From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.15]) (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 640A21E885A; Mon, 21 Apr 2025 05:45:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=192.198.163.15 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745214316; cv=fail; b=FFiSMHScViIUmq78NelQLMg80+rg+4ciJr7xYNHaWEe1pHArLmYCByfcZ7M2IDZmE9WdcOc0XXXajAGGDAhjJ/Be0i/BT9Vqk/1agWrrOwZ6dJFrKnU6mrcPOjjURkvpPu6mNKgRDJ1DJs+WrKEkIfFRUUEwAm83x2TzUGu6/ZQ= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745214316; c=relaxed/simple; bh=VZoBGtBatv7zQtZHWsu4dfiOvdrxfqN2thZQBTLZwqI=; h=Date:From:To:CC:Subject:Message-ID:Content-Type: Content-Disposition:MIME-Version; b=oU6NI7uQB7zk5hquTluWnBeeVPzkaQ1W5xyLUQBjex0ala6jObwxfL3Bmie9hBCcmdHlAh7wTyH7mK6Htx8ug33RGs/Sh5XlHOq6FuD3bL/RW1auUG5+vOHrx2Rpurgp2aDqYf3OSR6coPcyX+mwpsuNGx4Iw2bueWr63uAJr0Q= 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=YsKwvbrs; arc=fail smtp.client-ip=192.198.163.15 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="YsKwvbrs" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1745214313; x=1776750313; h=date:from:to:cc:subject:message-id: content-transfer-encoding:mime-version; bh=VZoBGtBatv7zQtZHWsu4dfiOvdrxfqN2thZQBTLZwqI=; b=YsKwvbrst93f/wStA0yVLrmGjOsdO5j6Vft8muKS5x+ZJ73Ve4QyuLrR CEztNQHkYedk4/jpY6zpf0oHIOQpXUhd+TwrwhDlMUANoRzSL+ki/OCF6 WEEEoukz73A5NXFethGJOmV2dCnw92VcCyZ+Wv/ysZz+2Nx8VhDheRToF DsrrVythYJlgJQ1Cn2FHZvfRg1evgGJL7fwfknbXvsIq3Ih42bqMkZEf/ IuSQ43bUjRmjHBQxgfPiOm/+nZv2mXo+N5vz7YqBYegx5/XZRiZDb3MlU bkyloVHsMgaA4KGzxm7jsHKGBGi6xQv3w9EXf6Py/s7GCboHzjwmET8My g==; X-CSE-ConnectionGUID: AE7rDQcqTPOE3z6zYr+4aw== X-CSE-MsgGUID: MDkYsj1xTzKRYRg2COey/g== X-IronPort-AV: E=McAfee;i="6700,10204,11409"; a="46862725" X-IronPort-AV: E=Sophos;i="6.15,227,1739865600"; d="scan'208";a="46862725" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Apr 2025 22:45:12 -0700 X-CSE-ConnectionGUID: YUtvwAvITOisfqxACNRS/A== X-CSE-MsgGUID: ZbTmRVSsS9eoD64gtBad6Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,227,1739865600"; d="scan'208";a="162585839" Received: from orsmsx903.amr.corp.intel.com ([10.22.229.25]) by orviesa002.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Apr 2025 22:45:12 -0700 Received: from ORSMSX903.amr.corp.intel.com (10.22.229.25) by ORSMSX903.amr.corp.intel.com (10.22.229.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.14; Sun, 20 Apr 2025 22:45:12 -0700 Received: from orsedg603.ED.cps.intel.com (10.7.248.4) by ORSMSX903.amr.corp.intel.com (10.22.229.