From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932230AbWDFXyH (ORCPT ); Thu, 6 Apr 2006 19:54:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932234AbWDFXyH (ORCPT ); Thu, 6 Apr 2006 19:54:07 -0400 Received: from adelphi.physics.adelaide.edu.au ([129.127.102.1]:12747 "EHLO adelphi.physics.adelaide.edu.au") by vger.kernel.org with ESMTP id S932230AbWDFXyF (ORCPT ); Thu, 6 Apr 2006 19:54:05 -0400 From: Jonathan Woithe Message-Id: <200604062358.k36Nw92v004229@auster.physics.adelaide.edu.au> Subject: Re: 2.6.16-rt11: Hires timer makes sleep wait far too long To: tglx@linutronix.de Date: Fri, 7 Apr 2006 09:28:09 +0930 (CST) Cc: jwoithe@physics.adelaide.edu.au (Jonathan Woithe), linux-kernel@vger.kernel.org In-Reply-To: <1144319324.5344.688.camel@localhost.localdomain> from "Thomas Gleixner" at Apr 06, 2006 12:28:43 PM X-Mailer: ELM [version 2.5 PL6] 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 Thomas > On Wed, 2006-04-05 at 09:51 +0930, Jonathan Woithe wrote: > > ENABLING IO-APIC IRQs > > ..TIMER: vector=0x31 apic1=0 pin1=2 apic2=-1 pin2=-1 > > Event source pit new caps set: 05 > > Event source lapic installed with caps set: 02 > > : > > Time: tsc clocksource has been installed. > > hrtimers: Switched to high resolution mode CPU 0 > > : > > Time: acpi_pm clocksource has been installed. > > hrtimers: Switched to high resolution mode CPU 0 > > Nothing wrong so far. I have to find a test box with pm timer to get > some more info. Note that the fault condition persisted no matter which clocksource was in use: I tried all four (tsc, pm_timer, jiffies, pit) and they all resulted in "sleep 1" lasting far longer than 1 second. Feel free to email if I can be of further assistance. In the meantime I'll try 2.6.16-rt12 over the weekend to see if the situation is any different. Regards jonathan