From owner-freebsd-stable@FreeBSD.ORG Thu Jan 12 07:52:23 2006 Return-Path: X-Original-To: stable@freebsd.org Delivered-To: freebsd-stable@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id A746316A41F for ; Thu, 12 Jan 2006 07:52:23 +0000 (GMT) (envelope-from victor@bsdes.net) Received: from alf.dyndns.ws (244.Red-217-126-240.staticIP.rima-tde.net [217.126.240.244]) by mx1.FreeBSD.org (Postfix) with ESMTP id C5FB743D4C for ; Thu, 12 Jan 2006 07:52:17 +0000 (GMT) (envelope-from victor@bsdes.net) Received: from alf.dyndns.ws (pato.euesrg02.net [192.168.0.3]) by alf.dyndns.ws (8.13.1/8.13.1) with ESMTP id k0C7qFC8036929 for ; Thu, 12 Jan 2006 08:52:15 +0100 (CET) (envelope-from victor@bsdes.net) Date: Thu, 12 Jan 2006 08:52:15 +0100 From: Victor Balada Diaz To: stable@freebsd.org Message-ID: <20060112075214.GA769@pato.euesrg02.net> References: <43C5A261.1020407@rogers.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <43C5A261.1020407@rogers.com> User-Agent: Mutt/1.4.2.1i Cc: Subject: Re: powerd effectiveness X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Jan 2006 07:52:23 -0000 On Wed, Jan 11, 2006 at 07:27:13PM -0500, Mike Jakubik wrote: > It seems that powerd does very little in terms of reducing heat, and > sacrifices performance while doing so. Am i wrong to assume that > lowering the cpu's frequency should reduce consumed power, and therefore > reduce the amount of heat produced? I have tested with mbmon and i see > no difference between an idle system running with powerd at 75mhz, and > at full rate without. Also, while testing the speed of a php script, i > found myself refreshing it quickly in the browser to see the results of > the timers. I was getting sporadic results, on an otherwise idle system. > I noticed that if anything cpu intensive ran in the background, my > script would execute quicker. I disabled powerd and restored the > frequency, at this point i got more consistent results, and the script > would execute over 100msec faster. It seems like its not adjusting the > clock fast enough. Are these problems with powerd or just my hardware? > It is an old athlon system, running on the via133 chipset . I know that this is not what you're asking for, but anyway: You should try sysutils/fvcool, it will reduce de heat a lot and the performance will not suffer. -- La prueba mas fehaciente de que existe vida inteligente en otros planetas, es que no han intentado contactar con nosotros.