From owner-freebsd-stable@FreeBSD.ORG Wed Jan 10 18:36:49 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 DB8DE16A53A for ; Wed, 10 Jan 2007 18:36:49 +0000 (UTC) (envelope-from peterjeremy@optushome.com.au) Received: from turion.vk2pj.dyndns.org (c220-239-3-125.belrs4.nsw.optusnet.com.au [220.239.3.125]) by mx1.freebsd.org (Postfix) with ESMTP id 6C58A13C448 for ; Wed, 10 Jan 2007 18:36:49 +0000 (UTC) (envelope-from peterjeremy@optushome.com.au) Received: from turion.vk2pj.dyndns.org (localhost.vk2pj.dyndns.org [127.0.0.1]) by turion.vk2pj.dyndns.org (8.13.8/8.13.8) with ESMTP id l0AIahTo003237; Thu, 11 Jan 2007 05:36:43 +1100 (EST) (envelope-from peter@turion.vk2pj.dyndns.org) Received: (from peter@localhost) by turion.vk2pj.dyndns.org (8.13.8/8.13.8/Submit) id l0AIahLd003236; Thu, 11 Jan 2007 05:36:43 +1100 (EST) (envelope-from peter) Date: Thu, 11 Jan 2007 05:36:43 +1100 From: Peter Jeremy To: George Hartzell Message-ID: <20070110183643.GI832@turion.vk2pj.dyndns.org> References: <17829.9117.888327.881204@rosebud.alerce.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="AjmyJqqohANyBN/e" Content-Disposition: inline In-Reply-To: <17829.9117.888327.881204@rosebud.alerce.com> X-PGP-Key: http://members.optusnet.com.au/peterjeremy/pubkey.asc User-Agent: Mutt/1.5.13 (2006-08-11) 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 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 18:36:49 -0000 --AjmyJqqohANyBN/e Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable 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? If it was just sitting idle then I would expect the power consumption to be fairly close to what you get with powerd. If you want to see peak power consumption, try running a buildworld, something very FP intensive and something that is thrashing the disk(s) (lots of seeks and writes), all in parallel. >Then I kldloaded cpufreq and enabled powerd and it still uses 88 watts >(8.35KWH/93.47H). I presume you confirmed that cpufreq/powerd was actually functioning (ie the CPU frequency was being changed). >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. I can't specifically help with the Dell. --=20 Peter Jeremy --AjmyJqqohANyBN/e Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFFpTI7/opHv/APuIcRAqxSAKCg7Bi2FJpzW+fWF8oRDxBvzJSJBwCgvKwR iDCohclXAYXTRvSj7qZ4Jp8= =utyC -----END PGP SIGNATURE----- --AjmyJqqohANyBN/e--