Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264041AbTE0SCY (ORCPT ); Tue, 27 May 2003 14:02:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263996AbTE0SAu (ORCPT ); Tue, 27 May 2003 14:00:50 -0400 Received: from mailgate.rz.uni-karlsruhe.de ([129.13.64.97]:50186 "EHLO mailgate.rz.uni-karlsruhe.de") by vger.kernel.org with ESMTP id S264016AbTE0R7s (ORCPT ); Tue, 27 May 2003 13:59:48 -0400 Date: Tue, 27 May 2003 20:12:06 +0200 From: Matthias Mueller To: Marcelo Tosatti Cc: Marc-Christian Petersen , linux-kernel@vger.kernel.org, Carl-Daniel Hailfinger , manish , Christian Klose , William Lee Irwin III Subject: Re: 2.4.20: Proccess stuck in __lock_page ... Message-ID: <20030527181206.GA763@rz.uni-karlsruhe.de> Mail-Followup-To: Marcelo Tosatti , Marc-Christian Petersen , linux-kernel@vger.kernel.org, Carl-Daniel Hailfinger , manish , Christian Klose , William Lee Irwin III References: <3ED2DE86.2070406@storadinc.com> <3ED372DB.1030907@gmx.net> <200305271936.34006.m.c.p@wolk-project.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1768 Lines: 39 Hi, On Tue, May 27, 2003 at 02:47:24PM -0300, Marcelo Tosatti wrote: > On Tue, 27 May 2003, Marc-Christian Petersen wrote: > > > A "pause" is perfectly fine (to some extent, of course), now a hang is > > > not. Is this backtrace from a hanged, unusable kernel or ? > > A pause is _not_ perfectly fine, even not to some extent. That pause we are > > discussing about is a pause of the _whole_ machine, not just disk i/o pauses. > > Mouse stops, keyboard stops, everything stops, who knows wtf. > > Do you also notice them? Since 2.4.19 I notice a lot of pauses with interactive work (desktop usage). If i copy a big file over network or on local disk, some of my desktop machines simply don't respond anymore to user requests (e.g. I start copying a large file over nfs to local disk and start mozilla, mozilla won't start until the copy is finished). My current testcase is: dd if=/dev/zero of=blubber bs=4096 count=65000 and moving the mouse during this operation. With 2.4.18 everything is ok, the mouse runs smooth the whole time. 2.4.19 and later: I get mouse hangs, it won't move for a second, sometimes longer. wolk reduces this problem, but doesn't solve it. On my servers (mostly IBM xseries 345 and 335) it's ok with a vanilla-kernel, but there is no interactive work, mostly routing or network monitoring. I hope, I can run a vanilla 2.4 kernel again on my machines, at the moment that isn't possible. Bye, Matthias -- Matthias.Mueller@rz.uni-karlsruhe.de Rechenzentrum Universitaet Karlsruhe Abteilung Netze - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/