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.14 via Frontend Transport; Sun, 20 Apr 2025 22:45:12 -0700 Received: from NAM11-CO1-obe.outbound.protection.outlook.com (104.47.56.170) by edgegateway.intel.com (134.134.137.100) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.44; Sun, 20 Apr 2025 22:45:11 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=DL579+rIf/fQZYASulCZw48OOVniPGWeyMmUFVLA1HxT9LwHlmX1kiixABb5cTIOYQszsbS8p3VCWB+hMXkcdiRJFJKxDYpzIpc4m9lCTAZ1RH1WEoo3A3QcK7vJHVkNj2Bpty+Fc0dW4cW/yCDfqXst53nP3C9K/Ua1sKP2E12zTLiAyAfW6uhi7VrXz/VdAkrggMDxTjY7B8cmtG83/QNL7fNWxIxZK+KUDauDZlI/q9GTeMXlH2BlD8kr6NJFuZr9IqdEJvwVh008ofMEGibVMAO8h7rAyWsbtyFzEWqZXYYWyZQaxJj1c90RuILZLb2OThALN0sXwiwr9S5x9Q== 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=ifQaA1vh67IHMbBNoFs1yRh5ESURBsdztmPSV1tQ5jc=; b=MfftyAwy85QSUFQ8Vy2WIAOPpqGFa7G+0hA6Md+bhIcRo89l6khVOnlA33ULkGJ/jh3OCzRV3Fb1twHTCMg0mD66BPlP30e0XAOPiZkrKaYp3eyhovqdTyKiIa2axpSilCnhYjBGRIe42XqmTNUMbBOQNsQrMIrS4AIhFZ5HH93PZAt/n3CBic4ttaDJb8IaS2XH2mwX45iMMmPyJaPPWT9s2Wp9MlnHugVkeUpjCt5T3D2C+hwTKn9p4FkFyqmD0k/O+VBucMIiW8Qo1MFdi+inSEsLZ2VNRofC99Im6Skmou6+q6218PVhb0y/NcqjXSE4dVrWelgJsRdo9vo4sw== 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 CH3PR11MB8774.namprd11.prod.outlook.com (2603:10b6:610:1cd::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8655.32; Mon, 21 Apr 2025 05:44:27 +0000 Received: from LV3PR11MB8603.namprd11.prod.outlook.com ([fe80::4622:29cf:32b:7e5c]) by LV3PR11MB8603.namprd11.prod.outlook.com ([fe80::4622:29cf:32b:7e5c%4]) with mapi id 15.20.8655.031; Mon, 21 Apr 2025 05:44:27 +0000 Date: Mon, 21 Apr 2025 13:44:18 +0800 From: kernel test robot To: NeilBrown CC: , , , Chuck Lever , Jeff Layton , , Subject: [linus:master] [nfsd] eccbbc7c00: dbench.max_latency 99.9% improvement Message-ID: <202504211304.eb2ca0c2-lkp@intel.com> Content-Type: text/plain; charset="iso-8859-1" Content-Disposition: inline Content-Transfer-Encoding: 8bit X-ClientProxiedBy: KU0P306CA0100.MYSP306.PROD.OUTLOOK.COM (2603:1096:d10:22::7) To LV3PR11MB8603.namprd11.prod.outlook.com (2603:10b6:408:1b6::9) Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV3PR11MB8603:EE_|CH3PR11MB8774:EE_ X-MS-Office365-Filtering-Correlation-Id: b3868266-3539-40bf-8645-08dd80979434 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|376014|1800799024; X-Microsoft-Antispam-Message-Info: =?iso-8859-1?Q?WTRzC67ElS/QP+Zoye+CD1K0KeuDr1jcx8e8/fge6+zen733kiRChH7Lc0?= =?iso-8859-1?Q?S1JoH/CreSXQyeE8+TdSJ5wO+h/2tp1LuEhXax1H28Pd1Ne2T4sVjQo5QN?= =?iso-8859-1?Q?YyytPkwoB/ewQhbxev/oYUFhrSSypimNwuFXXaruMVHIvpADne6Up8Lh08?= =?iso-8859-1?Q?3HSL/ALtV1TD9U4RQcM8dwXk+Of3BHar0aFPxBRIVu1q4PCKXUDouzFc+I?= =?iso-8859-1?Q?AwRht9YTzhMtH46b9X4G3Qhvu4PeCUWo92Z9OGg1bAbgV27F9DxQSdyU+K?= =?iso-8859-1?Q?3xtZW+ytMBRTOko6/5RkYknYevncMJiAeRf2pz6df+gGwUMqAeONlTP3AT?= =?iso-8859-1?Q?aWsQLVhwz4Adjw24XjxTY60SU1dibStBOarcfWfbwmHh9HRbH2JImBPJVZ?= =?iso-8859-1?Q?rcXrm1dLBV9FbvVatdgAF7RIJLQ/uj7tzlbSXwQ8Ipee34sMOn7bW1/Iaz?= =?iso-8859-1?Q?teWw682PJ2xg85f7n88hKMfAdrMDSqlF/OEQ72+10AHf9woZ+gmdAFgcck?