From nobody Fri Oct 3 12:16:37 2025 Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) (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 2E13F2E8E13 for ; Tue, 2 Sep 2025 08:09:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=205.220.177.32 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756800550; cv=fail; b=Xx8EpNUnuuLdErj4agry+nsYHscjZCXEobUGrSYxORj2yESgEo39Cfz9O1j/goaYr5ua3Y2oMrOQGWyeKdASc6IqJsf88yKP5SbIbcIaRpZofxYMBUebyZb9ApNTMpG+8v6yJDpLB6kP4XnKsh2v+GfiOSh7E4XpN4hkP5uXP2Y= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756800550; c=relaxed/simple; bh=y/dOUzuqy6fvohTiGnnGm76eXuq/V72FlFIWkGVpVF0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: Content-Type:MIME-Version; b=lMLNCSX0WnJ4s/Liqc/4mno3I8aeimPk4Yh6gmBzZFtAb1XQmqflaBJEyTZBs4F4JG79U1ldbFecmIfq7qFTHVWKEoXxXbBNkKJLAg0FLWe6hGaQNpmSI2nP5bBQKn/Fz/xMiPCmusy1tGp5TaqePDguey8AnNO2heV1w1mT0xo= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com; spf=pass smtp.mailfrom=oracle.com; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b=XlLQSRdh; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b=igyBpzE6; arc=fail smtp.client-ip=205.220.177.32 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oracle.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="XlLQSRdh"; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b="igyBpzE6" Received: from pps.filterd (m0333520.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 5826fnEh007450; Tue, 2 Sep 2025 08:08:44 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s= corp-2025-04-25; bh=eNh3Wby6z7ngc/ypX4XiPlFJRohHuZODIe5ylj1io+c=; b= XlLQSRdhkXjiGkwaArxidHYQBiqryejK1Zrm5ZT3uYL+uuITmVcRSN8/sMsDdotx cXdD3XjSZT3Fb8TzUCnCAnrk/J1zu3mtRIpn7AYdLqHnoqPYDqtGa9uQ+oGbeUnj hOJ/QuyNWIP+ymDUfXCxc643LpjY2KLTJfTDSQQadHlDnQPmJ2P/aIudlXBRFN0b yRad9QF1vdpltxLIXB0+n3f89UusEXhOlh03uQXqEdRHUDB7tfELhHXMh1tfjdZL QgcDjCA/yrXAogfwOXWZxG9/af1dJKaA88HhbOwIh1fXJQ8oJv+9PHwkt4eqcP9B ltxQJ3i+6AtZxCftu7Yrhw== Received: from phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta02.appoci.oracle.com [147.154.114.232]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 48usm9khdy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 02 Sep 2025 08:08:44 +0000 (GMT) Received: from pps.filterd (phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com (8.18.1.2/8.18.1.2) with ESMTP id 5826Kl9Z024898; Tue, 2 Sep 2025 08:08:43 GMT Received: from nam10-dm6-obe.outbound.protection.outlook.com (mail-dm6nam10on2077.outbound.protection.outlook.com [40.107.93.77]) by phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 48uqr8j6x2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 02 Sep 2025 08:08:43 