From owner-freebsd-stable Tue Mar 27 14:59:35 2001 Delivered-To: freebsd-stable@freebsd.org Received: from mail.webmonster.de (datasink.webmonster.de [194.162.162.209]) by hub.freebsd.org (Postfix) with SMTP id 6A1AB37B719 for ; Tue, 27 Mar 2001 14:59:31 -0800 (PST) (envelope-from karsten@rohrbach.de) Received: (qmail 52194 invoked by uid 1000); 27 Mar 2001 22:59:52 -0000 Date: Wed, 28 Mar 2001 00:59:52 +0200 From: "Karsten W. Rohrbach" To: David Malone Cc: "Hartmann, O." , freebsd-stable@freebsd.org Subject: Re: Overheated PIII in SMP system Message-ID: <20010328005952.D51215@mail.webmonster.de> References: <20010327231229.A83433@walton.maths.tcd.ie> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20010327231229.A83433@walton.maths.tcd.ie>; from dwmalone@maths.tcd.ie on Tue, Mar 27, 2001 at 11:12:29PM +0100 X-Arbitrary-Number-Of-The-Day: 42 Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG David Malone(dwmalone@maths.tcd.ie)@2001.03.27/23:12:29(epoch+985731149s): > I have a feeling that the idle loop for the processor may not use > the halt instruction under some SMP conditions. This might explain > the heating, but I've never looked hard to figure out the exact > reason for this, or weither it is a full explaniation. even worse, the idle loop is executed differently depending on the cpu stepping. you can "feel" it when you run beos5 pro on a dual p-iii with stepping 5 cpus. they get hot like hell. when you use stepping 6 cpus everything is fine. /k -- > If you don't understand or are scared by any of the above > ask your parents or an adult to help you. KR433/KR11-RIPE -- http://www.webmonster.de -- ftp://ftp.webmonster.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message