From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761306AbXHPONv (ORCPT ); Thu, 16 Aug 2007 10:13:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759761AbXHPONl (ORCPT ); Thu, 16 Aug 2007 10:13:41 -0400 Received: from 87-127-95-196.no-dns-yet.enta.net ([87.127.95.196]:34356 "EHLO oxford.xeocode.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1759481AbXHPONk (ORCPT ); Thu, 16 Aug 2007 10:13:40 -0400 X-Greylist: delayed 2240 seconds by postgrey-1.27 at vger.kernel.org; Thu, 16 Aug 2007 10:13:40 EDT To: "Peter Zijlstra" Cc: Subject: Re: soft lockup detected In-Reply-To: <1187270275.6114.87.camel@twins> (Peter Zijlstra's message of "Thu\, 16 Aug 2007 15\:17\:55 +0200") User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.1 (gnu/linux) X-Draft-From: ("nnimap+mail01.enterprisedb.com:INBOX" 31969) References: <87ps1nx3kl.fsf@oxford.xeocode.com> <1187270275.6114.87.camel@twins> From: Gregory Stark Organization: EnterpriseDB Date: Thu, 16 Aug 2007 14:36:17 +0100 Message-ID: <874pizwqi6.fsf@oxford.xeocode.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org "Peter Zijlstra" writes: > On Thu, 2007-08-16 at 09:54 +0100, Gregory Stark wrote: > >> This is on 2.6.21-1.3194.fc7. I've been trying different kernels but this is >> the first point where I've narrowed down the symptoms to something >> reproducible. > > That is a very old kernel, and a vendor kernel at that. I'm sorry? The original kernel to exhibit the problem was 2.6.5 -- *that* was a very old kernel and I insisted we upgrade before trying to report any problems. However 2.6.21 is only one version out of date and it's about 3 months old. None of the changelog entries since then have mentioned any semop or ipc related changes (aside from a hugetlb change but we're not using hugetlb). It's more recent than most distributions have as their current release. I do share your feelings about vendor kernels. We've seen these problems with SUSE 2.6.5 and 2.6.16 kernels though. This was the most recently released kernel we've tried. > Did any of the different kernels you tried include a recent upstream > one? Still working on it. -- Gregory Stark EnterpriseDB http://www.enterprisedb.com