From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BE6CF2046BD; Wed, 12 Feb 2025 08:14:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=192.198.163.9 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739348057; cv=fail; b=rs2vrAQ0HWDNltSZ5EIkt6FrPbkddtMZrlrDQ//mOZ2NdVdNngaio3FQwyIVt2eFt9zicgeOF6YEH5tyfX2Yfaxt3zErzOGxVMnhtl7PAEHAKYvI7C1i3OdYtV6FOOBV5w9yTJRDezVn9BkOHervhUYrtGIzMP8KNq7JE1UMYoM= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739348057; c=relaxed/simple; bh=+tIeyb/d19NC5ip03rZsD7f1cGTdSNgF2g+jP5bCfA0=; h=Date:From:To:CC:Subject:Message-ID:Content-Type: Content-Disposition:MIME-Version; b=hFG+hcNIfqaMxces8qYeJNbZ8mePDuML17p7UBp6ea+qI+loFn7H7qDanU1SdbOdkTXWo/RUfyYkRVj9vh1RsFo56uV3AfYdM/eyHKAyZM5brqB7oJUU4c4xkuL7kXSVVrotsfqpa/JiYwH/kCtXWO7+WZRuahMGPTWaP0fd/OI= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=XqBaO7O9; arc=fail smtp.client-ip=192.198.163.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="XqBaO7O9" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1739348055; x=1770884055; h=date:from:to:cc:subject:message-id: content-transfer-encoding:mime-version; bh=+tIeyb/d19NC5ip03rZsD7f1cGTdSNgF2g+jP5bCfA0=; b=XqBaO7O9NPLppxZ1vuHB9pPlQPmQsQVRh+O6DpBwWCMsEXhPcKhX3gfj pGQ601gDcNI1A0G61W3kjLyFpvkL55hUyoX/MP3oPlsBXc1B+y7M36InR wdwy/nmyW0tR44pK78l3ZkKEwOcnWyBc3zFkN9EGAmTGLuk5zSUEpbo0k aE9S9LrMVzuwcQ0cNIpLv3pT9daOzCHNO1t886qtWiOlq5nMpOEr5s57k iWCvcH20MO0sSrFCq4UIqhhSYYweo9VjRg0UzVqVAtBMMHg65g0kmmsCg ma+/68GiqBzLI5RuppemkKuT+NvuGN5PVikEQGyQsanj4TT5GgVaiva/Z g==; X-CSE-ConnectionGUID: uQv4hupUTk+eRwACh07pJw== X-CSE-MsgGUID: bFexw9gfQjmkWHBoz1q+7g== X-IronPort-AV: E=McAfee;i="6700,10204,11342"; a="50636037" X-IronPort-AV: E=Sophos;i="6.13,279,1732608000"; d="scan'208";a="50636037" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Feb 2025 00:14:13 -0800 X-CSE-ConnectionGUID: cxwunE+LSsK7kFT7/olb7w== X-CSE-MsgGUID: qFIpWPQ0QbWOaJ6+/tGw+A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.13,279,1732608000"; d="scan'208";a="112509170" Received: from orsmsx601.amr.corp.intel.com ([10.22.229.14]) by orviesa009.jf.intel.com with ESMTP/TLS/AES256-GCM-SHA384; 12 Feb 2025 00:14:12 -0800 Received: from ORSMSX901.amr.corp.intel.com (10.22.229.23) by ORSMSX601.amr.corp.intel.com (10.22.229.14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.44; Wed, 12 Feb 2025 00:14:11 -0800 Received: from ORSEDG601.ED.cps.intel.com (10.7.248.6) by ORSMSX901.amr.corp.intel.com (10.22.229.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.14 via Frontend Transport; Wed, 12 Feb 2025 00:14:11 -0800 Received: from NAM04-BN8-obe.outbound.protection.outlook.com (104.47.74.48) by edgegateway.intel.com (134.134.137.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.44; Wed, 12 Feb 2025 00:14:11 -0800 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=ofs7FPOBwlIAyNcSXCa9pThukWuRxLYqxm0EdQg+aMdddQXC9gtJWaENw7+QQTo2dFDDsLBHC1ZaDXLrk+VucNugB9otrBQFxbLj3OBo6BeHYLnlS+63J7ql9Ze5zZmipFANcahMdxJp9QuEKCxjKxT9c4y08ltBzPtYGHSkQuhATvuEn3L9rjYNKZ/DlOJbxDQHt/ZMTHGdjNlqFIGzT6vlQ8VOa+X7o/Y4fxr4Qppo0dFdtuORScnHBWfKxFZWxAKqkxhYQavCoC/BRK7P3Hh/3w26ZlBcCXwgCgjZuwLst78l9GARSnm8ZWrv31bAlQtPsjMQBTPNyrvmSBAEPA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=QqcCUO/tpc+n6KblapVeypWcDt0BEWKr1xjabfFV+as=; b=lgOX7C4VmvjZCX63n4neoarHAG2eM+Mph2QqhY9bOXbmkTrxZxkRpBnnLn/bGTnG86yuaIAVyEsEWA2LFCWMPprTo0lBcrAY9FTJoxKt0JnlwpF+HJ3LDpQTRzUxLe/tDD7Cos8WaGg+7Bh2LaUHKwgQFc4gBrHGxj7E6P6h1nHcIDPtDJv38TuVIfNp4HCycASw0PLk1ksK5wfGq0f6TGFv4DtFN5MTxeMpywK3tHh6ITIh00pYlGgRPTKo9YaNCjKAEXwEyc0zdw3yXl2wSyKaiEcnxo2BwMFvsWq/SAZe+wZJPhHOLXQI6G6qsAb9ud8YeCd4CWUh0LckUxlMfQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=intel.com; dmarc=pass action=none header.from=intel.com; dkim=pass header.d=intel.com; arc=none Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=intel.com; Received: from LV3PR11MB8603.namprd11.prod.outlook.com (2603:10b6:408:1b6::9) by SJ2PR11MB7519.namprd11.prod.outlook.com (2603:10b6:a03:4c0::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8422.19; Wed, 12 Feb 2025 08:14:08 +0000 Received: from LV3PR11MB8603.namprd11.prod.outlook.com ([fe80::4622:29cf:32b:7e5c]) by LV3PR11MB8603.namprd11.prod.outlook.com ([fe80::4622:29cf:32b:7e5c%3]) with mapi id 15.20.8422.015; Wed, 12 Feb 2025 08:14:08 +0000 Date: Wed, 12 Feb 2025 16:13:58 +0800 From: kernel test robot To: Dave Hansen CC: , , Dave Hansen , , , Subject: [daveh-devel:prefault-20250128] [filemap] bc10506d7c: unixbench.throughput 5.1% improvement Message-ID: <202502121529.d62a409e-lkp@intel.com> Content-Type: text/plain; charset="iso-8859-1" Content-Disposition: inline Content-Transfer-Encoding: 8bit X-ClientProxiedBy: KL1PR02CA0012.apcprd02.prod.outlook.com (2603:1096:820:c::17) To LV3PR11MB8603.namprd11.prod.outlook.com (2603:10b6:408:1b6::9) Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV3PR11MB8603:EE_|SJ2PR11MB7519:EE_ X-MS-Office365-Filtering-Correlation-Id: 0703af91-de64-4a4d-b0d1-08dd4b3d38f0 X-LD-Processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|1800799024|366016; X-Microsoft-Antispam-Message-Info: =?iso-8859-1?Q?8x24IZLhW74JYHrzFXrjnO+aegXFiYlh1hp1VVk68lBFJQ5ckXKavYBkrl?