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=elmgMh2oPrTEX1TxHa87Uc0+2gyVwnRK3OteCYrqQVrqbDAAuhe/XDwGC+LXFeYSN3zzAJ31rRLWC4M82NbYOSibT/xS8AsplpEQZLpxaJ0bgXzI4NMpBWarFJMwAeybt1lIAWp7/PAZRVPFKQXmP5K1JR62GtW2wdU/u2oHreiRS+eWUywHwFAtMfBkUtI+IfevNb7xbQTMU7X2FvIWYCOfJRl8wpjnR1iL8FnVhNwgibr720/LYQbyhOpR1DV+Gd1N1Rt1oOTI3YyRbSkpixnuJ8h6bmAQO075p1qqGy9TUd88twtm43SJZnTJvzvojamBDCxZEGpM42iujx+JQw== 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=eNh3Wby6z7ngc/ypX4XiPlFJRohHuZODIe5ylj1io+c=; b=Ma8VKJkODlalM6ZzU0W+UWpIlNb8GUid6+SpIVZxnq4014anV+/ab4BnhYryZvrP9u5L98Q8jI2FDAjz50hOgN/0EgCn+UBI4OjjVZfSZw76IiW6a2Sbt9nGrcF+DFf4jBgLQ51Dkcn1R0wUCCcRwFUSgmkg9IF2yTPA7fOffqESdk48nmJUhUdcYbAjn5OYVZBmi6r+miyLlAEX6/cIlzIwsalmGEgCMZ7ooi/diLzHcW/pp2bnW9AqN7JOuCWixczmGSV7MPhQKOd+UptMjikyTVPGg5NfPSpx3HHnuhgz27GEjIOQfqcn5O9GMbz+oAJK1hTPOblNDHUvprXHWA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=eNh3Wby6z7ngc/ypX4XiPlFJRohHuZODIe5ylj1io+c=; b=igyBpzE61UIOt6g1hR4UY0aSJYxUuVmbgodkFMV+354usjtIzhJgKFTN7M35ovOnZcwVr52wAKjkSXsG+IFUXR1C2+cwUEJMzFLQVb4E5qjqQkrnKLrrIPIpsmHdjmW17+1K/sz7sB+gknl5lISFe1BcUetAH87k2SnXyOpMls4= Received: from CO6PR10MB5409.namprd10.prod.outlook.com (2603:10b6:5:357::14) by BLAPR10MB5139.namprd10.prod.outlook.com (2603:10b6:208:307::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9094.16; Tue, 2 Sep 2025 08:08:40 +0000 Received: from CO6PR10MB5409.namprd10.prod.outlook.com ([fe80::3c92:21f3:96a:b574]) by CO6PR10MB5409.namprd10.prod.outlook.com ([fe80::3c92:21f3:96a:b574%4]) with mapi id 15.20.9052.013; Tue, 2 Sep 2025 08:08:40 +0000 From: Ankur Arora To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org Cc: akpm@linux-foundation.org, david@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, mingo@redhat.com, mjguzik@gmail.com, luto@kernel.org, peterz@infradead.org, acme@kernel.org, namhyung@kernel.org, tglx@linutronix.de, willy@infradead.org, raghavendra.kt@amd.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com, ankur.a.arora@oracle.com Subject: [PATCH v6 09/15] perf bench mem: Add mmap() workloads Date: Tue, 2 Sep 2025 01:08:10 -0700 Message-Id: <20250902080816.3715913-10-ankur.a.arora@oracle.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20250902080816.3715913-1-ankur.a.arora@oracle.com> References: <20250902080816.3715913-1-ankur.a.arora@oracle.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: MW4PR03CA0083.namprd03.prod.outlook.com (2603:10b6:303:b6::28) To CO6PR10MB5409.namprd10.prod.outlook.com (2603:10b6:5:357::14) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO6PR10MB5409:EE_|BLAPR10MB5139:EE_ X-MS-Office365-Filtering-Correlation-Id: 3a413c95-83a1-4c24-34d2-08dde9f7ed30 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|7416014|366016; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?lmZDfnsrIAcoMHMlarGjs3bM1w8hWTXJGQIWP9s1BScbsx4VDoyGHt82aoP2?