From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Hutchings Subject: Re: get beyond 1Gbps with pktgen on 10Gb nic? Date: Tue, 11 May 2010 14:35:25 +0100 Message-ID: <1273584925.2107.6.camel@achroite.uk.solarflarecom.com> References: <4A6A2125329CFD4D8CC40C9E8ABCAB9F2497D752C7@MILEXCH2.ds.jdsu.net> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: "netdev@vger.kernel.org" To: Jon Zhou Return-path: Received: from exchange.solarflare.com ([216.237.3.220]:21505 "EHLO exchange.solarflare.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756924Ab0EKNfa (ORCPT ); Tue, 11 May 2010 09:35:30 -0400 In-Reply-To: <4A6A2125329CFD4D8CC40C9E8ABCAB9F2497D752C7@MILEXCH2.ds.jdsu.net> Sender: netdev-owner@vger.kernel.org List-ID: On Tue, 2010-05-11 at 06:13 -0700, Jon Zhou wrote: > hi there: > > anyone can get beyond 1Gbps with pktgen or other SW traffic generator with 10Gb nic(intel 82599 or BCM 57711)? > found that some one had met similar situation with broadcom 10G nic but no solution yet I don't know about those specific controllers, but you should be able to achieve close to 10G line rate with netperf's TCP_STREAM on any recent PC server. UDP throughput tends to be poorer as there is less support for offloading segmentation and reassembly. Performance may also be constrained by PCI Express bandwidth (you need a real 8-lane slot) and memory bandwidth (a single memory bank may not be enough). Ben. -- Ben Hutchings, Senior Software Engineer, Solarflare Communications Not speaking for my employer; that's the marketing department's job. They asked us to note that Solarflare product names are trademarked.