From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from NAM02-BN1-obe.outbound.protection.outlook.com (mail-bn1nam02on2059.outbound.protection.outlook.com [40.107.212.59]) (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 E1C47284B3D for ; Thu, 10 Apr 2025 13:59:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.212.59 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744293555; cv=fail; b=E9Kl7GCSoFz8sos8tXKE/jGbeWOQGpWz9HhFJwu4RaNeM1C1yLTTOIsQAV7eMlfIDqRGdiC9EkUNYoNEaO5IOjuTH0z+DiAjkKPSU8I7Td2EycBeKTssTPHBvuosXcOmIb+Xmr28B/RVW8c33xuaPfX2cdBocW7/8dD5RXZKE6w= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744293555; c=relaxed/simple; bh=jkPtcnsJBKx4yQgnMjfwG8BLqRQ4OtnItRB8K+74yqQ=; h=Message-ID:Date:To:From:Subject:Content-Type:MIME-Version; b=Vj5ogWPKcLIoOsHjGYlhjmbE6MBYi0kUPLq1XeCSPj3HOMJEFnWohzKloEnAM9jAIha3HDJU+pI6CALVagikeVpgfKlNPXR4BB/fENWof25nNu2/kXgUrABqCcmb+/7KYDvw124z0XKZ7rM8PEFdSJxsYMkGE+kCodKPqHCzcx0= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com; spf=fail smtp.mailfrom=nvidia.com; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b=ipOoU3K7; arc=fail smtp.client-ip=40.107.212.59 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=nvidia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b="ipOoU3K7" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=SNonGL5iPyKtguEJoCmWqS+EYlWy9o3wR3ro73hAMKTmgPAAFLVaBS/jYQm2JZWVpXRIelZqot8xbrgeUWN0mV78OWfyV7HaQZ4b6AIzRohRti51JtT237paAvL/tAUcrp89xPipZJR501LuFvbhuOPnLoDaEqx9oHBOY40+WCwnc7UxibXdgxtWP0geYRKI4zwOsK8IcWtNJp0wLqr2sjW+Ade0xlTsoqSZfPlyO6hPeDzgQGaALQEvdtXytDqiVWAxYBpXvY9m8+vVGe/tfm0gCu5Kr/UbT1/lY272J3LR0l/sTJKzxSSl5dk5eWHcs7/MMfN7016nR+atSt5FGw== 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=3t+Y/0wzMey4nm9Dyy1xRaeqENcXNpGgKMAFVbtbyNo=; b=HVytfsRhIsiIoCrmTVTXlyxtY6YYncwz+mA34TryZGzf2LSMkeu6YbVty9FJZRGjIpwicdU/v4jOty1kxauwKfz6IbFx9Eb5rkwczSF20hW+NgoOq93+f8Q9lbER18WxQHc9lS/pgW8pYy54+krzGPVgoMM06X3lL3j0GwD6VK3V0PXohb3h3wrOJ0kBKQkN98hHA1njSu6GYxVY4FihSpPxt0/ATEUvxGQS4QqqF9u0LiRjPf57dY+LirUbyeCzZX8UWwwVqq1+MKTC5WQChLJzj81HU92Jh6RlVHAse+ufGIr+JNcTFiL9OmX0hLht1azxrkjqM86j8Z0FDSg0Ng== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=3t+Y/0wzMey4nm9Dyy1xRaeqENcXNpGgKMAFVbtbyNo=; b=ipOoU3K7Xq1GCdW6XEiljVe8zADvP1X4188GqfVoDEPMa+4Y3W9PZp+Z2KnHqFGN0r7wMaPudGt0ii5EZiv4xD4hP01f9zxfbk/EsW8gZRvLjmCSCjQng8zGi9WsoNxI5sgpXTZJcelU0vK7idevwme2Fp5MSbwThajMwMTjCHNkaUpia+ScxXkOzuNbYZcFGcq/GTpbKzyMHIPep2ia1XrZxxjW0Q1wcPW2ftrlEKn78cg7ZTNF6A9oirgp4RKU+mJLw0g7/58LFSdb/Eqq5qTLvqBGsE0zDXyHcQHxRTayXPj8mmrwkPJ/S1efiZrD1zc6g1qQLgbEZlvRJxUX2A== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from SN7PR12MB8059.namprd12.prod.outlook.com (2603:10b6:806:32b::7) by LV3PR12MB9355.namprd12.prod.outlook.com (2603:10b6:408:216::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8632.21; Thu, 10 Apr 2025 13:59:10 +0000 Received: from SN7PR12MB8059.namprd12.prod.outlook.com ([fe80::4ee2:654e:1fe8:4b91]) by SN7PR12MB8059.namprd12.prod.outlook.com ([fe80::4ee2:654e:1fe8:4b91%5]) with mapi id 15.20.8632.017; Thu, 10 Apr 2025 13:59:10 +0000 Message-ID: Date: Thu, 10 Apr 2025 09:59:07 -0400 User-Agent: Mozilla Thunderbird Content-Language: en-US To: "Paul E. McKenney" , rcu From: Joel Fernandes Subject: Possible scriping bug in rcutorture/kvm.sh Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ClientProxiedBy: LV3P220CA0026.NAMP220.PROD.OUTLOOK.COM (2603:10b6:408:234::27) To SN7PR12MB8059.namprd12.prod.outlook.com (2603:10b6:806:32b::7) Precedence: bulk X-Mailing-List: rcu@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN7PR12MB8059:EE_|LV3PR12MB9355:EE_ X-MS-Office365-Filtering-Correlation-Id: b6927c0e-637c-4cdc-f3d1-08dd7837ddec 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: =?utf-8?B?MFZpS3dTbXJ0V0JxWk1vNVc5WUh2Rmk2SzRKS0M2TWZvNVlvN0I3WFptV1Yv?= =?utf-8?B?NWozMzdscmM4Uy9kMTVCM215TE9nMFF1WVhFY3ZHVVZJQ3lqbnRYdExnOEZF?= =?utf-8?B?YzZWUEVieGl3bm5GT0JESXFQMnpwZDkyN0xhMHE0dHQvdlRuc2c3TU1HTkpZ?= =?utf-8?B?TmFVNU8vUFZ0RFFWbFdRREZCU1FDMjVhNlRDa0FveE00cUNmUS94aFByOFRB?= =?utf-8?B?Nml3QU93ZkpYVnJldXJocVBOZ1ZTM0JWTGU1K1NRU2xUOXJWVGNqUk1oQ1ZQ?= =?utf-8?B?cVBkYlFkbHowYm5qY2dkSUtXSnRPNmJYQmtlOEtFQlJJbVpjSHVoc2hMY1dT?= =?utf-8?B?NXJwcUs5VlFsa0pFWTlSOG01cGUvaDB3K21mdDkyUHUrdTh0UnF4WkhHajZk?= =?utf-8?B?RUlkVVU3UFVxVEtFWDBkMzlTUjVPcHlKclpOUS93T0RHZktQeEFqUElDcVFU?= =?utf-8?B?UWovQ3Bia1JhMXI2WVMxSTlLdENsR1VIOE1IYVBjcFJ4UXROUW9IZ3VMRytv?= =?utf-8?B?RE8vTERqRmlJbnNPeTJscHEweC9MaGR3VEUzSmhBenRjc2Q1cUc0dG9oQ0ls?