From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id D1295C47258 for ; Thu, 25 Jan 2024 04:30:28 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 27C336B007B; Wed, 24 Jan 2024 23:30:28 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 205C48D0003; Wed, 24 Jan 2024 23:30:28 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 059238D0001; Wed, 24 Jan 2024 23:30:28 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id E3E616B007B for ; Wed, 24 Jan 2024 23:30:27 -0500 (EST) Received: from smtpin28.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 8F44EA1A09 for ; Thu, 25 Jan 2024 04:30:27 +0000 (UTC) X-FDA: 81716556894.28.EF2CB6A Received: from NAM10-DM6-obe.outbound.protection.outlook.com (mail-dm6nam10on2077.outbound.protection.outlook.com [40.107.93.77]) by imf18.hostedemail.com (Postfix) with ESMTP id 9E33B1C0005 for ; Thu, 25 Jan 2024 04:30:24 +0000 (UTC) Authentication-Results: imf18.hostedemail.com; dkim=pass header.d=amd.com header.s=selector1 header.b="Tpnt/b4c"; dmarc=pass (policy=quarantine) header.from=amd.com; arc=pass ("microsoft.com:s=arcselector9901:i=1"); spf=pass (imf18.hostedemail.com: domain of shivankg@amd.com designates 40.107.93.77 as permitted sender) smtp.mailfrom=shivankg@amd.com ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1706157024; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=5iyzNeE1gFXeiIdH4zBJDn4/7YKNcgewSwhy9K7/C6Y=; b=IZ3LbPqpb+eqmVEa+YtCmH3hVhXPe57XyVK0+lwTI0fPyvwNqMfBMJ0+OxKSRsyTON0h1j TEBWlfF7O0MEU8PbuJu9M92qkFDTvU5YuiRInHGb4oEX3CxcgjFJ+D82A3hccv1F8yCzjC sysU39mZes6eHJKkkDflVpWRR+Z3Xvo= ARC-Authentication-Results: i=2; imf18.hostedemail.com; dkim=pass header.d=amd.com header.s=selector1 header.b="Tpnt/b4c"; dmarc=pass (policy=quarantine) header.from=amd.com; arc=pass ("microsoft.com:s=arcselector9901:i=1"); spf=pass (imf18.hostedemail.com: domain of shivankg@amd.com designates 40.107.93.77 as permitted sender) smtp.mailfrom=shivankg@amd.com ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1706157024; a=rsa-sha256; cv=pass; b=ZtM9JBrORlEqaKiWc03NREsXTkgO03GUk6LNP/7n+0MXKL5L3qLuU+PuEc7PgFLRLJfkMY E2BI3ZQXAW2Eh3i802v0qGm1AygZkuZ9JrbO1sMgB1YW/yonLVaXu0HcupE7KZosb97WMc oBa6+L2fU/dQ/yzUiD1AbGDUfwnky3g= ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=YC3YPdtIKvPAj+yilCSkFiPmf1as7TEvrNB7Zb6CiWip7jQX7VA7qCsaNNRFdm9O1a4S28rcfHr0h7tUSVsjWNYN6VugsxbiyGlLag/FMyfIgoRX2vkkXR2eOHtTpgEjgNDE2wR4v/S7al8rgTx+hWvv7LO4+nlnGDxGXFHlHUEUznwulThG+foIKTfIjLyT891GeyX1pveQAg5tHmdu9Ydqj+vJg+OBzGeJi4bvHBP27r6hKg37coTknKF7ttNE99KKRiZJfWpHgjzFxk113a44k85KAhMTbJTkBpgT77r5TdYUw6ivH9RJdy/fF+c5MLc+WKNH90ZseVwCDkTvog== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; 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=5iyzNeE1gFXeiIdH4zBJDn4/7YKNcgewSwhy9K7/C6Y=; b=TmBhMYdowT8ucfrdPPxeKyCSwOTmYvu3uVTl9JUYTTHKmU1PJrbRC1FmrcsPZsDrCnSPkb2fanccjNoEF5kqSvZENE7wqNS2KAK6jtfCaVYcFO5wTeLBSTyy4G9ChzIpqti0a88czyc0Y1ouJjXnp/qvbXq2Kk1e7XU36J3FA8gvzpAQA+/aoC7c6L9WeP812IntLzI9Cdg1cpn3EvRk6K7Y8AMGX/PMqLIVbC8g/83pGrNHgVD/LmpIgY7zY0lAkhcb9ZjS/szJ9qE39l0pWtGaSy4D5Z0ZHy+G7R84xrUH9qRMtV9ni9/MASq+sjzxhyGAnCCHM7rX/1gSzkOfNg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=amd.com; dmarc=pass action=none header.from=amd.com; dkim=pass header.d=amd.