Date: Wed, 28 Mar 2001 00:59:52 +0200 From: "Karsten W. Rohrbach" <karsten@rohrbach.de> To: David Malone <dwmalone@maths.tcd.ie> Cc: "Hartmann, O." <ohartman@klima.physik.uni-mainz.de>, freebsd-stable@freebsd.org Subject: Re: Overheated PIII in SMP system Message-ID: <20010328005952.D51215@mail.webmonster.de> In-Reply-To: <20010327231229.A83433@walton.maths.tcd.ie>; from dwmalone@maths.tcd.ie on Tue, Mar 27, 2001 at 11:12:29PM %2B0100 References: <Pine.BSF.4.33.0103280001420.1075-100000@klima.physik.uni-mainz.de> <20010327231229.A83433@walton.maths.tcd.ie>
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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
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