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Shenoy" , linux-kernel@vger.kernel.org, Peter Zijlstra , Mathieu Desnoyers , Ingo Molnar , Vincent Guittot , Juri Lelli References: <31c910c2-717d-b86c-4e08-5c94383682e8@amd.com> <5b35ae2b-a401-2489-4b3a-a03e8284d138@amd.com> <229069c1-3d61-53bb-fff7-691942c48d21@amd.com> <86f761a4-9805-c704-9c23-ec96065fa389@amd.com> From: K Prateek Nayak In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ClientProxiedBy: PN3PR01CA0130.INDPRD01.PROD.OUTLOOK.COM (2603:1096:c01:bf::19) To MW2PR12MB2379.namprd12.prod.outlook.com (2603:10b6:907:9::24) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MW2PR12MB2379:EE_|LV3PR12MB9236:EE_ X-MS-Office365-Filtering-Correlation-Id: bbb9de23-7a95-44c8-f157-08dbb59ae5f1 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:MW2PR12MB2379.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(366004)(396003)(346002)(136003)(39860400002)(376002)(451199024)(186009)(1800799009)(478600001)(4326008)(8676002)(8936002)(6916009)(54906003)(316002)(66476007)(66556008)(66946007)(36756003)(41300700001)(5660300002)(31686004)(86362001)(31696002)(26005)(7416002)(2616005)(4744005)(2906002)(38100700002)(53546011)(6666004)(6486002)(6512007)(6506007)(83380400001)(45980500001)(43740500002);DIR:OUT;SFP:1101; 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On 9/14/2023 4:31 PM, Chen Yu wrote: > Hi Prateek, > > thanks for the test, > > On 2023-09-14 at 09:43:52 +0530, K Prateek Nayak wrote: >> [..snip..] >> >> Meanwhile, here is result for the current series without any >> modifications: >> >> tl;dr >> >> - There seems to be a noticeable increase in hackbench runtime with a >> single group but big gains beyond that. The regression could possibly >> be because of added searching but let me do some digging to confirm >> that. > > Ah OK. May I have the command to run 1 group hackbench? This is actually perf bench sched messaging. The cmdline from the runner is: $ perf bench sched messaging -t -p -l 100000 -g <# of groups> > [..snip..] -- Thanks and Regards, Prateek