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Wed, 17 Jul 2024 10:40:11 +0000 Date: Wed, 17 Jul 2024 11:40:04 +0100 From: Bruce Richardson <bruce.richardson@intel.com> To: Stephen Hemminger <stephen@networkplumber.org> CC: Jack Bond-Preston <jack.bond-preston@foss.arm.com>, Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>, Morten =?iso-8859-1?Q?Br=F8rup?= <mb@smartsharesystems.com>, <dev@dpdk.org>, Wathsala Vithanage <wathsala.vithanage@arm.com> Subject: Re: [PATCH] doc: clarify mempool striding optimisation on Arm Message-ID: <ZpefhDd0Kyq16agr@bricha3-mobl1.ger.corp.intel.com> References: <20240715144420.36292-1-jack.bond-preston@foss.arm.com> <20240716192541.282e4cd6@hermes.local> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20240716192541.282e4cd6@hermes.local> X-ClientProxiedBy: DU7PR01CA0042.eurprd01.prod.exchangelabs.com (2603:10a6:10:50e::26) To CY8PR11MB7290.namprd11.prod.outlook.com (2603:10b6:930:9a::6) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS0PR11MB7309:EE_|PH8PR11MB7045:EE_ X-MS-Office365-Filtering-Correlation-Id: 72265148-f206-4ddc-f118-08dca64cd520 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|376014; 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It would simplify users experience if it was deprecated or at least > not required and rarely used. The default for mempools (at least on x86) is set to 4 which is a reasonable value, and so specifying memory channels is not really required for running DPDK in most cases (I never use the -n flag when running tests myself). While I don't think we should deprecate the option, I feel it should be removed from our examples and scripts. Hopefully in future a method of determining memory channels from code can be come up with that we can use, but in the meantime using a sane default I feel is good enough. /Bruce