= =?iso-8859-1?Q?XH658l6rF25LlDGgbuDjJVETnAC22Uk6IJ8yPc9yPR5lxVDIAreLxdRdZ5?= =?iso-8859-1?Q?Lp6BvzObmYqqz3hNsDzivQsqhd3T6TATJsA2GPBvBsVDlBRjb/4QeOOu1p?= =?iso-8859-1?Q?xIf5EBfzX7eFZAGWl7o+YzHTRTdECl0qzLRzHt6usUCpzRoh0elIx0eYd+?= =?iso-8859-1?Q?LVe8oVxPuq0vU2XjAX9dM9swVa8P7T14QreaBhcjnLOzmdTCrSBh9tdp1O?= =?iso-8859-1?Q?kAbhkRqdFyVPIyuQFBjUjDzQv23IMe4N4qBfLzjHSyAvH3ej4D5HeocCpe?= =?iso-8859-1?Q?W4AEb6ZEs8PTWmGXGVoVi746ojfRmun7APHw/oBVA9x4L6Mb8tIY9pVtx9?= =?iso-8859-1?Q?0XHeiaIt+NUL/2Wcc9ZX5M2ut/G0p6PPoLq+nhKvjYExXt8YwLLIHsyCPQ?= =?iso-8859-1?Q?0YM3UcaKfydY/F6Eqi6bf9QDqj4IwuAqNKohRYl1gjbg+61HS5A3gTlCWz?= =?iso-8859-1?Q?X9Fu55i28kofqtpsQQdMZi3e1Jo25lOvK+E3E+VXNz9Bk55SpvhEDP++oN?= =?iso-8859-1?Q?5y5IwJqGo9lb18oa0DDWt472ybko1fwnYy9joWtHWQ0UdJSNtOcrmdx3d2?= =?iso-8859-1?Q?1loOFxD9yRit1K0lLMOn+aPPraz1uG8q67KS+G+sC2yDobXW2L27jz7fbc?= =?iso-8859-1?Q?HasIa4IYF/wUc3F3unNQ8KjwTGhsUNBwpk/SsBb1lYceKgwc687cLq5FcZ?= =?iso-8859-1?Q?hgEfdakxIBe/TPZBRYjfZXPxX/hPZnSp6Ahb1NotGMuIzJAGpiXK4cQ8gx?= =?iso-8859-1?Q?rQvL8qkdk21SwcZ9IfaryLkZlz192oST2d42fr37TuejXw+l0IrlRbIoDi?= =?iso-8859-1?Q?Gbh1jHr8T3q+MmCJVNAL4L7x+5m2vKLMyH7KCflrIzj/7sICZa3mFNN0gU?= =?iso-8859-1?Q?ecWc1ZurFxwuDKTo?= 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)(366016)(376014)(1800799024);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?iso-8859-1?Q?kDj92lMb2/qcmX5WrVbAvuWx06MXOoa7POh7s7Mx5b3wua/rc1qFKrrFNy?= =?iso-8859-1?Q?g1EwB9O/Mj72Qod1ph5utGFfQbnAt8p5gp5U7abe3Qn4easxL7pheaM1DN?= =?iso-8859-1?Q?IJNhB589G2eFNAU0dCu2Jn2D965QZkEGIxRcQKhjQyAv6reInKsur4VXPY?= =?iso-8859-1?Q?9Qq1SVO3n1z+2IsNCSYq7ghU0XcLRWUQWX0fONO7tYiajvHvsi4LOBhlyJ?= =?iso-8859-1?Q?el8DcQ3uZnfvhaZQ9OOp7K5aRiPq8MpJgqxSR+aMDurLjXYliLLvrBBFVW?= =?iso-8859-1?Q?rfSwLdkP74Q1cWhb2wSDtSTZneNfFRmX/D71fmpmA4HxtgpOF6xI+Pjv8d?= =?iso-8859-1?Q?zl4zEzP5buGwMcoTFV+MiepHCFtYFAPlFchKKozUwN8fhrQg2NAenHFWWi?= =?iso-8859-1?Q?0VnZTTl7g/37HTc7x9Ppm0ZayY52X4/zp3p1Z5UsJ8zZ2tixYuEJCisFFO?= =?iso-8859-1?Q?ytaEuGau8I0NIcVEJ6qT2Zcy2LAoM6LCbQ5m2ZVRA9M1vzIbwLIasou5v3?= =?iso-8859-1?Q?GrHeFTN7OJ+XXLIIj0yBTEjvw+EYyNuw6LtGdpDgawRpZtvs/zXZJRv5Nd?= =?iso-8859-1?Q?+s+u+m0r/vktmbnKx0d60n54XvZf/I//QZq6NJpBorGoTY1dVxR7tRqHv8?= =?iso-8859-1?Q?P0glHaAg/quhByVp1JL+DVsGBYQS8zk1e0f6LsWHm/X0c9SXrKM5e8aoYy?= =?iso-8859-1?Q?zUwioKiAjlISL1Rs/8B95aXoyQkfGd8xJ9JH02mZa/dMC6E6JEkcKWhQez?= =?iso-8859-1?Q?ocsuhobKghsyjHCQKX1dGbjaWKECkhEG6h2mY74FQggq2E3DXm6UY4wRvn?= =?iso-8859-1?Q?C2raQD1FfB0+KxVHEY/4OIegqIHi0bfmkMaxsyFDfJkOJjgVRQlSA71Z4S?= =?iso-8859-1?Q?lF/mtCWmhfRpZ96FwmX2rAXWHsXJE7moTS75pBf5x0b/U6/uCN1LKmpnKr?= =?iso-8859-1?Q?jXQfEWx6CxIklflhJMm1qaugoAanR6HdhKrsMPFs9bWHivWOxrws7IqghK?= =?iso-8859-1?Q?yllOd7MXT+4L/zzOchCYU8hEx9eqoMImBysM76/M8TTI+lf00BgTB3klo5?= =?iso-8859-1?Q?s+BNbZXhejmIuGGzhkEDi/z6kjowtII4WDlBpel2TvXp/NIFs/O+ZzE3t6?