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=5iyzNeE1gFXeiIdH4zBJDn4/7YKNcgewSwhy9K7/C6Y=; b=Tpnt/b4cc73fxEcVURMe9jyO0JZ/j3ajQK7bxVJqbGTD5VXsBQkO2HToojHMNxqqZplUbmFYwI4PyHxVXl8y7gimTe48ZhABLB5NFwTQxVljlsCvc1H0GAgFJwk0hp67rsiF911fLpKZKwbNoHX9lhsWG7bDDk4a+Sc1E2KRi7I= Received: from CH2PR12MB4262.namprd12.prod.outlook.com (2603:10b6:610:af::8) by BL1PR12MB5780.namprd12.prod.outlook.com (2603:10b6:208:393::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7202.37; Thu, 25 Jan 2024 04:30:19 +0000 Received: from CH2PR12MB4262.namprd12.prod.outlook.com ([fe80::1f57:c794:8d56:389f]) by CH2PR12MB4262.namprd12.prod.outlook.com ([fe80::1f57:c794:8d56:389f%7]) with mapi id 15.20.7228.022; Thu, 25 Jan 2024 04:30:19 +0000 Message-ID: <9cbb1c1e-9dd6-478b-b75d-e6c9f3d6c8f7@amd.com> Date: Thu, 25 Jan 2024 10:00:06 +0530 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH RFC 00/12] x86 NUMA-aware kernel replication Content-Language: en-US To: artem.kuzin@huawei.com, x86@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, luto@kernel.org, peterz@infradead.org, akpm@linux-foundation.org, urezki@gmail.com, hch@infradead.org, lstoakes@gmail.com, mcgrof@kernel.org, rmk+kernel@armlinux.org.uk Cc: nikita.panov@huawei-partners.com, alexander.grubnikov@huawei.com, stepanov.anatoly@huawei.com, guohanjun@huawei.com, weiyongjun1@huawei.com, wangkefeng.wang@huawei.com, judy.chenhui@huawei.com, yusongping@huawei.com, kang.sun@huawei.com, linux-mm@kvack.org, linux-modules@vger.kernel.org, bharata@amd.com, raghavendra.kt@amd.com References: <20231228131056.602411-1-artem.kuzin@huawei.com> From: "Garg, Shivank" In-Reply-To: <20231228131056.602411-1-artem.kuzin@huawei.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ClientProxiedBy: PN3PR01CA0138.INDPRD01.PROD.OUTLOOK.COM (2603:1096:c01:bf::10) To CH2PR12MB4262.namprd12.prod.outlook.com (2603:10b6:610:af::8) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PR12MB4262:EE_|BL1PR12MB5780:EE_ X-MS-Office365-Filtering-Correlation-Id: ce1d72bd-b267-40ec-60ae-08dc1d5e5638 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CH2PR12MB4262.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(346002)(39860400002)(136003)(376002)(366004)(396003)(230922051799003)(186009)(1800799012)(64100799003)(451199024)(921011)(31686004)(4326008)(7416002)(66476007)(6666004)(8936002)(83380400001)(8676002)(5660300002)(478600001)(6486002)(66556008)(316002)(6506007)(2616005)(66946007)(2906002)(6512007)(26005)(38100700002)(41300700001)(31696002)(86362001)(36756003)(43740500002)(45980500001);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?SkcvZ0FrV05md2lqN2JuTFJORW1oOUlIeXhwMnZKTkFhQVpVdUlJd0YxYlhU?