= =?iso-8859-1?Q?/prAvsacPa35zLR5FeTznAL/gmY40DH9pTo1Ei/FWg/3DePEk6FRWFEmVH?= =?iso-8859-1?Q?CXpVIdO0pWk5Y8/ZdJDV/JQahCCBlHZfhWHmY5rqgYAaz7Z9OsgwLb7TH+?= =?iso-8859-1?Q?8/lwm7HMA3NWB3JVNVGbUVCu3sQZL/06+fPgKhVPOdCpwPR1c41OuX8uDO?= =?iso-8859-1?Q?DuhrjedJDcvv6cqlgF/TOaVkybvhV6TnSVg5GowApt/rZI4oXwkX4lXkxC?= =?iso-8859-1?Q?WKAMR/SSHpi3NBvDUJqvUuMfHeE2oJD/Unp09Wtnp9Y4usDzzgLuZC2Qfw?= =?iso-8859-1?Q?r2H1I1i/3QBPBSPlSGylZEmpd9IuZ69cGSs8nndOoaBK9oozRQqKOmkCrz?= =?iso-8859-1?Q?etXtPPisetbY7OzOfwqg5P5S2EGdLfznqzWvnJMVRZZQQSnJ/B5mQy/+kG?= =?iso-8859-1?Q?5eiBF6xzvS8+pv3sY4LicBBPR5ZNebxlDj7Ru0MJIGNmGNkAZC0Llsn67K?= =?iso-8859-1?Q?5I9rx8Z9xnUb1eH7E2pCEzGWg4CfvNixd5gIsC1S4mY7bmgPDqeT6NXYEF?= =?iso-8859-1?Q?Y/8JRpsSHi9fQcK50zB80TfO015OhITuhpnRsy8U5qAUPoW6yW9b6BJtKd?= =?iso-8859-1?Q?RvcKRbPrFC14W5ky1EecCS/LK2zaMtFcm91eQ49yJFW0SwFfWWwNvIVGtP?= =?iso-8859-1?Q?LzT8KM6O2xZ5ZpzQ6lYHEdzEi1SHtM/KDyI1GMK1hFPeg4UXzqaXDpKJJ1?= =?iso-8859-1?Q?wBUXqw2jtTRC1PCnaIakqey3R13pB6t+0IxPMV8DgHa1l29b6oVJFbkrFT?= =?iso-8859-1?Q?TrmXitYHMjUBrcoSkz4aYz8OzzCMdB43omIkVwuvjuH8nO//rge0V/DycW?= =?iso-8859-1?Q?KYM9mZ01hYP+28UAGuGZl4oZ0Xfyjn+5kMQFRnnzwA9u3lCHQRqg9rqTc3?= =?iso-8859-1?Q?X1KKrwfk9PkEYUtK++adfEoJl3eGQtenAyOIqoXRKki9JoQtFf7VD5YjO4?= =?iso-8859-1?Q?oPASmqYPPUlgPJMNEUAVK3Bbp62N6aqa0YIKDYYkeoDlRd34vahfbDANtM?= =?iso-8859-1?Q?9BjPGFX/a+jBhxK+ySSnp2+LWhbdfxMEmGhjSP++leFXAwDFDB76LbBu23?= =?iso-8859-1?Q?R4/t3BsyT4tJuaiWbEhti8MM2g97Mez/ha4iRCm/Ifun7rlXdvq8sJmAQv?= =?iso-8859-1?Q?Aw/7jbjfWZuuKMtCMWyDTme4JvPm29vsVn6yeAN/hA+QjfdrlV1i3HJ5uL?= =?iso-8859-1?Q?3c8F+zvELwnMDPVjR9AiWyOqMLgS4JJFlsX90dop648VwdUHPPBiTyBas8?= =?iso-8859-1?Q?N0O4WQkeuKoGD4JkuiT+3BHeABhyvvdDFbVVkXc5AcC7M1NVep015LMg66?= =?iso-8859-1?Q?GYaGLG5HSkaFUFGQgZXKQqLGXSm8opog=3D=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:LV3PR11MB8603.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(376014)(1800799024)(366016);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?iso-8859-1?Q?E3zxVme75Q9dfWYw+tw4193fN556nQId0LjgtHBiNslcAlZ7uuT04ZByJ2?= =?iso-8859-1?Q?4vbB1UNylyus7FR1o0CZmOC48mA0k8eqbY24rOttjqg1ojyY0ITMWByvoy?= =?iso-8859-1?Q?D44BYHKUnIMJf80FjPOLEdOOjq0TWhx4EwSwXlqvP0yJgS4gGiYhXliRo7?= =?iso-8859-1?Q?XGRei+5TR0X13740sMnc5mRsmveztC1jtM082DxM8b7jxeXUAbv8rGBuAt?= =?iso-8859-1?Q?MYt2z7VNZcLfZ2DQT4X0UivPkTRmvbiCGkVHYPGFjreLFQgBAeKJJUyDnb?= =?iso-8859-1?Q?9rHjQpu2q8HoOusfym8721lAyfJl43rKLl9Y2a5Ik9SNjNAgEx30D+/yN3?= =?iso-8859-1?Q?kCQoH9tRNF50AVgg09BabNxNhcbyiXfjYgG8sY2t2anSS0Z1tcBWnzx0wN?= =?iso-8859-1?Q?HMev/Okx/QL3F2jpyWsaAqVOXx32Y/JGOOFLt0/Ge/5d0FQeHOMLIgAHRc?= =?iso-8859-1?Q?rlBtoj7vOlsD0WbBMN/6dO2xnx8GJQjyT4qHvc8slYxEYW3ZLkdQznXV88?= =?iso-8859-1?Q?G/AEbofAimryjhWm4hZhZJ7AInVczWOTOGeUkatisWSORJjCvkYjUz4fr0?= =?iso-8859-1?Q?H0c17Qrf/27HvbJSpeHZvdtsOwnULAx8p6npT/5LzdlFC1vomZRJkH7ywt?= =?iso-8859-1?Q?L76OixLEofOeEhMYtCIc6hAe0Lo56Y5ARL4mXKqq6q2qw2/tw0J5h8sgtL?= =?iso-8859-1?Q?7tRG1yoeuAX1W0ZdL5lxtjG04Ws+ZXuo27Hpg79rSfjpo7uEXeReh500eh?= =?iso-8859-1?Q?ZVNzmBIfoqdW0Hlmg1TaREMJIIVOYDi375XcAyNpxrXtiRoRgoO4rruJqK?= =?iso-8859-1?Q?ADFzRXRyVspdQQ7DnVfs3/Ubhh5yhXpo5CKMIasTHjqgPTqvCx9xPFyi/g?= =?iso-8859-1?Q?eER3emZs2IhSyludLKn5WzqwhIt5A2MPbdYBOLOqYU0Xxvx8OfsdpyjwVz?= =?iso-8859-1?Q?FBM9+w3ZeHb8TAFuVx/jJvTHOvPZGZBp2CXEbzErMGvsk7CqmJxZnact6E?= =?iso-8859-1?Q?63BD4lkSDMlBHjUIUln60ucRVjGh35Fxsncop7LOVL3wdFxxdAukI9kg+G?= =?iso-8859-1?Q?uXt0BQQ7ysFaiIAHqCctQh/wkKfHJhkeKO7D3jaktNESabklpUIW6FiLju?= =?iso-8859-1?Q?ZMhA25DXVPMiv2nczB85gOGRslmgJXebc3sxmw9IjidzEYnvact8PxUtNS?= =?iso-8859-1?Q?1RlIZtsRByOMqriZueSkPQyOJKSEIPBbYHO+hgsp5MiGdm0tk+RVHMLmV6?= =?iso-8859-1?Q?jAvYcPFvJXKRHRw4OlZUTrFd36Mc7U8Vc+c9UCZ4fUIZiw4SNc1oQK47KL?= =?iso-8859-1?Q?akbi/qMWVsv9ae6B+TCiNsMcZOjtCxEkJBv2S/ogSQ2Gh9HLOOD+d8GCPb?= =?iso-8859-1?Q?8PM0As7TF6HmNSKFS4+lkcHL9fF76kb4rgQlGIByJj0h0oWkNjfJ1pdLPY?= =?iso-8859-1?Q?FqxbVWK0BfXnxHpxIRpuyhbrkS/GOuqxT8tqBJNPBVO1KozokrlCefe7yI?= =?iso-8859-1?Q?z05STl3diRDP1V0ny2CvgwsTxJjU7loOMR6Hbj49I0FOLnH1XEUwa8j7/4?= =?iso-8859-1?Q?jY9KLCMp593fl/qCI4bgqprNK/XxuSlzgO45iq9Vw3sqHhPJmkSF2qMXAk?