From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030196AbVJEP6b (ORCPT ); Wed, 5 Oct 2005 11:58:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030195AbVJEP6a (ORCPT ); Wed, 5 Oct 2005 11:58:30 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:40398 "EHLO mx2.mail.elte.hu") by vger.kernel.org with ESMTP id S1030194AbVJEP6V (ORCPT ); Wed, 5 Oct 2005 11:58:21 -0400 Date: Wed, 5 Oct 2005 17:58:36 +0200 From: Ingo Molnar To: Thomas Gleixner Cc: Steven Rostedt , john stultz , linux-kernel@vger.kernel.org, david singleton Subject: Re: 2.6.14-rc3-rt2 Message-ID: <20051005155836.GA3626@elte.hu> References: <20051004084405.GA24296@elte.hu> <1128527319.13057.139.camel@tglx.tec.linutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1128527319.13057.139.camel@tglx.tec.linutronix.de> User-Agent: Mutt/1.4.2.1i X-ELTE-SpamScore: 0.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=0.0 required=5.9 tests=AWL autolearn=disabled SpamAssassin version=3.0.4 0.0 AWL AWL: From: address is in the auto white-list X-ELTE-VirusStatus: clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Thomas Gleixner wrote: > On Wed, 2005-10-05 at 10:29 -0400, Steven Rostedt wrote: > > Hmm, Ingo, > > > > Do you know why time goes backwards when I run hackbench as a realtime > > process? I added the output of start and stop and it does seem to go > > backwards. > > > > Thomas? > > Yes. Thats happening. I moved the priority of softirq-timer above > hackbench priority and the problem goes away. I look into this > further. wouldnt hackbench then permanently starve run_timer_softirq(), and update_times() in particular? Ingo