From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936936AbXGSOcW (ORCPT ); Thu, 19 Jul 2007 10:32:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759880AbXGSOcK (ORCPT ); Thu, 19 Jul 2007 10:32:10 -0400 Received: from gw.goop.org ([64.81.55.164]:35183 "EHLO mail.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760842AbXGSOcI (ORCPT ); Thu, 19 Jul 2007 10:32:08 -0400 Message-ID: <469F75AF.5080000@goop.org> Date: Thu, 19 Jul 2007 07:31:11 -0700 From: Jeremy Fitzhardinge User-Agent: Thunderbird 2.0.0.4 (X11/20070615) MIME-Version: 1.0 To: Ingo Molnar CC: Andrew Morton , linux-kernel@vger.kernel.org, Linus Torvalds , stable@kernel.org, Greg KH , Chris Wright Subject: Re: [patch] fix the softlockup watchdog to actually work References: <20070717114453.GA8212@elte.hu> <469CCF8F.4010107@goop.org> <20070717154934.GA24231@elte.hu> <20070719002231.069ebbdd.akpm@linux-foundation.org> <20070719075152.GB12760@elte.hu> In-Reply-To: <20070719075152.GB12760@elte.hu> X-Enigmail-Version: 0.95.2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ingo Molnar wrote: > btw., could you apply the patch below as well? Maybe sched_clock() is > misbehaving on your box? (with this i have 5 softlockup patches in my > tree - and they are working fine so far.) > > Ingo > > ----------------> > Subject: [patch] softlockup: use a reliable global time source > From: Ingo Molnar > > using sched_clock() for the soft-lockups was a bad idea, sched_clock() > is not a reliable global time-source. > How reliable does it need to be? All we need is to measure "about 10 seconds"; if we can't get that out of it, how can it be good for anything else? J