= =?iso-8859-1?Q?4Hlf3KtPl469a7Cuf6CQr0Uye2IuFQPkmIknqNRJ+PlyKE7xt9NeHiKQ?= =?iso-8859-1?Q?=3D=3D?= X-MS-Exchange-CrossTenant-Network-Message-Id: 0703af91-de64-4a4d-b0d1-08dd4b3d38f0 X-MS-Exchange-CrossTenant-AuthSource: LV3PR11MB8603.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Feb 2025 08:14:08.0114 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: RoPhIvmaGPyFYnAcoJ+XX8XVsgd9SXF3Slj9lFbcSoKri9NZQ0SnKFkI67D451vhw/1kdPVeYOrDEB8T0oI2ZA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ2PR11MB7519 X-OriginatorOrg: intel.com Hello, kernel test robot noticed a 5.1% improvement of unixbench.throughput on: commit: bc10506d7c3cec7a236483876d5c717875d3d5aa ("filemap: Move prefaulting out of hot write path") https://git.kernel.org/cgit/linux/kernel/git/daveh/devel.git prefault-20250128 testcase: unixbench config: x86_64-rhel-9.4 compiler: gcc-12 test machine: 64 threads 2 sockets Intel(R) Xeon(R) Gold 6346 CPU @ 3.10GHz (Ice Lake) with 256G memory parameters: runtime: 300s nr_task: 100% test: fsbuffer-w cpufreq_governor: performance In addition to that, the commit also has significant impact on the following tests: +------------------+--------------------------------------------------------------------------------+ | testcase: change | will-it-scale: will-it-scale.per_thread_ops 8.8% improvement | | test machine | 384 threads 2 sockets Intel(R) Xeon(R) 6972P (Granite Rapids) with 128G memory | | test parameters | cpufreq_governor=performance | | | mode=thread | | | nr_task=100% | | | test=pwrite1 | +------------------+--------------------------------------------------------------------------------+ Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250212/202502121529.d62a409e-lkp@intel.com ========================================================================================= compiler/cpufreq_governor/kconfig/nr_task/rootfs/runtime/tbox_group/test/testcase: gcc-12/performance/x86_64-rhel-9.4/100%/debian-12-x86_64-20240206.cgz/300s/lkp-icl-2sp9/fsbuffer-w/unixbench commit: v6.13 bc10506d7c ("filemap: Move prefaulting out of hot write path") v6.13 bc10506d7c3cec7a236483876d5 ---------------- --------------------------- %stddev %change %stddev \ | \ 1.33 ± 31% -55.0% 0.60 ± 58% perf-sched.sch_delay.max.ms.pipe_read.vfs_read.ksys_read.do_syscall_64 1360 ± 54% +60.1% 2178 ± 37% perf-sched.wait_and_delay.max.ms.do_task_dead.do_exit.do_group_exit.__x64_sys_exit_group.x64_sys_call 1360 ± 54% +60.1% 2178 ± 37% perf-sched.wait_time.max.ms.do_task_dead.do_exit.do_group_exit.__x64_sys_exit_group.x64_sys_call 32677306 +5.1% 34349550 unixbench.throughput 1889 +4.5% 1975 unixbench.time.user_time 1.211e+10 +5.1% 1.273e+10 unixbench.workload 4.557e+10 +1.7% 4.635e+10 perf-stat.i.branch-instructions 1.04 +1.0% 1.05 perf-stat.i.ipc 0.94 -1.0% 0.93 perf-stat.overall.cpi 1.06 +1.1% 1.07 perf-stat.overall.ipc 5942 -4.0% 5705 perf-stat.overall.path-length 4.548e+10 +1.7% 4.626e+10 perf-stat.ps.branch-instructions 5.46 -5.5 0.00 perf-profile.calltrace.cycles-pp.fault_in_iov_iter_readable.generic_perform_write.generic_file_write_iter.vfs_write.ksys_write 35.65 -3.1 32.55 perf-profile.calltrace.cycles-pp.generic_perform_write.generic_file_write_iter.vfs_write.ksys_write.do_syscall_64 58.13 -2.2 55.93 perf-profile.calltrace.cycles-pp.generic_file_write_iter.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 66.56 -1.7 64.87 perf-profile.calltrace.cycles-pp.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 71.11 -1.5 69.63 perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 77.66 -1.1 76.52 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 79.00 -1.1 77.91 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.write 98.58 -0.1 98.50 perf-profile.calltrace.cycles-pp.write 0.60 +0.0 0.64 perf-profile.calltrace.cycles-pp.setattr_should_drop_suidgid.file_remove_privs_flags.__generic_file_write_iter.generic_file_write_iter.vfs_write 0.66 +0.0 0.70 perf-profile.calltrace.cycles-pp.__cond_resched.generic_perform_write.generic_file_write_iter.vfs_write.ksys_write 0.58 +0.0 0.61 perf-profile.calltrace.cycles-pp.folio_wait_stable.__filemap_get_folio.simple_write_begin.generic_perform_write.generic_file_write_iter 0.61 +0.0 0.65 perf-profile.calltrace.cycles-pp.w_test 0.86 +0.0 0.90 perf-profile.calltrace.cycles-pp.x64_sys_call.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 0.72 +0.0 0.76 perf-profile.calltrace.cycles-pp.__cond_resched.down_write.generic_file_write_iter.vfs_write.ksys_write 0.93 +0.0 0.98 perf-profile.calltrace.cycles-pp.generic_write_check_limits.generic_write_checks.generic_file_write_iter.vfs_write.ksys_write 0.78 +0.0 0.83 perf-profile.calltrace.cycles-pp.