From mboxrd@z Thu Jan 1 00:00:00 1970 From: Evgeniy Polyakov Subject: Re: [WIP][PATCHES] Network xmit batching Date: Tue, 19 Jun 2007 20:35:57 +0400 Message-ID: <20070619163557.GA17942@2ka.mipt.ru> References: <1181216629.4064.22.camel@localhost> <20070619132148.GA32078@2ka.mipt.ru> <20070619133333.GA19667@2ka.mipt.ru> <20070619140038.GA13629@2ka.mipt.ru> <1182270529.4968.73.camel@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=koi8-r Cc: Krishna Kumar2 , Gagan Arneja , netdev@vger.kernel.org, Rick Jones , Sridhar Samudrala , David Miller , Robert Olsson To: jamal Return-path: Received: from relay.2ka.mipt.ru ([194.85.82.65]:54097 "EHLO 2ka.mipt.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750755AbXFSQgp (ORCPT ); Tue, 19 Jun 2007 12:36:45 -0400 Content-Disposition: inline In-Reply-To: <1182270529.4968.73.camel@localhost> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Tue, Jun 19, 2007 at 12:28:49PM -0400, jamal (hadi@cyberus.ca) wrote: > On Tue, 2007-19-06 at 18:00 +0400, Evgeniy Polyakov wrote: > > > pktgen reults are quite poor: > > batch (changed from default script: count reduced, clone increased to 10k) > > 241319pps 115Mb/sec > > > > mainline (the same script, on start it wrote about unsupported batch_low > > parameter: > > 497520pps 238Mb/sec > > What is your kernel config in regards to HRES timers? Robert mentioned > to me that the clock source maybe causing issues with pktgen (maybe even > qos). > Robert, insights? > > In my case, I have: > # CONFIG_TICK_ONESHOT is not set > # CONFIG_NO_HZ is not set > # CONFIG_HIGH_RES_TIMERS is not set > > I will try to turn on those in a few days and see if notice a > difference. Essentially the same: $ cat ./.config | egrep "CONFIG_TICK_ONESHOT|CONFIG_NO_HZ|CONFIG_HIGH_RES_TIMERS" $ head Makefile VERSION = 2 PATCHLEVEL = 6 SUBLEVEL = 22 EXTRAVERSION = -rc5 NAME = Holy Dancing Manatees, Batman! -- Evgeniy Polyakov