From owner-freebsd-stable@FreeBSD.ORG Thu Jan 12 06:00:44 2006 Return-Path: X-Original-To: freebsd-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 9BB8E16A41F for ; Thu, 12 Jan 2006 06:00:44 +0000 (GMT) (envelope-from noackjr@alumni.rice.edu) Received: from smtp102.biz.mail.re2.yahoo.com (smtp102.biz.mail.re2.yahoo.com [68.142.229.216]) by mx1.FreeBSD.org (Postfix) with SMTP id B2E3543D45 for ; Thu, 12 Jan 2006 06:00:43 +0000 (GMT) (envelope-from noackjr@alumni.rice.edu) Received: (qmail 84486 invoked from network); 12 Jan 2006 06:00:42 -0000 Received: from unknown (HELO optimator.noacks.org) (noackjr@supercrime.org@24.99.22.177 with login) by smtp102.biz.mail.re2.yahoo.com with SMTP; 12 Jan 2006 06:00:42 -0000 Received: from localhost (localhost [127.0.0.1]) by optimator.noacks.org (Postfix) with ESMTP id 1809C6143; Thu, 12 Jan 2006 01:00:42 -0500 (EST) Received: from optimator.noacks.org ([127.0.0.1]) by localhost (optimator.noacks.org [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 04616-10; Thu, 12 Jan 2006 01:00:41 -0500 (EST) Received: from [192.168.1.9] (bastion.noacks.org [192.168.1.9]) by optimator.noacks.org (Postfix) with ESMTP id EE08660CE; Thu, 12 Jan 2006 01:00:40 -0500 (EST) Message-ID: <43C5F088.1040108@alumni.rice.edu> Date: Thu, 12 Jan 2006 01:00:40 -0500 From: Jonathan Noack User-Agent: Thunderbird 1.5 (Windows/20051201) MIME-Version: 1.0 To: Mike Jakubik References: <43C5A261.1020407@rogers.com> <200601121326.18384.doconnor@gsoft.com.au> <43C5CB63.7060202@rogers.com> <200601121554.55657.doconnor@gsoft.com.au> <43C5EAB0.3090805@rogers.com> In-Reply-To: <43C5EAB0.3090805@rogers.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: amavisd-new at noacks.org Cc: freebsd-stable@freebsd.org Subject: Re: powerd effectiveness X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: noackjr@alumni.rice.edu 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 06:00:44 -0000 Mike Jakubik wrote: > Daniel O'Connor wrote: >> On Thu, 12 Jan 2006 13:52, Mike Jakubik wrote: >>>> powerd won't run your CPU at a specific clock frequency - it varies the >>>> CPU frequency based on current load conditions. >>> >>> The load was 0, only thing that was running was mbmon. >> >> Fair enough.. still.. makes testing simpler IMO. > > Agreed. However thats how i tested it :P > >>>> You could try what I do but there are some systems which are very >>>> slow to >>>> change clock speed so this could be an impediment. >>> >>> What was part of my question, is it the hardware or the software thats >>> at fault here. I.e. would a cool n quiet system be better. >> >> Hard to say. >> I don't see how you can possibly get the frequencies you say with the >> hardware you claim. >> >> What does sysctl dev.cpu.0.freq_levels say? > > CPU: AMD Athlon(tm) Processor (1410.21-MHz 686-class CPU) > > # sysctl dev.cpu.0 > dev.cpu.0.%desc: ACPI CPU > dev.cpu.0.%driver: cpu > dev.cpu.0.%location: handle=\_PR_.CPU0 > dev.cpu.0.%pnpinfo: _HID=none _UID=0 > dev.cpu.0.%parent: acpi0 > dev.cpu.0.freq: 87 > dev.cpu.0.freq_levels: 1403/-1 1315/-1 1227/-1 1139/-1 1052/-1 964/-1 > 876/-1 789/-1 701/-1 613/-1 526/-1 438/-1 350/-1 263/-1 175/-1 87/-1 > > I think i meant 87, instead of 75. You might want to throw 'hint.acpi_throttle.0.disabled="1"' in loader.conf so acpi_throttle doesn't load. Assuming acpi_throttle is being used, this will help power consumption a lot. You could also try setting debug.cpufreq.lowest to some sane value to help with performance. -Jonathan