From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754788AbXJJHEV (ORCPT ); Wed, 10 Oct 2007 03:04:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752482AbXJJHEN (ORCPT ); Wed, 10 Oct 2007 03:04:13 -0400 Received: from gw1.cosmosbay.com ([86.65.150.130]:53780 "EHLO gw1.cosmosbay.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752280AbXJJHEM (ORCPT ); Wed, 10 Oct 2007 03:04:12 -0400 Message-ID: <470C7898.1060405@cosmosbay.com> Date: Wed, 10 Oct 2007 09:00:40 +0200 From: Eric Dumazet User-Agent: Thunderbird 2.0.0.6 (Windows/20070728) MIME-Version: 1.0 To: Ingo Freund CC: linux-kernel@vger.kernel.org Subject: Re: sometimes very long response times on network interfaces since 2.6.22 References: <470C724A.9010403@e-dict.net> In-Reply-To: <470C724A.9010403@e-dict.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-1.6 (gw1.cosmosbay.com [86.65.150.130]); Wed, 10 Oct 2007 09:00:58 +0200 (CEST) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ingo Freund a écrit : > Hello, > > since I switched to kernel 2.6.22 my dell 1750 server > with the two onboard BCM5704 network interfaces doesn't > work properly anymore. > TCP requests sometimes need more than 30 seconds to be answered > (or to get away) and the application stops with timeouts. > We are talking about two servers connected via Gigabit switch. > The timeouts happen up to ten times a day. > In the meantime I tried an old 3com 3c905c NIC which showed > the same behaviour. > I still couldn't figure out in which special situation the > communication stops. > The only solution ist to boot the old 2.6.21.5 kernel. > With this, all runs fine. > Did I miss a config issue in the migration to 2.6.22? > The machines run in a productive environment and there is > not much room (time) to debug, but if needed, I could try > if anyone would need more information for help. > Hi 1) A tcpdump would help for sure... 2) Could you try 2.6.23