__cond_resched.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.76 ± 3% +0.1 0.81 perf-profile.calltrace.cycles-pp.xattr_resolve_name.__vfs_getxattr.cap_inode_need_killpriv.security_inode_need_killpriv.file_remove_privs_flags 0.80 +0.1 0.86 perf-profile.calltrace.cycles-pp.__cond_resched.__filemap_get_folio.simple_write_begin.generic_perform_write.generic_file_write_iter 0.86 +0.1 0.92 perf-profile.calltrace.cycles-pp.folio_mark_dirty.simple_write_end.generic_perform_write.generic_file_write_iter.vfs_write 1.08 +0.1 1.14 perf-profile.calltrace.cycles-pp.rw_verify_area.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.33 ± 2% +0.1 1.40 perf-profile.calltrace.cycles-pp.ktime_get_coarse_real_ts64_mg.current_time.inode_needs_update_time.file_update_time.__generic_file_write_iter 1.47 +0.1 1.55 perf-profile.calltrace.cycles-pp.__fsnotify_parent.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 3.00 +0.1 3.08 perf-profile.calltrace.cycles-pp.__vfs_getxattr.cap_inode_need_killpriv.security_inode_need_killpriv.file_remove_privs_flags.__generic_file_write_iter 2.07 +0.1 2.16 perf-profile.calltrace.cycles-pp.generic_write_checks.generic_file_write_iter.vfs_write.ksys_write.do_syscall_64 1.57 +0.1 1.68 perf-profile.calltrace.cycles-pp.folio_unlock.simple_write_end.generic_perform_write.generic_file_write_iter.vfs_write 1.54 +0.1 1.65 perf-profile.calltrace.cycles-pp.up_write.generic_file_write_iter.vfs_write.ksys_write.do_syscall_64 1.00 +0.1 1.12 perf-profile.calltrace.cycles-pp.balance_dirty_pages_ratelimited_flags.generic_perform_write.generic_file_write_iter.vfs_write.ksys_write 3.67 +0.1 3.79 perf-profile.calltrace.cycles-pp.cap_inode_need_killpriv.security_inode_need_killpriv.file_remove_privs_flags.__generic_file_write_iter.generic_file_write_iter 2.34 +0.1 2.47 perf-profile.calltrace.cycles-pp.down_write.generic_file_write_iter.vfs_write.ksys_write.do_syscall_64 3.06 +0.1 3.19 perf-profile.calltrace.cycles-pp.current_time.inode_needs_update_time.file_update_time.__generic_file_write_iter.generic_file_write_iter 4.44 +0.2 4.60 perf-profile.calltrace.cycles-pp.security_inode_need_killpriv.file_remove_privs_flags.__generic_file_write_iter.generic_file_write_iter.vfs_write 3.42 +0.2 3.59 perf-profile.calltrace.cycles-pp.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 4.23 +0.2 4.44 perf-profile.calltrace.cycles-pp.inode_needs_update_time.file_update_time.__generic_file_write_iter.generic_file_write_iter.vfs_write 5.28 +0.2 5.53 perf-profile.calltrace.cycles-pp.file_update_time.__generic_file_write_iter.generic_file_write_iter.vfs_write.ksys_write 7.41 +0.3 7.69 perf-profile.calltrace.cycles-pp.file_remove_privs_flags.__generic_file_write_iter.generic_file_write_iter.vfs_write.ksys_write 4.92 +0.3 5.22 perf-profile.calltrace.cycles-pp.simple_write_end.generic_perform_write.generic_file_write_iter.vfs_write.ksys_write 0.69 +0.4 1.06 perf-profile.calltrace.cycles-pp.xas_start.xas_load.filemap_get_entry.__filemap_get_folio.simple_write_begin 7.27 +0.4 7.69 perf-profile.calltrace.cycles-pp.copy_page_from_iter_atomic.generic_perform_write.generic_file_write_iter.vfs_write.ksys_write 7.44 +0.5 7.90 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.write 9.73 +0.5 10.20 perf-profile.calltrace.cycles-pp.clear_bhb_loop.write 0.00 +0.5 0.52 ± 2% perf-profile.calltrace.cycles-pp.security_file_permission.rw_verify_area.vfs_write.ksys_write.do_syscall_64 14.06 +0.6 14.64 perf-profile.calltrace.cycles-pp.__generic_file_write_iter.generic_file_write_iter.vfs_write.ksys_write.do_syscall_64 2.19 +0.8 2.96 perf-profile.calltrace.cycles-pp.xas_load.filemap_get_entry.__filemap_get_folio.simple_write_begin.generic_perform_write 5.88 +1.1 7.00 perf-profile.calltrace.cycles-pp.filemap_get_entry.__filemap_get_folio.simple_write_begin.generic_perform_write.generic_file_write_iter 11.08 +1.5 12.60 perf-profile.calltrace.cycles-pp.__filemap_get_folio.simple_write_begin.generic_perform_write.generic_file_write_iter.vfs_write 12.05 +1.6 13.63 perf-profile.calltrace.cycles-pp.simple_write_begin.generic_perform_write.generic_file_write_iter.vfs_write.ksys_write 5.67 -5.7 0.00 perf-profile.children.cycles-pp.fault_in_iov_iter_readable 36.46 -3.2 33.30 perf-profile.children.cycles-pp.generic_perform_write 58.61 -2.2 56.44 perf-profile.children.cycles-pp.generic_file_write_iter 67.18 -1.6 65.54 perf-profile.children.cycles-pp.vfs_write 71.43 -1.5 69.98 perf-profile.children.cycles-pp.ksys_write 78.06 -1.1 76.94 perf-profile.children.cycles-pp.do_syscall_64 79.29 -1.1 78.22 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 98.87 -0.0 98.83 perf-profile.children.cycles-pp.write 0.33 ± 2% +0.0 0.35 perf-profile.children.cycles-pp.