= =?utf-8?B?RVVNcHN4MXF6MFpVdnhrM0FId3ZGcXNqQll5V0hHTlpNZEN1Q0krRGRVSWc5?= =?utf-8?B?S2Nid1ZsMWJEQ1IxSHF6Vnh6YWxSSWNCSGZiUHZvdVZMK2Niam8rQ0pqNDYr?= =?utf-8?B?SGJZcWlKcWJZSG0rQ1hpazdqMzJKRFJvSkczV2NIR3hNMDNCM1FDc0pnNWdw?= =?utf-8?B?MXJvTEdMNXEyRm9Sa3BZOEJuSXBkNENLSDlVZFYzZTZ1NDAvUW5IOEo2bnkw?= =?utf-8?B?aUN6NzNBNjNvbmtjRmpQWll1dmZRMXFsUWJHeTF2OEpWQUhsdk1OejgzZnJt?= =?utf-8?B?aU5wR0ZrUllXcFVTUnRMQUVKZEhkS1J0K0dvc21UR0R0S3Q4OEU1N2R0aWw2?= =?utf-8?B?WlJaNm5QYjlFZ2o4Z09NOXd0djBISGc5T0tQNHkxSTdlNFBoWE52UzQ5TzBx?= =?utf-8?B?a1E0RFlFa1llWWp2V2RHaXhMZVJRcmxEOEg3TVh3RW56TXZtVForbFBDdTdW?= =?utf-8?B?SFQ2UG1JZnpUQjduUlhhSkVDYUcxT0YzeUJtZjVFaHAyNENuUzJEK21SNXA4?= =?utf-8?B?UnBOd20vV1ZFOXdoTlNEbVpHSDdKVWNRUU5weG1NQ0FtOEFzVzQ4MUUzZ3Zs?= =?utf-8?B?SUZuY2dBVlc2QW56WmpUZ29YVy9jbFY0SC9PcXZjWGlzVm52bXZ4VnpLbEE5?= =?utf-8?B?VUtCNjZEbUFZVC9laFJZdXpXR0ZSTTFMWWxScjhzK2VIQUtVaDJWQVlxQmtn?= =?utf-8?B?cVZCZ2tJQm1PeGZiTXhPdnFXYlJNaVZYM2xNbXdSQkxPMlpRcUVnTG5NUHR1?= =?utf-8?B?Mm1DNmR4TEl3RURWRTQ5eUU0SytpZEtCdDBidFZSWlFrd1V4V2hhRURwRTRw?= =?utf-8?B?T3BsREZuU0tEUHAxM1V1MDhSaXRwaVR2OFRXc1ZBSnoyOEdBcy9QMHRaSnBD?= =?utf-8?B?c1NwNGtSTnJlenBuU2ZZSit4V0xZRSs5d1NWMFArMG0yWHV3R01UWU9neWNx?= =?utf-8?B?TTZuOWxkQ1BpMEdYVnAwZlZPMXl3amhFaXdwbVFSUy9aUHIrU2NyY3gzSkhO?= =?utf-8?B?cHV4YUtWYzZheS9GbVA0Z0FPdFpTN01GNW9yWjZrVkZEWFRablU2RDc5QnJM?= =?utf-8?B?SlRkWVRDTHEwY0JKZ2t2Nkh5WEt4aGJ4aGJZTXJtYjVKVmt1d3Yva2xVQU9U?= =?utf-8?B?NDJweGNsd2F4WW90NmFSbEtFYzhzQTZBU1J1REVPVHBiR2NsUDYxdEtJSTBX?= =?utf-8?B?UEV5aGdBM1VRNHQxbzA3Q1J2WGF5UlIxQVpHaEZEdkl1ODFVcmYyL0pKZ3Zr?= =?utf-8?B?UjBvU28vMStDNjkyMkdpd0wxZUtQTm9kOXZNRzYyYUFxVXV2SEUyZDlhQWZM?= =?utf-8?B?N2FUMFNaTEc3bGQxZ092azdSNVNKakoyT3ZFdUVmY3N5Z1cvcXUwcE5nK0Nh?= =?utf-8?B?Z2JnWUljOFNLdHVLRHROWWwxWXM2MHZJdGE3QmUyTzBIa0F4eG9JK3ljRHNL?= =?utf-8?B?d2lmZ21zZ2hsSFBEZFNHdjFQN3MzK2hiTUpTbCs2ZzlrekVTazlsUUJxbzRS?= =?utf-8?B?V3JpQm9nUGU3K0t0Z2F3UzZsaXQ3aDU2QWxSdDBJT0xGZkg2OERnbXJ4eERi?= =?utf-8?B?RUlqWXpSdkRtdlM3T2luUFV0ZkhTUzYxWmFXcmw4UmdKQlN5NUdHTVBSRXNz?= =?utf-8?B?ZjJ5QmNXSStnQzRZUlJTU2JQMjB0a2pFUEhUa25BSHVQMkt2bzRFTlh2L0pv?= =?utf-8?B?VW9GY0NKbHkxbGNoUVI4VS9UclBid1E1aGwwZVJIS25kNTZLS2dJUGtraHVs?= =?utf-8?B?RHVpNzA1eGNoTVFxaVhKK1cybk82RDk4T1FHd1hTWTluQTdzanlrbEUvWHd3?= =?utf-8?B?Z1BXa2tVMGVmS1NqbXVBVXlOcUlRS0lLeWZudW1CZEtlTTl5UDZSZUN1MFdX?= =?utf-8?B?U2xpV1lnNTBENDRWVEhRZy9UY1RnR212dW96dWRpenM5WGNJeEJsNkNiUjJT?= =?utf-8?B?SkorMXYxbkhjbGRLNlpKY1o5MmVGeUF3b1UreFZ0bEk1MWpPZDJEWFFCd1Zy?= =?utf-8?B?V0ZReUk0RzdYTVhpSkt2T0pKL0dHUXhSOXE3Um1iMTJzajNRL0N3UHFmNml2?= =?utf-8?Q?Hp3NGBpzcJbfK/F8LRAmrzZjm?= X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: ce1d72bd-b267-40ec-60ae-08dc1d5e5638 X-MS-Exchange-CrossTenant-AuthSource: CH2PR12MB4262.