From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759448AbYA3QjF (ORCPT ); Wed, 30 Jan 2008 11:39:05 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754262AbYA3Qiy (ORCPT ); Wed, 30 Jan 2008 11:38:54 -0500 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:33440 "EHLO amd.ucw.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753724AbYA3Qix (ORCPT ); Wed, 30 Jan 2008 11:38:53 -0500 Date: Wed, 30 Jan 2008 17:39:09 +0100 From: Pavel Machek To: Ingo Molnar Cc: kernel list , Linux-pm mailing list Subject: Re: sleepy linux self-test Message-ID: <20080130163909.GA5395@elf.ucw.cz> References: <20080130131748.GA3796@elf.ucw.cz> <20080130163511.GA30797@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080130163511.GA30797@elte.hu> X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed 2008-01-30 17:35:11, Ingo Molnar wrote: > > * Pavel Machek wrote: > > > Hi! > > > > This version should work, at least it did not fail in my testing. It > > does one test 5 second after bootup, then periodically once per 500 > > seconds. Different parameters are trivial to tweak. > > nice - is nohz=off still needed? (if not, what was the problem with > nohz?) Not needed, but I do not know where the nohz problem was. Waiting 5 seconds means userspace comes up and problem is somehow worked around. The nohz problem was of the "you need to press keys to get forward progress" -- the kind I tried to debug few times already :-(. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html