__x64_sys_write 0.30 +0.0 0.32 perf-profile.children.cycles-pp.is_bad_inode 0.37 ± 2% +0.0 0.38 perf-profile.children.cycles-pp.entry_SYSCALL_64_safe_stack 0.57 +0.0 0.59 perf-profile.children.cycles-pp.syscall_exit_to_user_mode_prepare 0.30 +0.0 0.32 perf-profile.children.cycles-pp.noop_dirty_folio 0.59 +0.0 0.62 perf-profile.children.cycles-pp.security_file_permission 0.71 +0.0 0.74 perf-profile.children.cycles-pp.setattr_should_drop_suidgid 0.34 +0.0 0.38 perf-profile.children.cycles-pp.inode_to_bdi 1.11 +0.0 1.16 perf-profile.children.cycles-pp.w_test 0.96 +0.0 1.00 perf-profile.children.cycles-pp.x64_sys_call 0.77 +0.0 0.82 perf-profile.children.cycles-pp.folio_wait_stable 1.02 +0.1 1.08 perf-profile.children.cycles-pp.generic_write_check_limits 0.99 +0.1 1.04 perf-profile.children.cycles-pp.folio_mapping 1.06 +0.1 1.12 perf-profile.children.cycles-pp.folio_mark_dirty 0.98 ± 2% +0.1 1.05 perf-profile.children.cycles-pp.xattr_resolve_name 1.44 ± 2% +0.1 1.52 perf-profile.children.cycles-pp.ktime_get_coarse_real_ts64_mg 1.27 +0.1 1.35 perf-profile.children.cycles-pp.rw_verify_area 1.57 +0.1 1.66 perf-profile.children.cycles-pp.__fsnotify_parent 1.63 +0.1 1.72 perf-profile.children.cycles-pp.rcu_all_qs 1.67 +0.1 1.78 perf-profile.children.cycles-pp.folio_unlock 1.64 +0.1 1.75 perf-profile.children.cycles-pp.up_write 2.35 +0.1 2.46 perf-profile.children.cycles-pp.generic_write_checks 3.58 +0.1 3.70 perf-profile.children.cycles-pp.__vfs_getxattr 3.93 +0.1 4.06 perf-profile.children.cycles-pp.cap_inode_need_killpriv 1.20 +0.1 1.33 perf-profile.children.cycles-pp.balance_dirty_pages_ratelimited_flags 2.53 +0.1 2.68 perf-profile.children.cycles-pp.down_write 3.26 +0.1 3.41 perf-profile.children.cycles-pp.current_time 4.68 +0.2 4.85 perf-profile.children.cycles-pp.security_inode_need_killpriv 3.62 +0.2 3.80 perf-profile.children.cycles-pp.syscall_exit_to_user_mode 3.38 +0.2 3.57 perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack 3.74 +0.2 3.96 perf-profile.children.cycles-pp.__cond_resched 4.44 +0.2 4.67 perf-profile.children.cycles-pp.inode_needs_update_time 5.48 +0.3 5.74 perf-profile.children.cycles-pp.file_update_time 4.24 +0.3 4.51 perf-profile.children.cycles-pp.entry_SYSCALL_64 7.71 +0.3 8.01 perf-profile.children.cycles-pp.file_remove_privs_flags 5.22 +0.3 5.54 perf-profile.children.cycles-pp.simple_write_end 0.80 +0.4 1.16 perf-profile.children.cycles-pp.xas_start 7.38 +0.4 7.82 perf-profile.children.cycles-pp.copy_page_from_iter_atomic 9.82 +0.5 10.30 perf-profile.children.cycles-pp.clear_bhb_loop 14.35 +0.6 14.96 perf-profile.children.cycles-pp.__generic_file_write_iter 2.48 +0.8 3.27 perf-profile.children.cycles-pp.xas_load 6.08 +1.2 7.23 perf-profile.children.cycles-pp.filemap_get_entry 11.46 +1.6 13.01 perf-profile.children.cycles-pp.__filemap_get_folio 12.25 +1.6 13.84 perf-profile.children.cycles-pp.simple_write_begin 4.36 -0.1 4.26 perf-profile.self.cycles-pp.generic_perform_write 0.20 ± 2% +0.0 0.22 ± 2% perf-profile.self.cycles-pp.noop_dirty_folio 0.29 +0.0 0.30 perf-profile.self.cycles-pp.folio_wait_stable 0.36 +0.0 0.38 perf-profile.self.cycles-pp.entry_SYSCALL_64_safe_stack 0.49 +0.0 0.52 perf-profile.self.cycles-pp.security_file_permission 0.76 +0.0 0.79 perf-profile.self.cycles-pp.security_inode_need_killpriv 0.24 +0.0 0.27 perf-profile.self.cycles-pp.inode_to_bdi 0.56 +0.0 0.59 perf-profile.self.cycles-pp.folio_mark_dirty 0.61 +0.0 0.64 perf-profile.self.cycles-pp.setattr_should_drop_suidgid 0.84 +0.0 0.88 perf-profile.self.cycles-pp.x64_sys_call 0.84 +0.0 0.88 perf-profile.self.cycles-pp.generic_write_check_limits 0.68 +0.0 0.72 perf-profile.self.cycles-pp.rw_verify_area 0.79 +0.0 0.84 perf-profile.self.cycles-pp.folio_mapping 0.59 ± 3% +0.0 0.64 ± 2% perf-profile.self.cycles-pp.xattr_resolve_name 1.59 +0.0 1.64 perf-profile.self.cycles-pp.generic_file_write_iter 0.78 +0.1 0.83 perf-profile.self.cycles-pp.simple_write_begin 1.16 +0.1 1.21 perf-profile.self.cycles-pp.__generic_file_write_iter 1.22 +0.1 1.27 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe 1.03 +0.1 1.10 perf-profile.self.cycles-pp.entry_SYSCALL_64 1.44 +0.1 1.51 perf-profile.self.cycles-pp.