From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751078AbWFXTyV (ORCPT ); Sat, 24 Jun 2006 15:54:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751079AbWFXTyV (ORCPT ); Sat, 24 Jun 2006 15:54:21 -0400 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:35208 "EHLO amd.ucw.cz") by vger.kernel.org with ESMTP id S1751078AbWFXTyU (ORCPT ); Sat, 24 Jun 2006 15:54:20 -0400 Date: Sat, 24 Jun 2006 21:54:09 +0200 From: Pavel Machek To: Jan Engelhardt Cc: Dave Jones , "linux-os (Dick Johnson)" , Andreas Mohr , linux-kernel@vger.kernel.org Subject: Re: [RFC/SERIOUS] grilling troubled CPUs for fun and profit? Message-ID: <20060624195409.GA2777@elf.ucw.cz> References: <20060619191543.GA17187@rhlx01.fht-esslingen.de> <20060619202354.GD26759@redhat.com> <20060619222528.GC1648@openzaurus.ucw.cz> <20060622181658.GA4193@elf.ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.11+cvs20060126 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri 2006-06-23 19:32:59, Jan Engelhardt wrote: > >> K6 run cooler even with the regular kernel HLT (sti/hlt I presume). > >> Difference to full load can be up to 10 deg, depending on ambient (room) > >> temperature. In winter (read 2005-12-31) it ran between 28 celsius and 34 > >> celsius. The fan even stopped and I thought it was a fan failure, but > >> luckily it was just hw-controlled :) > > > >Okay, so you've got a point. The patch is useful on k6 in the winter > >:-). (Actually, to show you've got a point, you'd have to stop the fan > >and show that cpu badly overheats under for(;;) conditions). > > If you spend me a new CPU, no problem :p > Maybe someone from AMD with spare K6s can try. > > >Yes, we probably want to consolidate various for(;;) loops... and > >maybe it will helpsomeone. If overheating causes reboot instead of > >panic, you probably still loose, as BIOS is close to for(;;)... > > The best would be to turn the machine off after, say, 60 seconds. (So you > can grab the panic, if there is one.) I'd rather not overdo it. Shutting machine down is pretty hard operation. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html