From owner-freebsd-current@FreeBSD.ORG Thu Jan 22 21:48:31 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id F02C516A4CE for ; Thu, 22 Jan 2004 21:48:31 -0800 (PST) Received: from mail.teleri.net (teleri.net [216.193.194.32]) by mx1.FreeBSD.org (Postfix) with ESMTP id 675E043D9B for ; Thu, 22 Jan 2004 21:46:51 -0800 (PST) (envelope-from wd@teleri.net) Received: by mail.teleri.net (Postfix, from userid 501) id 264D51144D; Thu, 22 Jan 2004 21:44:55 -0800 (PST) Date: Thu, 22 Jan 2004 23:44:55 -0600 From: Chip Norkus To: current@freebsd.org Message-ID: <20040123054454.GI58188@teleri.net> References: <20040121182730.GB40652@xor.obsecurity.org> <20040121183959.GA25589@electra.cse.Buffalo.EDU> <20040121184307.GA41138@xor.obsecurity.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.1i Subject: Re: Strange behaviour X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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: Fri, 23 Jan 2004 05:48:32 -0000 On Thu Jan 22, 2004; 12:54PM +1100 Lachlan O'Dea propagated the following: [snip] > > I have exactly the same behaviour on a Dell PowerEdge 2500, including > progressive degradation as more processes get hung on filesystem > access. I don't need network activity to recreate it. Makewhatis at the > end of installworld in single user mode all on the same local partition > will hang forever on getblk. The find commands run by the daily cron > jobs almost always hang as well. It seems to be triggered by certain > patterns of filesystem use. Please see: > Let me throw in a 'me too' here. I've had the same problem on 2650s and 1650s, if a process gets stuck in getblk/ufs states eventually the machine will become almost unuseable and will require a reboot. If a developer wants to check this out I have a spare machine that can be used for futzing, and I can provide serial console access. > - -000A95DBB47C> > > and I believe this thread is discussing the same thing: > > (includes some DDB > output) > > I have DEBUG_LOCKS in my kernel, but I'm not really sure what to do > with it. I haven't heard of DEBUG_VFS_LOCKS before, I'll look into it. > 'me too' here too. :/ > - -- > Lachlan O'Dea > Computer Associates > Programmer > tel: +61 3 8416 5627 > fax: +61 3 8416 5810 > mobile: +61 412 390 650 > odela01@ca.com > [snip] -chip -- personal: chip norkus; renaissance hacker; wd@teleri.net work: systems engineer @ lunarpages, inc.; chip@lunarpages.com info: finger wd@teleri.net for plan or keys; http://telekinesis.org