From owner-freebsd-stable@FreeBSD.ORG Wed Oct 31 13:45:30 2007 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 62BE116A418; Wed, 31 Oct 2007 13:45:30 +0000 (UTC) (envelope-from Rainer.Hurling@nw-fva.de) Received: from wald.nfv.gwdg.de (Wald.NFV.gwdg.de [134.76.242.31]) by mx1.freebsd.org (Postfix) with ESMTP id 1EE8013C4B6; Wed, 31 Oct 2007 13:45:29 +0000 (UTC) (envelope-from Rainer.Hurling@nw-fva.de) Received: from pc11b.nfv (Pc11B.nfv [192.168.2.111]) by wald.nfv.gwdg.de (Postfix) with ESMTP id E3817609047; Wed, 31 Oct 2007 09:58:49 +0100 (CET) Message-ID: <472843CC.8070604@nw-fva.de> Date: Wed, 31 Oct 2007 09:58:52 +0100 From: Rainer Hurling Organization: Nordwestdeutsche Forstliche Versuchsanstalt User-Agent: Thunderbird 2.0.0.6 (X11/20070803) MIME-Version: 1.0 To: Kris Kennaway References: <027d01c8125c$73d4db80$c8c55358@delloleg><20071019220501.GL31826@elvis.mu.org> <20071020082724.GA87825@svzserv.kemerovo.su> <008d01c812f5$7aad62d0$eec55358@W2KOOOD> <4719F786.80708@gwdg.de> <47278BFA.90705@FreeBSD.org> In-Reply-To: <47278BFA.90705@FreeBSD.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-stable@freebsd.org, Eugen Grosbein , Oleg Derevenetz Subject: Re: kern/104406: [ufs] Processes get stuck in "ufs" state under persistent CPU load X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 31 Oct 2007 13:45:30 -0000 Thanks for your answer. Kris Kennaway schrieb: > Rainer Hurling wrote: >> Looking into PR kern/104406 it seems, that this describes exactly what >> I am experiencing on three of my systems over the last weeks. They are >> running FreeBSD 8.0-CURRENT (known as 7.0-CURRENT not long ago ;-) ). > > Actually it sounds nothing like it at all ;) > >> On these machines I often observe hangings, sometimes only a few >> seconds, on other times 20-30 seconds before input/output is back. >> This seems to happen when more extensive disk usage is needed >> (portupgrade, buildworld, browsing complicated websites etc.). During >> the hang even xterm is not responding any more, other (diskless) >> applications like xclock keep to continue. I have no panics, only UFS >> (and MSDOSFS) are mounted, no NTFS. About two months ago none of my >> systems showed these hangings. > > Is your system swapping? This is the usual cause of pauses during high > application (actually memory) load. > > Kris No, I am working with 2GB RAM, without swapping at all. In the meantime I tested the above described behaviour a little more. The hangings even appeared without using Xorg, only working on consoles under heavy disk usage (portupgrade etc.). Rainer