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X-CSE-ConnectionGUID: 8F/CL3tDTSGSzq7HBaNoKQ== X-CSE-MsgGUID: l2uzhsGsS4eGejfIyL0ZCg== X-IronPort-AV: E=McAfee;i="6800,10657,11929"; a="201179" X-IronPort-AV: E=Sophos;i="6.27,147,1787036400"; d="scan'208";a="201179" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by orvoesa106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Oct 2026 23:39:06 -0700 X-CSE-ConnectionGUID: Tpg1035cT+e4bln+P7KYGQ== X-CSE-MsgGUID: bqsZdNQwSJi7cq+Du3SAZw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,147,1787036400"; d="scan'208";a="244059" 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 Oct 2026 23:39:06 -0700 Date: Fri, 9 Oct 2026 14:39:02 +0800 From: kernel test robot To: Harry Yoo Cc: oe-lkp@lists.linux.dev, lkp@intel.com, linux-mm@kvack.org, yi1.lai@intel.com Subject: [harry:b4/sheaf-size-round-up] [mm/slab] ddf56dfc79: will-it-scale.per_process_ops 54.5% improvement Message-ID: <202610091451.beda4ec3-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 95AFDC0003 X-Rspam-User: X-Stat-Signature: btpwc8rmt7auwku5jkhr6ee6g6f1muyf X-HE-Tag: 1791527947-236846 X-HE-Meta: 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 RoFrZ4fN NKJk9O+Ye3rJA/t6Glxho5pvonZhzkmYZhB8l+ZPB7dhGs9weWGwHm5yc4Ij3JWD5E3Oma8fITaa+pgrOXaONW3js2/IdvVtTYTBCDhd6IIa8kqx3PWCApQa4ukEC6dOy4XFBpt9n+C2dHSVSmER4T6fuhdE1d6vovYMWbzDwbCNZRLs8ZoOLaG53Z0HvyyNrPtsS5MBOvEc6OAxYMqJo1v+CC/KuXKIjyKyl6oYYDFgBOqI2Lcig1hrcS/MaCdaPMjBH5OqqDcCF3XrV/PIHO5kJOmC74FLd8Qfg8BQVSaLYpAlHyGUheGY5G9odv8wSM55WkPmOxxQwLSgIvGDdELBjI5gKFbIHmb+M3MODeQrqpfhjQDHCdGEgxhEwfUKvNDFw4+jPcXrUONk= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, kernel test robot noticed a 54.5% improvement of will-it-scale.per_process_ops on: commit: ddf56dfc79f5734d7b3aa8ba81f195d52b3e5823 ("mm/slab: round up sheaf size to kmalloc size for explicit sheaf_capacity") https://git.kernel.org/cgit/linux/kernel/git/harry/linux.git b4/sheaf-size-round-up testcase: will-it-scale config: x86_64-rhel-9.4 compiler: gcc-14 test machine: 256 threads 2 sockets GENUINE INTEL(R) XEON(R) (Sierra Forest) with 128G memory parameters: nr_task: 100% mode: process test: brk2 cpufreq_governor: performance Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20261009/202610091451.beda4ec3-lkp@intel.com ========================================================================================= compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase: gcc-14/performance/x86_64-rhel-9.4/process/100%/debian-13-x86_64-20250902.cgz/lkp-srf-2sp1/brk2/will-it-scale commit: 675a745c61 ("EDITME: cover title for sheaf-size-round-up") ddf56dfc79 ("mm/slab: round up sheaf size to kmalloc size for explicit sheaf_capacity") 675a745c6113e420 ddf56dfc79f5734d7b3aa8ba81f ---------------- --------------------------- %stddev %change %stddev \ | \ 70440501 +54.5% 1.089e+08 will-it-scale.256.processes 0.30 ± 3% +35.9% 0.41 ± 8% will-it-scale.256.processes_idle 275157 +54.5% 425248 will-it-scale.per_process_ops 70440501 +54.5% 1.089e+08 will-it-scale.workload 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