From owner-freebsd-acpi@FreeBSD.ORG Thu Oct 26 20:43:57 2006 Return-Path: X-Original-To: acpi@freebsd.org Delivered-To: freebsd-acpi@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4E07D16A412 for ; Thu, 26 Oct 2006 20:43:57 +0000 (UTC) (envelope-from oberman@es.net) Received: from postal1.es.net (postal1.es.net [198.128.3.205]) by mx1.FreeBSD.org (Postfix) with ESMTP id 095EE43D45 for ; Thu, 26 Oct 2006 20:43:56 +0000 (GMT) (envelope-from oberman@es.net) Received: from ptavv.es.net (ptavv.es.net [198.128.4.29]) by postal1.es.net (Postal Node 1) with ESMTP (SSL) id EER30529; Thu, 26 Oct 2006 13:43:29 -0700 Received: from ptavv.es.net (localhost [127.0.0.1]) by ptavv.es.net (Tachyon Server) with ESMTP id C764F4504D; Thu, 26 Oct 2006 13:43:28 -0700 (PDT) To: Stepan Zastupov In-Reply-To: Your message of "Fri, 27 Oct 2006 00:59:07 +0900." <20061026155906.GA904@stepan.ispsystem.net> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1161895408_68145P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Thu, 26 Oct 2006 13:43:28 -0700 From: "Kevin Oberman" Message-Id: <20061026204328.C764F4504D@ptavv.es.net> Cc: acpi@freebsd.org Subject: Re: powerd: add support for limiting cpu frequency on adaptive mode X-BeenThere: freebsd-acpi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: ACPI and power management development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 26 Oct 2006 20:43:57 -0000 --==_Exmh_1161895408_68145P Content-Type: text/plain; charset=us-ascii Content-Disposition: inline > Can someone look on the pr > (http://www.freebsd.org/cgi/query-pr.cgi?pr=bin/104689) I sent. Maybe > the patch is dirty but I think that idea is nice and with it battery > lives really longer. YES! When I am on battery for an extended time, I am very happy to have the system max out at a MUCH lower speed if I can keep basic capabilities for simple stuff like editing and such. Slight slow-downs are not an issue. That said, power consumption is NOT intuitive. If I am playing an MP3 (very constant CPU load) at a speed where the CPU is at about 80%, the system uses more power than when the CPU is at 30%. In either case, the MP3 playback is fine. (This was on my T30 with a 1.8G P4M CPU, so it's not the best for power use.) I know that Windows wants to reduce maximum CPU speed when running on battery, so I do believe this is a good thing. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751 --==_Exmh_1161895408_68145P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) Comment: Exmh version 2.5 06/03/2002 iD8DBQFFQR3wkn3rs5h7N1ERAl7WAKCkD4gUqNH3J5jJMzh8XWX5GPXZVQCfWpp7 izAHjAD//To2iYAD7xwKLog= =kGLt -----END PGP SIGNATURE----- --==_Exmh_1161895408_68145P--