Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754546AbXLBI7W (ORCPT ); Sun, 2 Dec 2007 03:59:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751461AbXLBI7P (ORCPT ); Sun, 2 Dec 2007 03:59:15 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:54767 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751070AbXLBI7O (ORCPT ); Sun, 2 Dec 2007 03:59:14 -0500 Date: Sun, 2 Dec 2007 09:58:47 +0100 From: Ingo Molnar To: Ingo Oeser Cc: David Rientjes , linux-kernel@vger.kernel.org, Andrew Morton , Arjan van de Ven , Thomas Gleixner Subject: Re: [feature] automatically detect hung TASK_UNINTERRUPTIBLE tasks Message-ID: <20071202085847.GB28966@elte.hu> References: <20071201092037.GA32544@elte.hu> <20071201193643.GA10911@elte.hu> <200712020155.00187.ioe-lkml@rameria.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200712020155.00187.ioe-lkml@rameria.de> User-Agent: Mutt/1.5.17 (2007-11-01) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 828 Lines: 21 * Ingo Oeser wrote: > On Saturday 01 December 2007, Ingo Molnar wrote: > > maybe, but we'd have to see how often this gets triggered. An OOM is > > something that could happen in any overloaded system - while a hung task > > is likely due to a kernel bug. > > What about a client using hard mounted NFS shares here? That shouldn't > be killed by the OOM killer in that situation, should it? NFS is a bit weird in this regard - fundamentally everything should be interruptible (or at least killable). Wont the TASK_KILLABLE solve these problems? Ingo -- 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/