From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261549AbVC3I6M (ORCPT ); Wed, 30 Mar 2005 03:58:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261816AbVC3I6L (ORCPT ); Wed, 30 Mar 2005 03:58:11 -0500 Received: from mustang.oldcity.dca.net ([216.158.38.3]:58069 "HELO mustang.oldcity.dca.net") by vger.kernel.org with SMTP id S261549AbVC3I6J (ORCPT ); Wed, 30 Mar 2005 03:58:09 -0500 Subject: Re: Network Performance Ingo's RT-Preempt From: Lee Revell To: Matt Mackall Cc: Christensen Tom , linux-kernel@vger.kernel.org In-Reply-To: <20050330084209.GF25554@waste.org> References: <20050330084209.GF25554@waste.org> Content-Type: text/plain Date: Wed, 30 Mar 2005 03:58:07 -0500 Message-Id: <1112173087.5598.62.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Evolution 2.2.1.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2005-03-30 at 00:42 -0800, Matt Mackall wrote: > On Sun, Mar 27, 2005 at 10:27:40PM +0000, Christensen Tom wrote: > > I'm running 2.6.11 with Ingo's Preempt patch > > (realtime-preempt-2.6.11-final-V0.7.40-04). The system is SMP with a > > broadcom NIC (tg3 driver). I am seeing truly appalling network performance > > (2-4kbps on a 1gbps network). Is this a known issue? I know this patch is > > not production ready, what traces/logs do you need/want to be able to > > debug/fix this? > > What is your test app and what protocol does it use? > > What performance do you get with mainline? > > A tcpdump log is probably a good place to start. You might consider > cc:ing Ingo and possibly netdev. > Before you even bother, try the latest version. That version is too old to be useful for debugging. Lee