From owner-freebsd-hackers Wed Dec 29 15:20:22 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from mail.HiWAAY.net (fly.HiWAAY.net [208.147.154.56]) by hub.freebsd.org (Postfix) with ESMTP id 72164151E9; Wed, 29 Dec 1999 15:20:18 -0800 (PST) (envelope-from dkelly@nospam.hiwaay.net) Received: from nospam.hiwaay.net (tnt8-208-170-118-224.dialup.HiWAAY.net [208.170.118.224]) by mail.HiWAAY.net (8.9.3/8.9.0) with ESMTP id RAA19459; Wed, 29 Dec 1999 17:20:15 -0600 (CST) Received: from localhost (localhost [127.0.0.1]) by nospam.hiwaay.net (8.9.3/8.9.3) with ESMTP id RAA38266; Wed, 29 Dec 1999 17:20:12 -0600 (CST) (envelope-from dkelly@nospam.hiwaay.net) Message-Id: <199912292320.RAA38266@nospam.hiwaay.net> X-Mailer: exmh version 2.1.1 10/15/1999 To: Peter Wemm Cc: tsikora@powerusersbbs.com, "freebsd-stable@FreeBSD.ORG" , "freebsd-hackers@FreeBSD.ORG" From: David Kelly Subject: Re: Temperature In-reply-to: Message from Peter Wemm of "Thu, 30 Dec 1999 03:15:16 +0800." <19991229191516.17D671CA0@overcee.netplex.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Wed, 29 Dec 1999 17:20:12 -0600 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Peter Wemm writes: > Ted Sikora wrote: > > > During the night periodically my temp warning has been going off. > > I have it set to 118F. This happens only under FreeBSD. Linux continues > > to run cool at the old temperatures. Apparantly some code change has > > caused this. Does anyone know exactly where I should look? > > The main difference is that Linux halts the cpu in the idle loop, we don't. > As a result the cpu is in a tight spin waiting for a process to become > scheduleable. I have some patches half-done that I've been working on for > 4.0 that should probably be able to be adapted to the 3.x series. I'll let others debate whether or not FreeBSD halts the CPU when idle or not, or whether this has changed recently. OTOH Ted has a problem that is being ignored: that his CPU/Heatsink/Fan combination is apparently not up to a 100% duty cycle. DOS would cook it. As would most games. Or several "make buildworlds" in a row. -- David Kelly N4HHE, dkelly@hiwaay.net ===================================================================== The human mind ordinarily operates at only ten percent of its capacity -- the rest is overhead for the operating system. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message