From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964892AbWCAKIv (ORCPT ); Wed, 1 Mar 2006 05:08:51 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932191AbWCAKIv (ORCPT ); Wed, 1 Mar 2006 05:08:51 -0500 Received: from duempel.org ([81.209.165.42]:35716 "HELO duempel.org") by vger.kernel.org with SMTP id S932172AbWCAKIu (ORCPT ); Wed, 1 Mar 2006 05:08:50 -0500 Date: Wed, 1 Mar 2006 11:07:44 +0100 From: Max Kellermann To: Andrew Morton Cc: linux-kernel@vger.kernel.org Subject: Re: 2.6.16-rc[1-5]: soft lockups on Athlon64 X2 Message-ID: <20060301100744.GA1041@roonstrasse.net> Mail-Followup-To: Andrew Morton , linux-kernel@vger.kernel.org References: <20060227122705.GA27141@roonstrasse.net> <20060228221948.3d76f80b.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060228221948.3d76f80b.akpm@osdl.org> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 2006/03/01 07:19, Andrew Morton wrote: > Strange. I did remove a cond_resched() from > invalidate_mapping_pages() so that it could be run under spinlock > but I cannot believe that you had so many pages cached that the > invalidate took more than ten seconds. > > Does the machine recover and otherwise work OK? The mount indeed took more than ten (wallclock) seconds during which the lockups occured, and after that it seemed usable (I rebooted shortly after because I feared fs corruption). Normally, this mount takes 2 seconds or so - it's a crypted 200GB XFS partition. The same goes for the "bugged" kernel with "nosmp": mount is finished quickly. Max