= =?us-ascii?Q?hdTr6vp1HQYuGezTgZ2da2BNVc7F19Cg/U/LPty4WcCz0l6xPRyeT8/xd2vx?= =?us-ascii?Q?Z4bHPAYJ3SB/zT8wu4XJ0LRgNPMDzw0+8nXA+pmUZFxNZ/rX8a4qK4+PcUiY?= =?us-ascii?Q?nucMh8rwJuzHdGhfuv6ZolHay1nocogi5eJ4Wa8LmvuFA9fVflbshn0wUFYC?= =?us-ascii?Q?G2OVH46eo42RWlMPX0OL8pVBZgz5QnMVGKs+ktNTdaVghvoCyq2tuOA4nGq0?= =?us-ascii?Q?ZbAfD9xFKihCDjGC3C6pIykfYUOz5Jj9KEVzzFcqpZMQlUIiWme/6gLNttnc?= =?us-ascii?Q?ptyHaQjP0vZ1I01yC7A6it32cIvur1NzLP9h2wuQblCnw45TesuUwcaacQBf?= =?us-ascii?Q?e1sy+l+EmD/iCKMesRZLBhv670EeHAn0LTnDFAtGz+XEjm3wJlz0HTIOvSu0?= =?us-ascii?Q?E6mTlyGxW/t8sMW0rJOQ08Rmz89/mGLa4dG4gxNzl1jyBVI5qGv11TZYevkH?= =?us-ascii?Q?S9Y1BGUbcAiUf7fm0ghC9DoA4665Z0P52McT3EXmKY9eYWBfg3l7teWTf8qh?= =?us-ascii?Q?eqYGu5+aGHyRyAoRROLtNCI3zINvwTAOl0ji+oacq/23o+Wff/X6IYp1YCUI?= =?us-ascii?Q?wFrn0RZZhY3xpryzPq0Yfv6RDX+OHDwiRk/y5u4CMpIdvpvF2ChWibivaUy7?= =?us-ascii?Q?cxAvkQL2WjMxvXNlTKCrR+tOVkXnh70k+Hsq5jtoIv7opmYLjH9XShwBmbp+?= =?us-ascii?Q?BqbfTbCrOArG5tp3nUGwNmlq2YUT39rHQ64DSJdXqboB9Z9/TjFJQDkAUUaT?= =?us-ascii?Q?cIRNWthedn0iHy9QMpowH/tWVDLW/Xh9zNt1RF1fDC2z9TqxcEH6KuUfBtob?= =?us-ascii?Q?1RGYVKyjwNiwbERVec7Svs7FTcnnIKMF/SbewdyqBfEhj5Bd+OqZPCcGoG8X?= =?us-ascii?Q?2u3JAo27mH5CBVqdF57KxQIXPqY8a+b+2n/wayE3Pmu9xbsRf9JeUnpm5PVh?= =?us-ascii?Q?tcgixGbxiXvZPXhT5M81/DtLm9wOTgjIuDpfhLHEp7JPjq4IXpzcYwXgNG5+?= =?us-ascii?Q?XgIly1EQiyM8i18UxKpR8dGM/NXU9UPhNEJP5aFlNncS8HrIdn/b2O64uihK?= =?us-ascii?Q?a7MSD4NKdWY9s6+hoIcga2cd3O3Zf9PmMm9a8fbLlQN8q6BSd+PToW6wg6f4?= =?us-ascii?Q?xOqBM7mWkPDX94KVLhaVxkNk0cy360DNtHUBxeilgQ42QpXTLpd4/ahs4riO?= =?us-ascii?Q?IsowT3M5C/7qhh6KWNlRnVqMBCD6FAZf3z9HLbWLZ5IIARsQGsVgO9xjXBVS?= =?us-ascii?Q?+IAIZD1ryXoROHTTu9ydZcRekndyD5o7yPkOMZfbNpnoSpPRl3VNz3C+EHqw?= =?us-ascii?Q?SZ/MMk32wGOTKCvP2iJHnq6uzg1wF02dYyVOGcPL+k/agEUrothx9UJVebQg?= =?us-ascii?Q?f1k5x8KZu4c=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CO6PR10MB5409.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(376014)(7416014)(366016);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?8+ljM0RIW/rLKhb8fA/B69AEIEM8LdHWAlEgaVFI/NnrXiVQv9y9cu5TB/Xa?= =?us-ascii?Q?jP16+kk9OPnzpdYPzv/vnuwVB/9lp50XtxEPg2HHpSV7QcjPlQRsjzPyn159?= =?us-ascii?Q?+x2AArJGD1S1qlVMpEQVSN9ohoXcOY8IpngutGo5xLctguDOTUS8FdDjkwic?= =?us-ascii?Q?PmfcMyKV6Z44Y+tl10FoOpIrjxqtn0Kbsv6HsCAqkQSlW4Vc6zqRxY00KICH?= =?us-ascii?Q?DtPb06a+AIxu0kND+qjJqyxGOnZso8jqHUFCBAlS+odOyjNfojr0d0rb13y4?= =?us-ascii?Q?G6l8n4Hgwb9FKRUKTs6B+IOv2Yg3qMBbAFz5ZP3rRsTTOl94nqeEmK4NPtqi?= =?us-ascii?Q?P6bnXJzeeAlD9h8N3x2qBbniuaeFMG1HPhvjbMfuc465Gs5hx0b5lE9QprM9?