From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rick Jones Subject: Re: Fwd: UDP/IPv6 performance issue Date: Tue, 10 Dec 2013 09:05:15 -0800 Message-ID: <52A749CB.1010909@hp.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: ajay seshadri , netdev Return-path: Received: from g5t0009.atlanta.hp.com ([15.192.0.46]:33356 "EHLO g5t0009.atlanta.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755120Ab3LJRFQ (ORCPT ); Tue, 10 Dec 2013 12:05:16 -0500 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: If you want to compare the "fundamental" path length difference between IPv4 and IPv6, without any concerns about stateless offloads like CKO or GRO et al, you could use something like a single-byte netperf TCP_RR test. netperf -c -C -H -t TCP_RR and then compare service demands between the two cases. You can add a "-i 30,3" to have netperf run several iterations to get a better idea of how close it is to the "real" mean result. happy benchmarking, rick jones