger.kernel.org Subject: [linus:master] [libfs] 02a336a831: stress-ng.clock.ops_per_sec 147.7% improvement Message-ID: <202611090811.f9303f5a-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 147.7% improvement of stress-ng.clock.ops_per_sec on: commit: 02a336a831f02a18047bacbd49018a237af8a172 ("libfs: hold one mount reference for all pins") 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: clock cpufreq_governor: performance Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20261109/202611090811.f9303f5a-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/clock/stress-ng/60s commit: eeecea75ec ("proc: don't let an entry below /proc//net be a mountpoint") 02a336a831 ("libfs: hold one mount reference for all pins") eeecea75ece2ba89 02a336a831f02a18047bacbd490 ---------------- --------------------------- %stddev %change %stddev \ | \ 4669272 +147.6% 11562917 stress-ng.clock.ops 77848 +147.7% 192799 stress-ng.clock.ops_per_sec 126459 +80.5% 228294 ± 13% stress-ng.time.involuntary_context_switches 32287 ± 2% -7.1% 30008 ± 3% stress-ng.time.minor_page_faults 23175 +4.0% 24092 stress-ng.time.percent_of_cpu_this_job_got 13907 +3.7% 14423 stress-ng.time.system_time 16.08 +213.4% 50.38 stress-ng.time.user_time 2056711 ± 4% +36.4% 2804386 ± 8% stress-ng.time.voluntary_context_switches 9325 -6.2% 8744 uptime.idle 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