= =?us-ascii?Q?W5ZTbCnntMX4L5fnJ+6YUd42KScaQK9NT5NR95D89hxRzrc6ZIcHwwGs4JWo?= =?us-ascii?Q?O4HBRqPnuai0XStQJFBwRKThfzYMfMDaDoQu6P7HGt8BLSSBoGscJwNk9dL0?= =?us-ascii?Q?gmA8wUUXMTLGM7H2NY9ED2aiWe515XAwHn+9pJL6yc8fJv5zej6/PSzKZaCB?= =?us-ascii?Q?STzk9bUz7A8wYgW7yCSJe6Jzk3KkZ/c0Eu1+WYExhmUxeBPxLHbU4SapaEl+?= =?us-ascii?Q?vO3mkkgUX9AoIEBye8KSf7FXGHjmeYzioJKpVae4KCplxImQxpc/f9JpwNGG?= =?us-ascii?Q?6jkIVldCSJdNMfM3VF7JhBYwI6HSQykDyoObiloejvFnBc3MN4yS4Qqr3kFk?= =?us-ascii?Q?A4+dZF4N5QJ6xmiNtuVzJ1a1nMxyBG8xYYBj8t/Oq6Zkwbspzup6BzDsUBBu?= =?us-ascii?Q?FtVUdBXwgMXFadrWPf5dbUez25XTOpNbGF7WX+oh1dqYTuTAT1lRnO0zSypz?= =?us-ascii?Q?RW8TwbVW1a/vByl694OKCjRPLsC8qPv97dWG3Jm3lKXO6YkbwCdadW38JzTY?= =?us-ascii?Q?Em2xqJd4Y3jixutF0f7q5ONO69VTX5IOst9C4JDuWJwdaqS3MFpHyhot0k5T?= =?us-ascii?Q?bbAOTIp1kkKTFfWTYWjU31dOV6LJA5fOiW6P0tckIEbx/bnEKU97DUO57w2o?= =?us-ascii?Q?zdoTv0NgYZhlEH1a7ZXAqh4Do7lJAFizMgm161rmxU6Jf6IKEnLbHjv3fOQg?= =?us-ascii?Q?UaQ6Nd66D+mK81LirKgg6f9DJulrmWLsu9e1VDQ8s83z8pvRPrXAYiJw3cTM?= =?us-ascii?Q?vJxkc6rYS8sFAM4v0jfUIdNy0TG0IUFX2vmJmek+DdB+mLN45bulhtA5u+N1?= =?us-ascii?Q?FjrcTUPi9ajtVsqRlCSZpGao3R+IBKE2NePxXpSDhdROXheEGQmZwV1vhBmq?= =?us-ascii?Q?70AlMQmo5i4o+IDpGCAWJ18ETaVGttbg4t43RZ75dnRdBLSb9hnJIrjR9xGW?= =?us-ascii?Q?Ip/67hoaUeQxgp43PJT88CemtZ0NLLZD/bZZhNG9CgJJGYPrH6YXSNCAUQ7a?= =?us-ascii?Q?I8PMv898ov1sP3FdWXXRNyROLWGmN9h/EKez/thmdgkIGghvdJwE3H+i/vh2?= =?us-ascii?Q?kxUilOAoInd4CghR5W4r5Zf9IZnyEcMhTwBHPz2dAO1CPnHBvFJI3LdhwuGp?= =?us-ascii?Q?FSMzUYHPJOcuQAouaGnmyE5hwBxwwO0kQMO3AQDm3Vs8BTdpO8WE56ikFtqY?= =?us-ascii?Q?Pw=3D=3D?= X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 3a413c95-83a1-4c24-34d2-08dde9f7ed30 X-MS-Exchange-CrossTenant-AuthSource: CO6PR10MB5409.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Sep 2025 08:08:40.3101 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 0QxNSBdtzIduLpGZAlhqAicJHwABq9zL/IXML4graH+UnrYGFxtVV2VfAAUqMfCflaQc7LVNobgKHkMub4XTcW3X1xpEnDRCsO4k8o+9kss= X-MS-Exchange-Transport-CrossTenantHeadersStamped: BLAPR10MB5139 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-02_02,2025-08-28_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 mlxscore=0 spamscore=0 malwarescore=0 mlxlogscore=999 phishscore=0 suspectscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2508110000 definitions=main-2509020081 X-Proofpoint-GUID: gdW2f3Zg0bmZmj8euE-u3jg4UnQVgDzF X-Authority-Analysis: v=2.4 cv=I7xlRMgg c=1 sm=1 tr=0 ts=68b6a60c cx=c_pps a=OOZaFjgC48PWsiFpTAqLcw==:117 a=OOZaFjgC48PWsiFpTAqLcw==:17 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=z/mQ4Ysz8XfWz/Q5cLBRGdckG28=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=wKuvFiaSGQ0qltdbU6+NXLB8nM8=:19 a=Ol13hO9ccFRV9qXi2t6ftBPywas=:19 a=xqWC_Br6kY4A:10 a=yJojWOMRYYMA:10 