From owner-freebsd-questions@FreeBSD.ORG Fri Mar 31 04:27:01 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1190216A400 for ; Fri, 31 Mar 2006 04:27:01 +0000 (UTC) (envelope-from eol1@yahoo.com) Received: from web51901.mail.yahoo.com (web51901.mail.yahoo.com [206.190.48.64]) by mx1.FreeBSD.org (Postfix) with SMTP id 87EBC43D45 for ; Fri, 31 Mar 2006 04:27:00 +0000 (GMT) (envelope-from eol1@yahoo.com) Received: (qmail 45163 invoked by uid 60001); 31 Mar 2006 04:26:59 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:Received:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=g9Xk2b2XwcmcPN1k8MfYHhPti6dbauCrhSPZhvh0JoMNy+0mPaUGsN6GfH8j3w2ZnPyPUA/W4/pWLz4s9QGv7kgbKd5jnU0yd3EHB+Q3LDneYn1YeuapTGVz8toKlSyH0s5TBLTXz9nEj82qHN9B4JA48RStXWREW+YMFjVkvm8= ; Message-ID: <20060331042659.45161.qmail@web51901.mail.yahoo.com> Received: from [62.68.76.227] by web51901.mail.yahoo.com via HTTP; Thu, 30 Mar 2006 20:26:59 PST Date: Thu, 30 Mar 2006 20:26:59 -0800 (PST) From: Peter Thoenen To: freebsd-questions@freebsd.org In-Reply-To: <5F1267A9-EAC2-4E6B-9F17-13827E40ADD4@shire.net> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Subject: Hard crash on 6.x -- reproducible, multiple people affected X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: eol1@yahoo.com List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 31 Mar 2006 04:27:01 -0000 Hallo everybody. Will prob end up PR'ing this but want to post to the list first and get some feelers. At first I thought it was just me but as the port maintainer for tor-devel I have had a couple other folk email me with the exact same problem (believing tor to be the cause). Its not. Problem: When tor (running in server mode), i2p, or freenet is ran (all high bandwidth, high number of concurrent tcp / udp / ip connections, maybe 2000+ sim connects @ a constant 4 mb) between the 2 and 4 hour mark a system running FBSD 6 will hard crash and power off. This is reproducible (though not on demand, just on arbitrary time between 2 and 4 hours). Troubleshooting so far: - It is NOT an issue on 5.x. It is an issue on both 6.0 and 6.1BETA4. - It is not easy to reproduce. I assume a couple hundred people use these ports and I have only had a dozen or so report this problem to me. All of the people suffering from this though CAN reproduce this crash on demand. I have to assume though the other 99% of users though do not see this error for unknown reasons. - It is not a port issue (as tor/i2p/freenet all can cause it). It is not a java issue (was another early worry of mine but tor is written in C). - The hard crash does NOT generate a dump or panic for anybody I have spoken with. /var/crash comes up empty every time. - It is not platform or hardware specific (this was my initial guess). I have seen this on both the amd64 and i386 archs. I have also seen it on various motherboards and nic's (bge, nv, em). To reiterate, running 5.x on identical hardware does not cause this crash. - It is not a tunable or sysctrl issue as far as I can tell. Spent the last month tuning and watching my system limits and all appears to be good. - My gut feeling is this has something to do with the new network stack introduced in 6.0. - When not running one of the aforementioned ports, system does not crash. I have a three week uptime currently on one of my testbeds experiencing this problem. If I start tor / i2p / or freenet I will crash within hours. Help would be appreciated in resolving this or troubleshooting further. I am at a loss here and me (along with a couple other folk that have emailed me) have some nice expensive paperweights now as they crash on use. If you are developer and want to look into this, I can provide all the info you need, just let me know exactly what it is. Thanks, -Peter