= =?iso-8859-1?Q?PiMV5A61N5XpsmKIl+lhQygChWYjddQucmVF9kxkvL45l2mz/W+v3sCaHu?= =?iso-8859-1?Q?yVd1KkULfqb5Dh63Gk+YNKetkgan9pPke4DMup0uSjt96zqo3zbguW3xAe?= =?iso-8859-1?Q?mD3qx63A6i5xCPnKVwtnuA1AikrMad324A9s5uwYVDOmclVcFDYUmwpjs6?= =?iso-8859-1?Q?lPdPLPLndpVIjXLSXy3/uJWfleA/W7vy32Jj1oyOTUthSTV5SrLcSi52T2?= =?iso-8859-1?Q?Lu2dnTD14cZKJjfBmtf4xowXRI9ORwr7qkn2XLD6fW7S3V1ygYEaEUt4Hy?= =?iso-8859-1?Q?29ad2Ml/7jLqV4qq2LGraVevQArnhj4ZBE0HxN324eTyCoXWNGEtjo3YiQ?= =?iso-8859-1?Q?4VvQKUJfgpgSMiFSm9Cf7odfMNtI6XuQKuc529K8/ZLj8v+Mk6KSIZiKii?= =?iso-8859-1?Q?m+KuOwDyk3MyNkcFQkbAi9WjL9GM5U+HyD8n+hloIHmT2lUB621vWOXrMJ?= =?iso-8859-1?Q?FN/4ScdaivSyO9Ol9vLLOk8w5gB3ZjxVIhnmWn+CZrdOnV/1YnwSPuUQ?= =?iso-8859-1?Q?=3D=3D?= X-MS-Exchange-CrossTenant-Network-Message-Id: b3868266-3539-40bf-8645-08dd80979434 X-MS-Exchange-CrossTenant-AuthSource: LV3PR11MB8603.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Apr 2025 05:44:27.2406 (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: 7ICy1PWm8Hb+sVssKiG3c1Itlfx5DBoWp0/r6u3EiaH/RaBRb3k2yddHLYk0n3Co7+16z9gAGAK0zmq0+CWgEg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR11MB8774 X-OriginatorOrg: intel.com Hello, kernel test robot noticed a 99.9% improvement of dbench.max_latency on: commit: eccbbc7c00a5aae5e704d4002adfaf4c3fa4b30d ("nfsd: don't use sv_nrthreads in connection limiting calculations.") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master testcase: dbench config: x86_64-rhel-9.4 compiler: gcc-12 test machine: 224 threads 4 sockets Intel(R) Xeon(R) Platinum 8380H CPU @ 2.90GHz (Cooper Lake) with 192G memory parameters: nr_threads: 100% cpufreq_governor: performance disk: 1HDD fs: btrfs fs2: nfs Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250421/202504211304.eb2ca0c2-lkp@intel.com ========================================================================================= compiler/cpufreq_governor/disk/fs2/fs/kconfig/nr_threads/rootfs/tbox_group/testcase: gcc-12/performance/1HDD/nfs/btrfs/x86_64-rhel-9.4/100%/debian-12-x86_64-20240206.cgz/lkp-cpl-4sp2/dbench commit: de71d4e211 ("nfsd: fix legacy client tracking initialization") eccbbc7c00 ("nfsd: don't use sv_nrthreads in connection limiting calculations.") de71d4e211eddb67 eccbbc7c00a5aae5e704d4002ad ---------------- --------------------------- fail:runs %reproduction fail:runs | | | 10:10 -100% :10 stderr.has_stderr 10:10 -100% :10 stderr.nfsproc3_create_3_failed_in_nfsio_create %stddev %change %stddev \ | \ 71006 -99.9% 35.66 ± 7% dbench.max_latency 71006 -99.9% 35.66 ± 7% dbench.max_latency_harmonic_mean 1.11 +0.1 1.16 perf-stat.i.branch-miss-rate% 80903221 +6.3% 86014278 ± 2% perf-stat.i.branch-misses 1.10 +0.1 1.16 perf-stat.overall.branch-miss-rate% 79601951 +6.3% 84615085 ± 2% perf-stat.ps.branch-misses 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