a=GoEa3M9JfhUA:10 a=yPCof4ZbAAAA:8 a=2MWhjARPlSRgpm0SOp8A:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODMwMDAzMSBTYWx0ZWRfX+9iqKvAFfoV3 Ut33v71JPRXrmaOY1nfm/RICqHiA0GCblZ6FZwf8eY3PwOSbeatEdgaBgbSWEOfCtCHDKaMuF7f gR8cDxixijlvAIwDI0AU29S+u4cM6j+boGrNxipYqxuAtt1J8FjsInoP0NwydbF/qrwTuZRhMVP y6jKPwNfE3WjydMOq54pQvbAkgG1CbpCLfNyQ8Uiz16unaZTWO9YujBYY7NLbGY+3QLIOoz9b4c jUl1ZJlIC1c4xpvWrgliTBqVo2Cdz5WgYCSbanEt910cZsG9iEg3gapTB5M95/53kW5yZMC0lWI QNkBP+iwm+zfTLnJkkXJfyzQPXa2FBb25ziaaCebq0ULgeNm2ZTEElr8i8d4k2LrFKg0/wBSFW/ jTiRl8jA X-Proofpoint-ORIG-GUID: gdW2f3Zg0bmZmj8euE-u3jg4UnQVgDzF Content-Type: text/plain; charset="utf-8" Add two mmap() workloads: one that eagerly populates a region and another that demand faults it in. The intent is to probe the memory subsytem performance incurred by mmap(). $ perf bench mem mmap -s 4gb -p 4kb -l 10 -f populate # Running 'mem/mmap' benchmark: # function 'populate' (Eagerly populated map()) # Copying 4gb bytes ... 1.811691 GB/sec $ perf bench mem mmap -s 4gb -p 2mb -l 10 -f populate # Running 'mem/mmap' benchmark: # function 'populate' (Eagerly populated mmap()) # Copying 4gb bytes ... 12.272017 GB/sec $ perf bench mem mmap -s 4gb -p 1gb -l 10 -f populate # Running 'mem/mmap' benchmark: # function 'populate' (Eagerly populated mmap()) # Copying 4gb bytes ... 17.085927 GB/sec Signed-off-by: Ankur Arora --- tools/perf/Documentation/perf-bench.txt | 34 +++++++++ tools/perf/bench/bench.h | 1 + tools/perf/bench/mem-functions.c | 96 +++++++++++++++++++++++++ tools/perf/builtin-bench.c | 1 + 4 files changed, 132 insertions(+) diff --git a/tools/perf/Documentation/perf-bench.txt b/tools/perf/Documenta= tion/perf-bench.txt index 3d1455d880c3..1160224cb718 100644 --- a/tools/perf/Documentation/perf-bench.txt +++ b/tools/perf/Documentation/perf-bench.txt @@ -240,6 +240,40 @@ Repeat memset invocation this number of times. --cycles:: Use perf's cpu-cycles event instead of gettimeofday syscall. =20 +*mmap*:: +Suite for evaluating memory subsystem performance for mmap()'d memory. + +Options of *mmap* +^^^^^^^^^^^^^^^^^ +-s:: +--size:: +Specify size of memory to set (default: 1MB). +Available units are B, KB, MB, GB and TB (case insensitive). + +-p:: +--page:: +Specify page-size for mapping memory buffers (default: 4KB). +Available values are 4KB, 2MB, 1GB (case insensitive). + +-r:: +--randomize:: +Specify seed to randomize page access offset (default: 0, or not randomize= d). + +-f:: +--function:: +Specify function to set (default: all). +Available functions are 'demand' and 'populate', with the first +demand faulting pages in the region and the second using an eager +mapping. + +-l:: +--nr_loops:: +Repeat