__vfs_getxattr 1.41 +0.1 1.48 perf-profile.self.cycles-pp.generic_write_checks 1.33 ± 2% +0.1 1.40 perf-profile.self.cycles-pp.ktime_get_coarse_real_ts64_mg 1.24 +0.1 1.30 perf-profile.self.cycles-pp.rcu_all_qs 1.81 +0.1 1.88 perf-profile.self.cycles-pp.current_time 1.49 +0.1 1.56 perf-profile.self.cycles-pp.ksys_write 1.46 +0.1 1.54 perf-profile.self.cycles-pp.__fsnotify_parent 1.18 +0.1 1.26 perf-profile.self.cycles-pp.inode_needs_update_time 1.61 +0.1 1.70 perf-profile.self.cycles-pp.down_write 0.85 +0.1 0.95 perf-profile.self.cycles-pp.balance_dirty_pages_ratelimited_flags 1.55 +0.1 1.65 perf-profile.self.cycles-pp.folio_unlock 1.54 +0.1 1.64 perf-profile.self.cycles-pp.up_write 1.89 +0.1 2.00 perf-profile.self.cycles-pp.do_syscall_64 2.42 +0.1 2.52 perf-profile.self.cycles-pp.file_remove_privs_flags 2.10 +0.1 2.24 perf-profile.self.cycles-pp.__cond_resched 2.38 +0.2 2.53 perf-profile.self.cycles-pp.simple_write_end 3.05 +0.2 3.21 perf-profile.self.cycles-pp.syscall_exit_to_user_mode 3.26 +0.2 3.45 perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack 4.02 +0.2 4.27 perf-profile.self.cycles-pp.write 3.78 +0.3 4.07 perf-profile.self.cycles-pp.__filemap_get_folio 5.10 +0.3 5.43 perf-profile.self.cycles-pp.vfs_write 0.60 ± 2% +0.4 0.96 perf-profile.self.cycles-pp.xas_start 3.58 ± 2% +0.4 3.96 ± 2% perf-profile.self.cycles-pp.filemap_get_entry 1.77 +0.4 2.17 perf-profile.self.cycles-pp.xas_load 7.16 +0.4 7.58 perf-profile.self.cycles-pp.copy_page_from_iter_atomic 9.72 +0.5 10.20 perf-profile.self.cycles-pp.clear_bhb_loop *************************************************************************************************** lkp-gnr-2ap2: 384 threads 2 sockets Intel(R) Xeon(R) 6972P (Granite Rapids) with 128G memory ========================================================================================= compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase: gcc-12/performance/x86_64-rhel-9.4/thread/100%/debian-12-x86_64-20240206.cgz/lkp-gnr-2ap2/pwrite1/will-it-scale commit: v6.13 bc10506d7c ("filemap: Move prefaulting out of hot write path") v6.13 bc10506d7c3cec7a236483876d5 ---------------- --------------------------- %stddev %change %stddev \ | \ 14.26 +1.5 15.81 mpstat.cpu.all.usr% 3452706 ± 5% -9.7% 3117051 ± 8% numa-meminfo.node1.Active 3452706 ± 5% -9.7% 3117051 ± 8% numa-meminfo.node1.Active(anon) 863593 ± 5% -9.7% 779394 ± 8% numa-vmstat.node1.nr_active_anon 863592 ± 5% -9.7% 779394 ± 8% numa-vmstat.node1.nr_zone_active_anon 1.112e+09 +8.8% 1.209e+09 will-it-scale.384.threads 2895332 +8.8% 3149461 will-it-scale.per_thread_ops 1.112e+09 +8.8% 1.209e+09 will-it-scale.workload 966386 -3.5% 932439 proc-vmstat.nr_active_anon 1575486 -2.6% 1534047 proc-vmstat.nr_file_pages 702352 ± 2% -5.9% 660903 proc-vmstat.nr_shmem 966386 -3.5% 932439 proc-vmstat.nr_zone_active_anon 0.25 ± 53% -45.1% 0.14 ± 9% perf-sched.sch_delay.avg.ms.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.__x64_sys_pwrite64 8.04 ± 38% -42.3% 4.64 ± 16% perf-sched.sch_delay.max.ms.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter 0.13 ± 45% -38.8% 0.08 ± 2% perf-sched.total_sch_delay.average.ms 0.50 ± 51% -45.5% 0.27 ± 9% perf-sched.wait_and_delay.avg.ms.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.__x64_sys_pwrite64 839.33 ± 5% +11.6% 936.83 ± 3% perf-sched.wait_and_delay.count.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.__x64_sys_pwrite64 873.83 ± 6% -18.4% 713.17 ± 6% perf-sched.wait_and_delay.count.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter 16.08 ± 38% -42.3% 9.28 ± 16% perf-sched.wait_and_delay.max.ms.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter 0.25 ± 49% -45.9% 0.14 ± 10% perf-sched.wait_time.avg.ms.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.__x64_sys_pwrite64 8.04 ± 38% -42.3% 4.64 ± 16% perf-sched.wait_time.max.ms.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter 3.505e+11 +3.6% 3.632e+11 perf-stat.i.branch-instructions 0.02 -0.0 0.02 ± 2% perf-stat.i.branch-miss-rate% 0.74 -4.3% 0.71 perf-stat.i.cpi 1.266e+12 -1.3% 1.25e+12 perf-stat.i.cpu-cycles 1.719e+12 +3.2% 1.775e+12 perf-stat.i.instructions 1.36 +4.6% 1.42 perf-stat.i.ipc 0.00 ± 8% -0.0 0.00 ± 12% perf-stat.overall.branch-miss-rate% 0.74 -4.4% 0.70 perf-stat.overall.cpi 1.36 +4.6% 1.42 perf-stat.overall.ipc 466638 -5.1% 442782 perf-stat.overall.path-length 3.493e+11 +3.6% 3.619e+11 perf-stat.ps.branch-instructions 1.261e+12 -1.3% 1.245e+12 perf-stat.ps.cpu-cycles 1.713e+12 +3.2% 1.769e+12 perf-stat.ps.instructions 5.188e+14 +3.2% 5.355e+14 perf-stat.total.instructions 45.78 -5.2 40.57 perf-profile.calltrace.cycles-pp.generic_perform_write.shmem_file_write_iter.vfs_write.