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SFP:1102; x-ms-exchange-antispam-messagedata: 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BYAPR11MB3143.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 6d189039-097d-4bd7-540e-08d823ed8c11 X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Jul 2020 09:50:43.5123 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 76iUlbgpDSXBcJPzuAi53Mpw1yP0EBmPReyTtAuS9OSWqrzAuDeLGHZdpkwAw9SZZY2a8nLd7Ts+yj1R0NxN77re9csm6peLsMy1zYKcccI= X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR11MB2757 X-OriginatorOrg: intel.com Subject: Re: [dpdk-users] How to specify packet size of testpmd X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: users-bounces@dpdk.org Sender: "users" > -----Original Message----- > From: users On Behalf Of Xu, Chenjie > Sent: Thursday, July 9, 2020 10:26 AM > To: users@dpdk.org > Subject: [dpdk-users] How to specify packet size of testpmd >=20 > Hi all, > Do you know how to specify the packet size when using testpmd to test the > network performance? Hi, Usually, testpmd just forwards the packets it receives. Testpmd itself is n= ot a "proper" traffic generator, but it does have some capabilities to send some= traffic before starting its rx-tx behavior.=20 The command is "start tx_first" and this will by default use a small packet= size. https://doc.dpdk.org/guides/testpmd_app_ug/testpmd_funcs.html#start-tx-firs= t There are a number of more powerful DPDK based traffic generators available= , if you require more features. Examples are pktgen, trex, moongen. Of course, it is also possible to modify a sample application like example/= skeleton to send a specific traffic type, as your particular benchmarking might requ= ire. > Best Regards, > Xu, Chenjie Hope that helps, -Harry