From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Hutchings Subject: Re: the maximal speed of pktgen with 1Gbps NIC Date: Wed, 22 Jul 2009 17:12:32 +0200 Message-ID: <1248275552.4058.0.camel@localhost> References: <60230E21F17E384C9BF0B9C98D9E3FDC04BDC92E@sgp-sg-mb02.sgp.agilent.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: jon_zhou@agilent.com, netdev@vger.kernel.org To: Jesper Dangaard Brouer Return-path: Received: from cmburns.debconf.org ([89.16.166.49]:45757 "EHLO cmburns.debconf.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751092AbZGVPkI (ORCPT ); Wed, 22 Jul 2009 11:40:08 -0400 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: On Wed, 2009-07-22 at 14:56 +0200, Jesper Dangaard Brouer wrote: > On Wed, 22 Jul 2009, jon_zhou@agilent.com wrote: > > > anyone knows the maximal speed of pktgen with 1Gbps NIC? > > You are limited by the number of packets per second (pps) your machine can > generate. This limitation is given by the CPU speed and the NIC used. > > The maximum pps I have seen with pktgen at 1Gbit/s is 1200 kpps. > > 1Gbit/s wire speed pps with 64 bytes packets is approx 1953 kpps. > (1000*10^6/(64*8) = 1953125) [...] You need to take the inter-packet gap into consideration too. 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.