From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail1.windriver.com (mail1.windriver.com [147.11.146.13]) by dpdk.org (Postfix) with ESMTP id BF6C258F5 for ; Tue, 19 Nov 2013 17:30:14 +0100 (CET) Received: from ALA-HCB.corp.ad.wrs.com (ala-hcb.corp.ad.wrs.com [147.11.189.41]) by mail1.windriver.com (8.14.5/8.14.5) with ESMTP id rAJGV8Dp021665 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Tue, 19 Nov 2013 08:31:08 -0800 (PST) Received: from ALA-MBB.corp.ad.wrs.com ([169.254.1.135]) by ALA-HCB.corp.ad.wrs.com ([147.11.189.41]) with mapi id 14.02.0347.000; Tue, 19 Nov 2013 08:31:07 -0800 From: "Wiles, Roger Keith" To: jinho hwang Thread-Topic: [dpdk-dev] ways to generate 40Gbps with two NICs x two ports? Thread-Index: AQHO5UIgO+oT9ioGyUmBFr82NFvorJotRRoA Date: Tue, 19 Nov 2013 16:31:06 +0000 Message-ID: <65281A9A-D192-4C9E-9EF8-A02E0A999862@windriver.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [172.25.40.167] MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Cc: dev Subject: Re: [dpdk-dev] ways to generate 40Gbps with two NICs x two ports? X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Nov 2013 16:30:15 -0000 How do you have Pktgen configured in this case? On my westmere dual socket 3.4Ghz machine I can send 20G on a single NIC 82= 599x two ports. My machine has a PCIe bug that does not allow me to send on= more then 3 ports at wire rate. I get close to 40G 64 byte packets, but th= e forth port does is about 70% of wire rate because of the PCIe hardware bo= ttle neck problem. Keith Wiles, Principal Technologist for Networking member of the CTO office= , Wind River direct 972.434.4136 mobile 940.213.5533 fax 000.000.0000 [Powering 30 Years of Innovation] On Nov 19, 2013, at 10:09 AM, jinho hwang > wrote: Hi All, I have two NICs (82599) x two ports that are used as packet generators. I want to generate full line-rate packets (40Gbps), but Pktgen-DPDK does not seem to be able to do it when two port in a NIC are used simultaneously. Does anyone know how to generate 40Gbps without replicating packets in the switch? Thank you, Jinho