From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933303AbXGQOq7 (ORCPT ); Tue, 17 Jul 2007 10:46:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753287AbXGQOqu (ORCPT ); Tue, 17 Jul 2007 10:46:50 -0400 Received: from Mycroft.westnet.com ([216.187.52.7]:38733 "EHLO Mycroft.westnet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752987AbXGQOqt (ORCPT ); Tue, 17 Jul 2007 10:46:49 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <18076.54789.359986.788880@stoffel.org> Date: Tue, 17 Jul 2007 10:45:25 -0400 From: "John Stoffel" To: utz lehmann Cc: Rene Herman , Bodo Eggert <7eggert@gmx.de>, Matt Mackall , Jeremy Fitzhardinge , Jesper Juhl , Ray Lee , Linux Kernel Mailing List , William Lee Irwin III Subject: Re: [PATCH][RFC] 4K stacks default, not a debug thing any more...? In-Reply-To: <1184628395.8707.15.camel@segv.aura.of.mankind> References: <8FO1e-2jW-35@gated-at.bofh.it> <8FYWD-2eS-7@gated-at.bofh.it> <8GdsH-8dc-13@gated-at.bofh.it> <8Ghmx-60z-17@gated-at.bofh.it> <8Gj55-hJ-5@gated-at.bofh.it> <8GkNo-2Vb-1@gated-at.bofh.it> <8GtnN-7TG-23@gated-at.bofh.it> <8GVjY-PL-25@gated-at.bofh.it> <1184628395.8707.15.camel@segv.aura.of.mankind> X-Mailer: VM 7.19 under Emacs 21.4.1 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org utz> On Tue, 2007-07-17 at 00:28 +0200, Rene Herman wrote: >> Given that as Arjan stated Fedora and even RHEL have been using 4K stacks >> for some time now, and certainly the latter being a distribution which I >> would expect to both host a relatively large number of lvm/md/xfs and what >> stackeaters have you users and to be fairly conservative with respect to the >> chances of scribbling over kernel memory (I'm a trusting person...) it seems >> there might at this stage only be very few offenders left. utz> I have to recompile the fedora kernel rpms (fc6, f7) with 8k utz> stacks on my i686 server. It's using NFS -> XFS -> DM -> MD utz> (raid1) -> IDE disks. With 4k stacks it crash (hang) within utz> minutes after using NFS. With 8k stacks it's rock solid. No utz> crashes within months. Does it give any useful information when it does crash? Can you make a simple test case using ram disks instead of IDE disks and then building upon that? I think I should try to do this myself at some point... John