__x64_sys_pwrite64.do_syscall_64 59.00 -4.3 54.71 perf-profile.calltrace.cycles-pp.shmem_file_write_iter.vfs_write.__x64_sys_pwrite64.do_syscall_64.entry_SYSCALL_64_after_hwframe 67.90 -3.5 64.37 perf-profile.calltrace.cycles-pp.vfs_write.__x64_sys_pwrite64.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_pwrite 75.33 -2.8 72.55 perf-profile.calltrace.cycles-pp.__x64_sys_pwrite64.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_pwrite 11.38 -2.3 9.10 ± 2% perf-profile.calltrace.cycles-pp.shmem_write_begin.generic_perform_write.shmem_file_write_iter.vfs_write.__x64_sys_pwrite64 81.99 -2.0 79.97 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_pwrite 10.15 -1.9 8.22 ± 2% perf-profile.calltrace.cycles-pp.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter.vfs_write 83.41 -1.8 81.63 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__libc_pwrite 4.16 -1.2 2.98 ± 2% perf-profile.calltrace.cycles-pp.filemap_get_entry.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter 94.89 -0.5 94.38 perf-profile.calltrace.cycles-pp.__libc_pwrite 1.66 ± 2% -0.3 1.38 ± 5% perf-profile.calltrace.cycles-pp.folio_mark_accessed.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter 0.81 -0.2 0.59 ± 3% perf-profile.calltrace.cycles-pp.xas_load.filemap_get_entry.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write 0.60 -0.1 0.52 perf-profile.calltrace.cycles-pp.file_remove_privs_flags.shmem_file_write_iter.vfs_write.__x64_sys_pwrite64.do_syscall_64 0.71 ± 2% +0.1 0.77 ± 3% perf-profile.calltrace.cycles-pp.__cond_resched.vfs_write.__x64_sys_pwrite64.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.63 ± 2% +0.1 0.71 ± 2% perf-profile.calltrace.cycles-pp.generic_write_check_limits.generic_write_checks.shmem_file_write_iter.vfs_write.__x64_sys_pwrite64 0.78 ± 8% +0.1 0.90 ± 4% perf-profile.calltrace.cycles-pp.syscall_return_via_sysret.__libc_pwrite 0.70 ± 4% +0.1 0.83 ± 8% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_safe_stack.__libc_pwrite 1.44 +0.1 1.58 ± 3% perf-profile.calltrace.cycles-pp.folio_mark_dirty.shmem_write_end.generic_perform_write.shmem_file_write_iter.vfs_write 1.71 +0.2 1.88 perf-profile.calltrace.cycles-pp.fput.__x64_sys_pwrite64.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_pwrite 2.29 ± 3% +0.2 2.46 ± 2% perf-profile.calltrace.cycles-pp.current_time.inode_needs_update_time.file_update_time.shmem_file_write_iter.vfs_write 3.78 ± 2% +0.2 4.00 ± 2% perf-profile.calltrace.cycles-pp.file_update_time.shmem_file_write_iter.vfs_write.__x64_sys_pwrite64.do_syscall_64 1.58 ± 2% +0.2 1.79 ± 3% perf-profile.calltrace.cycles-pp.generic_write_checks.shmem_file_write_iter.vfs_write.__x64_sys_pwrite64.do_syscall_64 3.34 +0.2 3.58 perf-profile.calltrace.cycles-pp.down_write.shmem_file_write_iter.vfs_write.__x64_sys_pwrite64.do_syscall_64 3.16 ± 2% +0.2 3.40 ± 2% perf-profile.calltrace.cycles-pp.inode_needs_update_time.file_update_time.shmem_file_write_iter.vfs_write.__x64_sys_pwrite64 3.78 ± 2% +0.2 4.03 ± 3% perf-profile.calltrace.cycles-pp.fdget.__x64_sys_pwrite64.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_pwrite 2.40 +0.3 2.71 ± 2% perf-profile.calltrace.cycles-pp.folio_unlock.shmem_write_end.generic_perform_write.shmem_file_write_iter.vfs_write 1.67 ± 3% +0.4 2.06 ± 4% perf-profile.calltrace.cycles-pp.__fsnotify_parent.vfs_write.__x64_sys_pwrite64.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.94 +0.4 2.36 perf-profile.calltrace.cycles-pp.up_write.shmem_file_write_iter.vfs_write.__x64_sys_pwrite64.do_syscall_64 0.00 +0.5 0.54 ± 3% perf-profile.calltrace.cycles-pp.testcase 3.36 +0.6 3.97 perf-profile.calltrace.cycles-pp.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_pwrite 7.16 +0.8 7.98 ± 2% perf-profile.calltrace.cycles-pp.shmem_write_end.generic_perform_write.shmem_file_write_iter.vfs_write.__x64_sys_pwrite64 16.72 +1.0 17.71 ± 2% perf-profile.calltrace.cycles-pp.copy_page_from_iter_atomic.generic_perform_write.shmem_file_write_iter.vfs_write.__x64_sys_pwrite64 14.98 +1.6 16.57 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.__libc_pwrite 46.84 -5.4 41.44 perf-profile.children.cycles-pp.generic_perform_write 60.00 -4.2 55.76 perf-profile.children.cycles-pp.shmem_file_write_iter 68.74 -3.4 65.33 perf-profile.children.cycles-pp.vfs_write 75.77 -2.7 73.02 perf-profile.children.cycles-pp.