Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754534AbXLCOdx (ORCPT ); Mon, 3 Dec 2007 09:33:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752848AbXLCOdq (ORCPT ); Mon, 3 Dec 2007 09:33:46 -0500 Received: from mx3.mail.elte.hu ([157.181.1.138]:35811 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752592AbXLCOdp (ORCPT ); Mon, 3 Dec 2007 09:33:45 -0500 Date: Mon, 3 Dec 2007 15:33:00 +0100 From: Ingo Molnar To: Andi Kleen Cc: Radoslaw Szkodzinski , Arjan van de Ven , linux-kernel@vger.kernel.org, Andrew Morton , Thomas Gleixner Subject: Re: [feature] automatically detect hung TASK_UNINTERRUPTIBLE tasks Message-ID: <20071203143300.GA9518@elte.hu> References: <20071203115900.GB8432@elte.hu> <20071203121357.GB2986@one.firstfloor.org> <20071203122833.GA20232@elte.hu> <20071203124144.GC2986@one.firstfloor.org> <20071203130003.GA26372@elte.hu> <20071203131442.GA4004@one.firstfloor.org> <20071203132955.GA31354@elte.hu> <20071203134801.GB4004@one.firstfloor.org> <20071203135547.GA4245@elte.hu> <20071203141739.GC4719@one.firstfloor.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20071203141739.GC4719@one.firstfloor.org> 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: 1227 Lines: 33 * Andi Kleen wrote: > > debugging feature can be disabled/enabled on a wide scale already: > > > > - in the .config > > > > - runtime, temporarily, via: > > > > echo 0 > /proc/sys/kernel/hung_task_timeout_secs > > That won't address my concerns about already "breaking" (as in > frightening the user etc.) common error handling scenarios by default. wow, now you again use big scary words like "breaking" and "frightening", with is a nice addition to the ticking timebomb metaphore. Andi, sadly you are not listening AT ALL, you are repeating the same argument again and again that has been disputed and countered. Either come up with a new argument or please stop wasting everyone's time. It is undisputable that for most users an unexplained hang is far more "frightening" than a hang followed by an explanation in the syslog. That is a _hard fact_, and if you cannot accept that it's really your cognitive problem not ours... 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/