= =?utf-8?B?M0ZlTEFpYlRvREx0UzFUNXhEUnV0NEdPd21mcEhLVlczeUI3Y3d2eGRzTVZq?= =?utf-8?B?VDk3bmxIK0VTd0ZOU0xvclFUdnhYUkw0U0VHdE5uSGxUY3pQWEZGekxNc2xz?= =?utf-8?B?Unh6akZMNm5wejg0WGdXTHBCeGdheVNxT3NtKzQxbDJlMEoxbGQwbzhMSEo1?= =?utf-8?B?cWM0MDZ2V1BsWERzTXAwZVZMbnlCaFlhM3pYcmp3NFNOaTcxcUFyeHBmeTFH?= =?utf-8?B?RFF2MUYwbzRFbnhDM1NzWC9RTkJKalJCSnRjZHJOSUJCMXhzQXlqVjhqcmNv?= =?utf-8?B?aWZ3OU9BczRmNnNyVmQ5WThQRFZaY2lFVjhvSlVOY0ZJeVduM2VpOWhOekxy?= =?utf-8?B?R3hsR1F6R1ZKVmxleitCVE1melpQS1d6MG9FcVEyVllscXd0djJ5b1JFeDR0?= =?utf-8?B?NTZCaHNnZ24zbzY0NnpZc0Z4R1JQdGJFTm9XUHAyRkxPaGMvTThVNEx4VTg5?= =?utf-8?B?Q1RHL3dWQXpvUGJVNWh3M3J1d1ZlcDVzVDlOeHoyemxmRmxsWHpXRUd6V01E?= =?utf-8?B?eXpUNXArNkZEN0JXMytKK3JUS3BGVGtVUTFRdHZ3a2FSczdBRWltbkl1b3Y0?= =?utf-8?B?UE9DZnBPWURoa1dsRVMxbjE3QWlQc0RpenRuQnNnSmdzNEExRURDeGk5TFNp?= =?utf-8?B?SzlnRXpESWhFam94NFpFNCtwWlhPL2JZL01WdTBPUGpGN05iU0hjbmVlMTAx?= =?utf-8?B?U2RaTFVVLzAvUk9ZZXZHcEhZTG4vc2EzNnU4THc0OGhFTkNiS29qaVNMNGtK?= =?utf-8?B?aERkMUl6MmgzSFFId295ZWpGSk9LT2dvajdFSzNHT0lLRGMxcThpQ2twRC8v?= =?utf-8?B?YzRpUjkvZVQ2c0p3NEthQWJ4aG40L0duMWNzTkhXME92amFYUW9DbDMvajQ1?= =?utf-8?B?ZVFHVUltaWdCREhjeVN0VERJWVZJV0hTaWU3emRtZzdoUTdwdFdqZFlRc3JQ?= =?utf-8?B?ODFmTmhwdWZDbVRzNjgyOUxtejUvS3dUTVV1R2QvdERmZjQ3dUxxQ2NDUU9l?= =?utf-8?B?K2dtRXVXK2ZkbFR6UmhCSFZyMTdvWXhwLzRIdG9UNUFBQlZ2K2VqeTFVV2FM?= =?utf-8?B?Q2hWOEpyNlQ2bWZQbVhKdjUrK1JTa254elFMQzdnbkkyN1c5VS83eTkraGZG?= =?utf-8?B?YnhnNEVVNnlDd1piM3JVTjNqZ3pYVVFjUTZmZlpqdEVNMG8xWXRDNjRRNGxH?= =?utf-8?B?WkFIeWZPUlAxVXFMZHRUUUtpVXE2dUNOMW80bFk2TVlIbkc0SHV4QS9iWFZX?= =?utf-8?Q?s5D1LxRRyp4lg?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SN7PR12MB8059.namprd12.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: =?utf-8?B?a2F1dFlsRDZOenJ6RWxoclkvTUVmU1J6dFAweXpFWUdUL1BpVERzT3o4MG0x?= =?utf-8?B?azBCWGZPM01yOU1pYzRvUE5BbXV0QlVlSWllTjJnSXZzZXJjK28xOHBINWth?= =?utf-8?B?YjFzT1cwMDJBU0czVEZ6WEF2V2lNYUJVdkZGS1dZRWdhaWVlaGtRUDNmMUlt?= =?utf-8?B?V2J0cW5zZUpaenhMSkdLQTdZcXJLOTBYZkVjYUZpZS93blFBVmFBWjJWK3hK?= =?utf-8?B?YjBQL2lhODd4WUNOVDcrazM3anZ3VEJ6azdoUHpPQUlZQmpMc0kyMmRKS1Vj?= =?utf-8?B?SkZkSUE3N3pRcHI0TTg3OGN0YXUwd0NVZWVtRXREMVVJUnBOMDA3cW1nVVQz?= =?utf-8?B?OWpmTXVmYXhIU2xTd3VzbjRtMmU5SVlFY0VUVXBSOUxHOGpYSW4xdEp5Q3Y5?= =?utf-8?B?S3d5QlFNTGRVVU1CMkQ0SC9iUXhUTTJRNEl0RnBoWElBQ3JMWVErM0RGNXRs?