From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1SEaiv-0005fV-15 for garchives@archives.gentoo.org; Mon, 02 Apr 2012 06:27:24 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 56109E0B9F; Mon, 2 Apr 2012 06:26:25 +0000 (UTC) Received: from ironport2-out.teksavvy.com (ironport2-out.teksavvy.com [206.248.154.181]) by pigeon.gentoo.org (Postfix) with ESMTP id 1A351E0B10 for ; Mon, 2 Apr 2012 06:24:59 +0000 (UTC) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AokGAKU/KE9FpZbA/2dsb2JhbACBX48mjVV5iHCeGYYZBJROhkuECQ X-IronPort-AV: E=Sophos;i="4.73,1,1325480400"; d="scan'208";a="171239238" Received: from 69-165-150-192.dsl.teksavvy.com (HELO waltdnes.org) ([69.165.150.192]) by ironport2-out.teksavvy.com with SMTP; 02 Apr 2012 02:24:58 -0400 Received: by waltdnes.org (sSMTP sendmail emulation); Mon, 02 Apr 2012 01:22:50 -0400 From: "Walter Dnes" Date: Mon, 2 Apr 2012 01:22:50 -0400 To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Tips for saving power needed... Message-ID: <20120402052250.GB12677@waltdnes.org> References: <4F786E9A.60404@gmail.com> <2320074.M2zdZi9kkL@localhost> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2320074.M2zdZi9kkL@localhost> User-Agent: Mutt/1.5.21 (2010-09-15) X-Archives-Salt: 73ed4dac-4c4c-4ba6-bfc9-8b06973fb7d8 X-Archives-Hash: 35c20c5742ca94a1ba06cb997b129735 On Sun, Apr 01, 2012 at 05:56:20PM +0200, Volker Armin Hemmann wrote > Am Sonntag, 1. April 2012, 17:04:58 schrieb Jarry: > > Hi, > > > > admin of a colo-center keeps complaining my server is going > > a little over power-limit (which they have set as ~120W per > > 24h/avg, while my server needs ~130-135W). So I need to find > > a way to save at least those 15W, or I will be moved to > > higher tarif (which means higher costs for server-housing). > don't use cpufreqd? Just use the ondemand cpu governor. Only run > services you need. If there is graphics hardware make sure the driver > knows about power saving. An amd card on a virtual terminal needs > as much power as an amd card in X doing heavy 3d lifting ... The following may seem obvious, but here goes... * remove unnecessary video cards, and drivers. Most colo machines should do OK with just a text console running on the onboard GPU. Dump all video driver stuff "/dev/agpgart (AGP Support)" and "Direct Rendering Manager". This assumes you're not running X on your colo machines. mc (Midnight Commander) is a great text-based tool, along the lines of ye olde Norton Commander. * disable sound cards/chips in BIOS and remove drivers and kernel support. * Run "rc-update show" and look for any services you don't need. -- Walter Dnes