From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rick Jones Subject: Re: [WIP][PATCHES] Network xmit batching Date: Thu, 21 Jun 2007 14:00:07 -0700 Message-ID: <1182459607.6096.31.camel@raj-laptop> References: <1181216629.4064.22.camel@localhost> <20070619132148.GA32078@2ka.mipt.ru> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: rick.jones2@hp.com, jamal , Krishna Kumar2 , Gagan Arneja , netdev@vger.kernel.org, Sridhar Samudrala , David Miller , Robert Olsson To: Evgeniy Polyakov Return-path: Received: from palrel13.hp.com ([156.153.255.238]:45631 "EHLO palrel13.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756984AbXFUVAN (ORCPT ); Thu, 21 Jun 2007 17:00:13 -0400 In-Reply-To: <20070619132148.GA32078@2ka.mipt.ru> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Tue, 2007-06-19 at 17:21 +0400, Evgeniy Polyakov wrote: > Hi. > > On Thu, Jun 07, 2007 at 07:43:49AM -0400, jamal (hadi@cyberus.ca) wrote: > > Folks, we need help. Please run this on different hardware. Evgeniy, i > > thought this kind of stuff excites you, no? ;-> (wink, wink). > > Only the sender needs the patch but the receiver must be a more powerful > > machine (so that it is not the bottleneck). > > I've ran several simple tests with desktop e1000 adapter I managed to > find. > > Test machine is amd athlon64 3500+ with 1gb of ram. > Another point is dektop core duo 3.4 ghz with 2 gb of ram and sky2 > driver. > > Simple test included test -> desktop and vice versa traffic with 128 and > 4096 block size in netperf-2.4.3 setup. Is that in conjunction with setting the test-specific -D to set TCP_NODELAY, or was Nagle left-on? If the latter, perhaps timing issues could be why the confidence intervals weren't hit since the relative batching of 128byte sends into larger segments is something of a race. rick jones