= =?utf-8?B?NFYrdS9qQVpoZ0RQWk9ma0N3S0oxdWRUQk95OFNPRGVpeUIxTHNxeFBEd3dD?= =?utf-8?B?YVh0VUxHRWcxRnFxckg4Yk4wRXpNSGdjeG1FQ2RQWXFRalFuaitwT1ExUWRL?= =?utf-8?B?aytWN3l3bXVZSmVUNGdiOERxZHpZNmNKek1zWnVuemtuSWZTdlIyQzRiQTM2?= =?utf-8?B?L2F3NktzbUd6eVVWL1NQck5EK3pDMHJxWElleWpWcnRKL2QwcVdLUzdhYzN6?= =?utf-8?B?cmxic0JjTG5tZUFrdGFad1BkWGVpek12NDhHczFEYzFRUmRFWC9vYXE2YS9k?= =?utf-8?B?Rnc0TWdhM2xIb0FiQ1ZyNnloaXBDSkNzK2M3QmhmTFRDVndtRjZXMlphcmN6?= =?utf-8?B?WmNBdE1nN3FhQlQ3em1zKzFEOVNZaXNKWWFzc28xeFJ4Rlk1NEI2MUNKMVBQ?= =?utf-8?B?YUx5RUNyaVJId0NYV29pZDVqZHBzdkMzZjhHTDNSZmYzcVFVSERZRGtTalIy?= =?utf-8?B?eU5Gd2ZJbXBJN091cjd5YmlvbDBKYWRibTVRbytoMkFVU1VKSUR4VUl6cmJj?= =?utf-8?B?VEVhTlpqNjZmVnFGYXlvNFRoemxlQUhkVE5SRDVJd0YzSU13Szh6bFZKbTh1?= =?utf-8?B?SnZRTjBGeVloYWNKbGdudGMyWGx5M08rR0NGaVVlWmlYZEdmczEyamZ3UGJT?= =?utf-8?B?V2hua3ZWazU1dEdxTW1iUEtieXdnRXdYcE1VbTZuR1pLdW13RWd1cWVyQVg1?= =?utf-8?B?dFYrNVUybGkvck9Bc0hlMDlna055eWxDQWdLYjdqUjVoMjZpSnZvK04ydWE4?= =?utf-8?B?VS9MRzNtTkVQMEJsc2d0M0dzWHhNWTEvK3RVMFRhbXJTRlZxaVhweURsVXBU?= =?utf-8?B?QVNPN0dHbjR2dWtGbDR4Vk1lWkhOR2Z6V3M1VDQ5aS9jVlpQQ0VBSVMvV2RS?= =?utf-8?B?T1pLaXhKSGIwSEc5c3BSWHFoTklwVzhzeGl5YjZiQm5kRE1CZ2tyWEQraHRY?= =?utf-8?B?ZzVHQTBtOGpxcjJtRFUyZ1VlT014Q3c3Z1VvMm1vOUpzeXpBVTJaTlJ5WTRk?= =?utf-8?B?dmVZSmJocUxtY3pySThyOXNtME15L2ZHZVFseDlvZ3FEUnhWYmNOc1lLNU5Y?= =?utf-8?B?bitoL2tiMk1DSXBvWW5kUVhSWHcxR1Y1d0dnc215aWxCL3NvMktKUElHOU9z?= =?utf-8?B?SFY0Y1ZoK2tkZW15bnBlMHZQTEh3a2p6YnVXT0orY0tUdVliZGtoT1BNeThO?= =?utf-8?B?QjluY2R6OVIrUyt6dVV0RWNBV0VwUllabEtlZXV0K3BVaFVqeXByZjg1Q1Br?= =?utf-8?B?RE0xdzhBbHBySHFxb01lY1VJVkJzQ3Jwb01RVEFnanNKYWlHK3M5cnFpM0JW?= =?utf-8?B?bjJQaEZKVE1ObCt1NWI2U3B0cFVEQmViNWsrNUw0aU80SHdROFNVc2oyQVds?= =?utf-8?B?WkI1b0ZyMUE3dGlCZHA5ZXc2UVFkTWpCSDBEQy9yaElHd3Rvd1kxbG9GOFdP?= =?utf-8?B?bjVjbEFTK3h0L3FzWDE5cThwR3BoeWkwWkNxVjV4MFBHMlFXR3IxQUVtWkxJ?= =?utf-8?B?OHZoajI4K0FxNnV2OHVEKzhOeHUxQWNwRXpUbEt2aWhHemRhejI1VTdUeFRu?= =?utf-8?B?VFIxMVZQZGNFajA5RU8xVGRBR3lBOWhiVzNUZngzaGZhZmtwc0doTXRLK3RJ?= =?utf-8?B?S0ZiMlNOU0I2OTNzWjdBeUErUlkrNHQ1d29wYzR4bUxnQlBEY2hQNVU4S0U0?= =?utf-8?B?S1E9PQ==?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: b6927c0e-637c-4cdc-f3d1-08dd7837ddec X-MS-Exchange-CrossTenant-AuthSource: SN7PR12MB8059.