Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754915AbXJIRQs (ORCPT ); Tue, 9 Oct 2007 13:16:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751536AbXJIRQl (ORCPT ); Tue, 9 Oct 2007 13:16:41 -0400 Received: from mx1.redhat.com ([66.187.233.31]:49037 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751371AbXJIRQk (ORCPT ); Tue, 9 Oct 2007 13:16:40 -0400 Date: Tue, 9 Oct 2007 13:16:38 -0400 From: Rik van Riel To: "Mr. Berkley Shands" Cc: Subject: Re: 2.6.23-rc9 kswapd infinite loop Message-ID: <20071009131638.190989af@cuia.boston.redhat.com> In-Reply-To: <470BAD2E.7000305@exegy.com> References: <470BAD2E.7000305@exegy.com> Organization: Red Hat, Inc X-Mailer: Claws Mail 3.0.0 (GTK+ 2.10.14; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 813 Lines: 21 On Tue, 09 Oct 2007 11:32:46 -0500 "Mr. Berkley Shands" wrote: > I have a reproducible hang with kswapd in the run queue, everything else is > in an i/o wait. The load average is climbing. > Hints anyone (please) as to how to slay this dragon? Since kswapd is running the whole time, sysrq-P could give a useful set of backtraces (with a bit of luck). With a handful of different backtraces it should be obvious which functions kswapd is looping through. Once we have that, I'll try to whip up a patch to get it fixed. -- All Rights Reversed - 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/