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Jan 2024 04:30:19.4037 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: v3ieavLdYOLGemxwG6cIgAXpDKjPhyUiGjaLV4FNaNmmasiPXvFCDgLNUmMsZ3s1ToXWGWz/xogxF6wPCZ/SIg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL1PR12MB5780 X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 9E33B1C0005 X-Stat-Signature: j5eaqi5syy63iiwmcgpag1eutwko1k9m X-HE-Tag: 1706157024-698292 X-HE-Meta: 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 UtwazOvV q6sHjmRaMic8Hn4VViidFed5a9kd5QqMW7VLb2NO2Vx1A4SsxhQUBAvqIKU1vd13H+OvYP0bmGuAdVoZQ8gR2aDYwMHh5Moh2jclaoNUaCXOp7PeTB3WtfCQqfQ9+NF1KNZTlqRR1ew5PssNiIuPg5yfPNy874CJxaWqYhWnCXIY67cPKVbXjy6fEj4XApsoe2Wv7htxTnjq+wi+2L3i9CE4cLJUwpxKaAkIq/zf/Hp4n6ee4aoGLAzRL18bwI1WaYPkJayg4/6wVQkGo9nNovTAIJ6BUxY+rVn0K X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi Artem, > > Preliminary performance evaluation results: > Processor Intel(R) Xeon(R) CPU E5-2690 > 2 nodes with 12 CPU cores for each one > > fork/1 - Time measurements include only one time of invoking this system call. > Measurements are made between entering and exiting the system call. > > fork/1024 - The system call is invoked in a loop 1024 times. > The time between entering a loop and exiting it was measured. > > mmap/munmap - A set of 1024 pages (if PAGE_SIZE is not defined it is equal to 4096) > was mapped using mmap syscall and unmapped using munmap one. > Every page is mapped/unmapped per a loop iteration. > > mmap/lock - The same as above, but in this case flag MAP_LOCKED was added. > > open/close - The /dev/null pseudo-file was opened and closed in a loop 1024 times. > It was opened and closed once per iteration. > > mount - The pseudo-filesystem procFS was mounted to a temporary directory inside /tmp only one time. > The time between entering and exiting the system call was measured. > > kill - A signal handler for SIGUSR1 was setup. Signal was sent to a child process, > which was created using fork glibc's wrapper. Time between sending and receiving > SIGUSR1 signal was measured. > > Hot caches: > > fork-1 2.3% > fork-1024 10.8% > mmap/munmap 0.4% > mmap/lock 4.2% > open/close 3.2% > kill 4% > mount 8.7% > > Cold caches: > > fork-1 42.7% > fork-1024 17.1% > mmap/munmap 0.4% > mmap/lock 1.5% > open/close 0.4% > kill 26.1% > mount 4.1% > I've conducted some testing on AMD EPYC 7713 64-Core processor (dual socket, 2 NUMA nodes, 64 CPUs on each node) to evaluate the performance with this patchset. I've implemented the syscall based testcases as suggested in your previous mail. I'm shielding the 2nd NUMA node using isolcpus and nohz_full, and executing the tests on cpus belonging to this node. Performance Evaluation results (% gain over base kernel 6.5.0-rc5): Hot caches: fork-1 1.1% fork-1024 -3.8% mmap/munmap -1.5% mmap/lock -4.7% open/close -6.8% kill 3.3% mount -13.0% Cold caches: fork-1 1.2% fork-1024 -7.2% mmap/munmap -1.6% mmap/lock -1.0% open/close 4.6% kill -54.2% mount -8.5% Thanks, Shivank