From owner-freebsd-stable Thu Dec 30 6:34:51 1999 Delivered-To: freebsd-stable@freebsd.org Received: from uni4nn.gn.iaf.nl (osmium.gn.iaf.nl [193.67.144.12]) by hub.freebsd.org (Postfix) with ESMTP id 93BD21515F for ; Thu, 30 Dec 1999 06:34:44 -0800 (PST) (envelope-from wilko@yedi.iaf.nl) Received: from yedi.iaf.nl (uucp@localhost) by uni4nn.gn.iaf.nl (8.9.2/8.9.2) with UUCP id PAA25924; Thu, 30 Dec 1999 15:19:05 +0100 (MET) Received: (from wilko@localhost) by yedi.iaf.nl (8.9.3/8.9.3) id OAA62941; Thu, 30 Dec 1999 14:15:01 +0100 (CET) (envelope-from wilko) Date: Thu, 30 Dec 1999 14:15:01 +0100 From: Wilko Bulte To: Peter Wemm Cc: Rasmus Kaj , tsikora@powerusersbbs.com, "freebsd-stable@FreeBSD.ORG" Subject: Re: Temperature Message-ID: <19991230141501.C62691@yedi.iaf.nl> References: <19991230120711.595DD1CA0@overcee.netplex.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0i In-Reply-To: <19991230120711.595DD1CA0@overcee.netplex.com.au>; from peter@netplex.com.au on Thu, Dec 30, 1999 at 08:07:11PM +0800 X-OS: FreeBSD yedi.iaf.nl 3.4-STABLE FreeBSD 3.4-STABLE X-PGP: finger wilko@freebsd.org Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, Dec 30, 1999 at 08:07:11PM +0800, Peter Wemm wrote: > Rasmus Kaj wrote: > > Peter Wemm wrote, about processor temp, etc: > > > > > 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. > > > > The FAQ says that FreeBSD does use the HLT instruction when idle, is > > this wrong? > > In uniprocessor mode, yes it uses HLT (and always has). Under SMP it does > not (and never has). Peter, please allow me a layman's question: is there an easy explanation for this difference? Thanks, -- Wilko Bulte Arnhem, The Netherlands - The FreeBSD Project WWW : http://www.tcja.nl http://www.freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message