From owner-freebsd-stable@FreeBSD.ORG Wed Jan 10 18:49:00 2007 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id A0E4116A40F for ; Wed, 10 Jan 2007 18:49:00 +0000 (UTC) (envelope-from hartzell@rosebud.alerce.com) Received: from merlin.alerce.com (w094.z064001164.sjc-ca.dsl.cnc.net [64.1.164.94]) by mx1.freebsd.org (Postfix) with ESMTP id 757EB13C457 for ; Wed, 10 Jan 2007 18:49:00 +0000 (UTC) (envelope-from hartzell@rosebud.alerce.com) Received: from merlin.alerce.com (localhost [127.0.0.1]) by merlin.alerce.com (Postfix) with ESMTP id 80FBE33C5D; Wed, 10 Jan 2007 10:48:55 -0800 (PST) Received: from rosebud.alerce.com (w092.z064001164.sjc-ca.dsl.cnc.net [64.1.164.92]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by merlin.alerce.com (Postfix) with ESMTP id 28D2933C5B; Wed, 10 Jan 2007 10:48:55 -0800 (PST) Received: from rosebud.alerce.com (localhost [127.0.0.1]) by rosebud.alerce.com (8.13.8/8.13.8) with ESMTP id l0AInfc2001358; Wed, 10 Jan 2007 10:49:42 -0800 (PST) (envelope-from hartzell@rosebud.alerce.com) Received: (from hartzell@localhost) by rosebud.alerce.com (8.13.8/8.13.8/Submit) id l0AInf04001355; Wed, 10 Jan 2007 10:49:41 -0800 (PST) (envelope-from hartzell) From: George Hartzell MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <17829.13636.926529.357546@rosebud.alerce.com> Date: Wed, 10 Jan 2007 10:49:40 -0800 To: Peter Jeremy In-Reply-To: <20070110183643.GI832@turion.vk2pj.dyndns.org> References: <17829.9117.888327.881204@rosebud.alerce.com> <20070110183643.GI832@turion.vk2pj.dyndns.org> X-Mailer: VM 7.19 under 21.4 (patch 19) "Constant Variable" XEmacs Lucid X-Virus-Scanned: ClamAV using ClamSMTP Cc: freebsd-stable@freebsd.org Subject: Re: saving power in a Dell Poweredge 750. X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: hartzell@alerce.com List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 10 Jan 2007 18:49:00 -0000 Peter Jeremy writes: > On Wed, 2007-Jan-10 09:34:21 -0800, George Hartzell wrote: > >I hooked my kill-a-watt meter up and ran the machine for a couple of > >days and it uses 88 watts (3.90KWH/44.01H). > > What was it doing for those couple of days? [...] It's a small time mail server and web host. It was running under its real world load. > I presume you confirmed that cpufreq/powerd was actually functioning > (ie the CPU frequency was being changed). Yep, or at least I confirmed that powerd -v from a shell cycled up and down w/ demand, then I configured it to run as a daemon and confirmed that was cpufreq was loaded and that powerd was running in the background. > >That surprised me a bit, and seems to suggest that it's spending most > >of its energy spinning fans or something. > > PSU overheads, fans, northbridge, video, RAM, disk, ... it all adds up. That's sort of what I was figuring, it is/was just that my laptop experience with powerd and battery life suggested that there would be more of a difference. > I can't specifically help with the Dell. Thanks for the thoughts! g.