mmap() invocation this number of times. + +-c:: +--cycles:: +Use perf's cpu-cycles event instead of gettimeofday syscall. + SUITES FOR 'numa' ~~~~~~~~~~~~~~~~~ *mem*:: diff --git a/tools/perf/bench/bench.h b/tools/perf/bench/bench.h index 9f736423af53..8519eb5a42fa 100644 --- a/tools/perf/bench/bench.h +++ b/tools/perf/bench/bench.h @@ -28,6 +28,7 @@ int bench_syscall_fork(int argc, const char **argv); int bench_syscall_execve(int argc, const char **argv); int bench_mem_memcpy(int argc, const char **argv); int bench_mem_memset(int argc, const char **argv); +int bench_mem_mmap(int argc, const char **argv); int bench_mem_find_bit(int argc, const char **argv); int bench_futex_hash(int argc, const char **argv); int bench_futex_wake(int argc, const char **argv); diff --git a/tools/perf/bench/mem-functions.c b/tools/perf/bench/mem-functi= ons.c index 2a23bed8c2d3..2908a3a796c9 100644 --- a/tools/perf/bench/mem-functions.c +++ b/tools/perf/bench/mem-functions.c @@ -40,6 +40,7 @@ static const char *chunk_size_str =3D "0"; static unsigned int nr_loops =3D 1; static bool use_cycles; static int cycles_fd; +static unsigned int seed; =20 static const struct option bench_common_options[] =3D { OPT_STRING('s', "size", &size_str, "1MB", @@ -81,6 +82,7 @@ struct bench_params { size_t chunk_size; unsigned int nr_loops; unsigned int page_shift; + unsigned int seed; }; =20 struct bench_mem_info { @@ -98,6 +100,7 @@ typedef void (*mem_fini_t)(struct bench_mem_info *, stru= ct bench_params *, void **, void **); typedef void *(*memcpy_t)(void *, const void *, size_t); typedef void *(*memset_t)(void *, int, size_t); +typedef void (*mmap_op_t)(void *, size_t, unsigned int, bool); =20 struct function { const char *name; @@ -108,6 +111,7 @@ struct function { union { memcpy_t memcpy; memset_t memset; + mmap_op_t mmap_op; }; } fn; }; @@ -160,6 +164,14 @@ static union bench_clock clock_diff(union bench_clock = *s, union bench_clock *e) return t; } =20 +static void clock_accum(union bench_clock *a, union bench_clock *b) +{ + if (use_cycles) + a->cycles +=3D b->cycles; + else + timeradd(&a->tv, &b->tv, &a->tv); +} + static double timeval2double(struct timeval *ts) { return (double)ts->tv_sec + (double)ts->tv_usec / (double)USEC_PER_SEC; @@ -271,6 +283,8 @@ static int bench_mem_common(int argc, const char **argv= , struct bench_mem_info * } p.page_shift =3D ilog2(page_size); =20 + p.seed =3D seed; + if (!strncmp(function_str, "all", 3)) { for (i =3D 0; info->functions[i].name; i++) __bench_mem_function(info, &p, i); @@ -465,3 +479,85 @@ int bench_mem_memset(int argc, const char **argv) =20 return bench_mem_common(argc, argv, &info); } + +static