__x64_sys_pwrite64 11.62 -2.3 9.35 ± 2% perf-profile.children.cycles-pp.shmem_write_begin 82.48 -2.0 80.46 perf-profile.children.cycles-pp.do_syscall_64 10.63 -2.0 8.62 ± 2% perf-profile.children.cycles-pp.shmem_get_folio_gfp 83.72 -1.8 81.92 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 4.37 -1.2 3.15 ± 2% perf-profile.children.cycles-pp.filemap_get_entry 1.18 -0.3 0.87 perf-profile.children.cycles-pp.xas_load 1.77 ± 2% -0.3 1.50 ± 4% perf-profile.children.cycles-pp.folio_mark_accessed 0.79 -0.2 0.58 ± 2% perf-profile.children.cycles-pp.xas_start 0.24 ± 4% -0.1 0.14 ± 3% perf-profile.children.cycles-pp.balance_dirty_pages_ratelimited 0.66 -0.1 0.59 perf-profile.children.cycles-pp.file_remove_privs_flags 0.20 ± 2% -0.0 0.17 ± 2% perf-profile.children.cycles-pp.ksys_write 0.20 ± 2% -0.0 0.18 ± 2% perf-profile.children.cycles-pp.record__pushfn 0.20 ± 2% -0.0 0.18 ± 2% perf-profile.children.cycles-pp.write 0.20 ± 2% -0.0 0.18 ± 2% perf-profile.children.cycles-pp.writen 0.05 ± 7% +0.0 0.07 perf-profile.children.cycles-pp.perf_mmap__read_head 0.05 +0.0 0.07 perf-profile.children.cycles-pp.ring_buffer_read_head 0.44 +0.0 0.48 ± 3% perf-profile.children.cycles-pp.noop_dirty_folio 0.49 ± 3% +0.0 0.53 perf-profile.children.cycles-pp.syscall_exit_to_user_mode_prepare 0.65 ± 3% +0.1 0.73 ± 3% perf-profile.children.cycles-pp.testcase 0.72 +0.1 0.81 perf-profile.children.cycles-pp.generic_write_check_limits 0.85 ± 8% +0.1 0.97 ± 4% perf-profile.children.cycles-pp.syscall_return_via_sysret 0.71 ± 3% +0.1 0.85 ± 8% perf-profile.children.cycles-pp.entry_SYSCALL_64_safe_stack 1.72 +0.2 1.89 ± 3% perf-profile.children.cycles-pp.folio_mark_dirty 1.78 +0.2 1.95 perf-profile.children.cycles-pp.fput 2.46 ± 3% +0.2 2.64 ± 2% perf-profile.children.cycles-pp.current_time 3.34 ± 2% +0.2 3.57 ± 2% perf-profile.children.cycles-pp.inode_needs_update_time 3.92 ± 2% +0.2 4.16 ± 3% perf-profile.children.cycles-pp.fdget 1.80 ± 2% +0.2 2.04 ± 2% perf-profile.children.cycles-pp.generic_write_checks 3.53 +0.2 3.78 perf-profile.children.cycles-pp.down_write 2.50 +0.3 2.82 ± 2% perf-profile.children.cycles-pp.folio_unlock 3.43 +0.4 3.81 ± 2% perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack 1.79 ± 3% +0.4 2.19 ± 4% perf-profile.children.cycles-pp.__fsnotify_parent 2.01 +0.4 2.44 perf-profile.children.cycles-pp.up_write 3.51 +0.6 4.14 perf-profile.children.cycles-pp.syscall_exit_to_user_mode 7.58 +0.9 8.43 ± 2% perf-profile.children.cycles-pp.shmem_write_end 8.38 +0.9 9.26 perf-profile.children.cycles-pp.entry_SYSCALL_64 16.96 +1.0 17.97 ± 2% perf-profile.children.cycles-pp.copy_page_from_iter_atomic 3.15 -0.9 2.24 perf-profile.self.cycles-pp.filemap_get_entry 3.72 -0.6 3.12 perf-profile.self.cycles-pp.shmem_get_folio_gfp 1.03 -0.2 0.81 ± 2% perf-profile.self.cycles-pp.shmem_write_begin 1.53 ± 2% -0.2 1.34 ± 3% perf-profile.self.cycles-pp.folio_mark_accessed 0.56 -0.2 0.39 ± 3% perf-profile.self.cycles-pp.xas_start 0.50 ± 4% -0.1 0.37 ± 2% perf-profile.self.cycles-pp.xas_load 0.58 -0.1 0.51 ± 2% perf-profile.self.cycles-pp.file_remove_privs_flags 0.05 +0.0 0.07 perf-profile.self.cycles-pp.ring_buffer_read_head 0.40 ± 4% +0.0 0.44 perf-profile.self.cycles-pp.syscall_exit_to_user_mode_prepare 0.52 ± 3% +0.1 0.58 ± 4% perf-profile.self.cycles-pp.testcase 0.56 +0.1 0.64 perf-profile.self.cycles-pp.generic_write_check_limits 0.78 +0.1 0.86 ± 2% perf-profile.self.cycles-pp.folio_mark_dirty 0.94 ± 3% +0.1 1.02 ± 4% perf-profile.self.cycles-pp.rw_verify_area 0.85 ± 9% +0.1 0.97 ± 4% perf-profile.self.cycles-pp.syscall_return_via_sysret 1.06 ± 2% +0.1 1.19 ± 3% perf-profile.self.cycles-pp.generic_write_checks 0.68 ± 4% +0.1 0.82 ± 8% perf-profile.self.cycles-pp.entry_SYSCALL_64_safe_stack 1.63 +0.2 1.80 perf-profile.self.cycles-pp.fput 1.63 ± 3% +0.2 1.81 ± 3% perf-profile.self.cycles-pp.shmem_file_write_iter 1.75 +0.2 1.97 ± 2% perf-profile.self.cycles-pp.__x64_sys_pwrite64 1.32 ± 4% +0.2 1.55 ± 4% perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe 3.69 ± 2% +0.2 3.93 ± 3% perf-profile.self.cycles-pp.fdget 2.35 ± 2% +0.3 2.64 ± 2% perf-profile.self.cycles-pp.down_write 2.30 +0.3 2.59 ± 3% perf-profile.self.cycles-pp.folio_unlock 1.59 ± 3% +0.3 1.88 ± 3% perf-profile.self.cycles-pp.__fsnotify_parent 3.17 ± 2% +0.4 3.54 ± 3% perf-profile.self.cycles-pp.shmem_write_end 3.35 ± 2% +0.4 3.74 ± 3% perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack 1.84 +0.4 2.25 perf-profile.self.cycles-pp.up_write 4.57 +0.4 4.99 ± 2% perf-profile.self.cycles-pp.vfs_write 3.04 +0.6 3.60 perf-profile.self.cycles-pp.syscall_exit_to_user_mode 8.42 +0.9 9.29 perf-profile.self.cycles-pp.__libc_pwrite 16.42 +1.0 17.45 perf-profile.self.cycles-pp.copy_page_from_iter_atomic 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