From owner-freebsd-current@FreeBSD.ORG Wed Jul 1 23:32:10 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9E73E1065673 for ; Wed, 1 Jul 2009 23:32:10 +0000 (UTC) (envelope-from lstewart@freebsd.org) Received: from lauren.room52.net (lauren.room52.net [210.50.193.198]) by mx1.freebsd.org (Postfix) with ESMTP id 2E3FC8FC13 for ; Wed, 1 Jul 2009 23:32:09 +0000 (UTC) (envelope-from lstewart@freebsd.org) Received: from lstewart-laptop.caia.swin.edu.au (host86-150-124-14.range86-150.btcentralplus.com [86.150.124.14]) (authenticated bits=0) by lauren.room52.net (8.14.3/8.14.3) with ESMTP id n61NW1Ne028435 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 2 Jul 2009 09:32:03 +1000 (EST) (envelope-from lstewart@freebsd.org) Message-ID: <4A4BF1E9.8030609@freebsd.org> Date: Thu, 02 Jul 2009 00:31:53 +0100 From: Lawrence Stewart User-Agent: Thunderbird 2.0.0.22 (X11/20090626) MIME-Version: 1.0 To: Kamigishi Rei References: <4A45ABB1.7040506@haruhiism.net> <4A48CE02.5000200@freebsd.org> <4A48D4A2.8010207@haruhiism.net> <4A48DA31.5010900@freebsd.org> <4A4BE438.5060203@haruhiism.net> <4A4BEC3A.2060108@freebsd.org> <4A4BF0CE.2070203@haruhiism.net> In-Reply-To: <4A4BF0CE.2070203@haruhiism.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-0.3 required=5.0 tests=AWL,BAYES_00,RCVD_IN_PBL, RDNS_DYNAMIC,SPF_SOFTFAIL autolearn=disabled version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on lauren.room52.net Cc: freebsd-current@freebsd.org Subject: Re: r194546 amd64: kernel panic in tcp_sack.c X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Jul 2009 23:32:11 -0000 Kamigishi Rei wrote: > Lawrence Stewart wrote: >> hmmm, handy. What is generating the TCP load on this machine? Serving >> to clients on the Internet? Or machines on a local lan? Is there lots >> of load? Little bit? > I've forgot to mention that in both cases with this tcp_sack conditional > panic the uptime was approximately 40 hours. You didn't mention whether the clients being served were local lan or remote. I ask because tcp_timer_rexmt() is in the backtrace indicating you're getting TCP RTOs firing on the connection that's triggering the panic. Cheers, Lawrence