void mmap_page_touch(void *dst, size_t size, unsigned int page_shif= t, bool random) +{ + unsigned long npages =3D size / (1 << page_shift); + unsigned long offset =3D 0, r =3D 0; + + for (unsigned long i =3D 0; i < npages; i++) { + if (random) + r =3D rand() % (1 << page_shift); + + *((char *)dst + offset + r) =3D *(char *)(dst + offset + r) + i; + offset +=3D 1 << page_shift; + } +} + +static int do_mmap(const struct function *r, struct bench_params *p, + void *src __maybe_unused, void *dst __maybe_unused, + union bench_clock *accum) +{ + union bench_clock start, end, diff; + mmap_op_t fn =3D r->fn.mmap_op; + bool populate =3D strcmp(r->name, "populate") =3D=3D 0; + + if (p->seed) + srand(p->seed); + + for (unsigned int i =3D 0; i < p->nr_loops; i++) { + clock_get(&start); + dst =3D bench_mmap(p->size, populate, p->page_shift); + if (!dst) + goto out; + + fn(dst, p->size, p->page_shift, p->seed); + clock_get(&end); + diff =3D clock_diff(&start, &end); + clock_accum(accum, &diff); + + bench_munmap(dst, p->size); + } + + return 0; +out: + printf("# Memory allocation failed - maybe size (%s) %s?\n", size_str, + p->page_shift !=3D PAGE_SHIFT_4KB ? "has insufficient hugepages" : "is = too large"); + return -1; +} + +static const char * const bench_mem_mmap_usage[] =3D { + "perf bench mem mmap ", + NULL +}; + +static const struct function mmap_functions[] =3D { + { .name =3D "demand", + .desc =3D "Demand loaded mmap()", + .fn.mmap_op =3D mmap_page_touch }, + + { .name =3D "populate", + .desc =3D "Eagerly populated mmap()", + .fn.mmap_op =3D mmap_page_touch }, + + { .name =3D NULL, } +}; + +int bench_mem_mmap(int argc, const char **argv) +{ + static const struct option bench_mmap_options[] =3D { + OPT_UINTEGER('r', "randomize", &seed, + "Seed to randomize page access offset."), + OPT_PARENT(bench_common_options), + OPT_END() + }; + + struct bench_mem_info info =3D { + .functions =3D mmap_functions, + .do_op =3D do_mmap, + .usage =3D bench_mem_mmap_usage, + .options =3D bench_mmap_options, + }; + + return bench_mem_common(argc, argv, &info); +} diff --git a/tools/perf/builtin-bench.c b/tools/perf/builtin-bench.c index 2c1a9f3d847a..02dea1b88228 100644 --- a/tools/perf/builtin-bench.c +++ b/tools/perf/builtin-bench.c @@ -65,6 +65,7 @@ static struct bench mem_benchmarks[] =3D { { "memcpy", "Benchmark for memcpy() functions", bench_mem_memcpy }, { "memset", "Benchmark for memset() functions", bench_mem_memset }, { "find_bit", "Benchmark for find_bit() functions", bench_mem_find_bit }, + { "mmap", "Benchmark for mmap() mappings", bench_mem_mmap }, { "all", "Run all memory access benchmarks", NULL }, { NULL, NULL, NULL } }; --=20 2.31.1