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Apr 2025 13:59:09.9651 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 8VMvTJSyzfP7aGQyKs8/tF+eh0aikKDsPAuHTd+4B7f77REWcxoBclA3LTpzauX1aGgutZ6oinqtoe0AZl9BcA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV3PR12MB9355 Hello, Currently with my ARM machine of 288 CPUs, I am only seeing 56 of them used at a time. Any ideas if this is a bug or I am doing something wrong? I started a batch of 36 SRCU-P runs, which is exactly 1 batch: $ sudo tools/testing/selftests/rcutorture/bin/kvm.sh --duration 120 --allcpus --configs "10*SRCU-P" --dryrun batches 1 SRCU-P 8 1 SRCU-P.2 8 1 SRCU-P.3 8 1 SRCU-P.4 8 1 SRCU-P.5 8 1 SRCU-P.6 8 1 SRCU-P.7 8 1 SRCU-P.8 8 1 SRCU-P.9 8 1 SRCU-P.10 8 But, when I run it via: $ sudo tools/testing/selftests/rcutorture/bin/kvm.sh --duration 240 --cpus 288 --configs "36*SRCU-P" ps shows me only 7 qemu instances of 8 CPUs each. However, weirdly it is only 1 thread for each instance (thus its not even 56 CPUs, but rather 7 or so). 1496915 root 20 0 1684276 256996 66816 R 90.9 0.2 8:38.06 qemu-system-aarch64 -enable-kvm -display none -no-reboot -smp 8 -net none -machine virt,gic-version=host -cpu host+ 1496913 root 20 0 1684276 256996 66816 R 89.7 0.2 8:50.53 qemu-system-aarch64 -enable-kvm -display none -no-reboot -smp 8 -net none -machine virt,gic-version=host -cpu host+ 1496929 root 20 0 1684276 256996 66816 R 89.3 0.2 8:44.53 qemu-system-aarch64 -enable-kvm -display none -no-reboot -smp 8 -net none -machine virt,gic-version=host -cpu host+ 1496938 root 20 0 1684276 256996 66816 R 82.8 0.2 8:46.03 qemu-system-aarch64 -enable-kvm -display none -no-reboot -smp 8 -net none -machine virt,gic-version=host -cpu host+ 1496922 root 20 0 1684276 256996 66816 R 82.1 0.2 8:57.83 qemu-system-aarch64 -enable-kvm -display none -no-reboot -smp 8 -net none -machine virt,gic-version=host -cpu host+ 1496908 root 20 0 1684276 256996 66816 R 81.5 0.2 8:50.59 qemu-system-aarch64 -enable-kvm -display none -no-reboot -smp 8 -net none -machine virt,gic-version=host -cpu host+ 1496920 root 20 0 1684276 256996 66816 R 63.6 0.2 8:51.46 qemu-system-aarch64 -enable-kvm -display none -no-reboot -smp 8 -net none -machine virt,gic-version=host -cpu host+ Thanks.