From owner-freebsd-questions@FreeBSD.ORG Mon Dec 15 21:40:00 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 23FCE1065678 for ; Mon, 15 Dec 2008 21:40:00 +0000 (UTC) (envelope-from prad@towardsfreedom.com) Received: from idcmail-mo2no.shaw.ca (idcmail-mo2no.shaw.ca [64.59.134.9]) by mx1.freebsd.org (Postfix) with ESMTP id F05318FC33 for ; Mon, 15 Dec 2008 21:39:59 +0000 (UTC) (envelope-from prad@towardsfreedom.com) Received: from pd7ml1no-ssvc.prod.shaw.ca ([10.0.153.161]) by pd7mo1no-svcs.prod.shaw.ca with ESMTP; 15 Dec 2008 14:39:59 -0700 X-Cloudmark-SP-Filtered: true X-Cloudmark-SP-Result: v=1.0 c=0 a=KoDPwd6_AAAA:8 a=TNnrnuqMPNu6IMEw-64A:9 a=CP6zED3xfvbDUTpUjysA:7 a=urFnHxz9DEHKrJr_hH8Au6Eli7QA:4 Received: from s0106000d935c7902.du.shawcable.net (HELO gom.home) ([70.67.160.177]) by pd7ml1no-dmz.prod.shaw.ca with ESMTP; 15 Dec 2008 14:39:59 -0700 Received: from gom.home (localhost [127.0.0.1]) by gom.home (Postfix) with ESMTP id AA7921701E for ; Mon, 15 Dec 2008 13:39:57 -0800 (PST) Date: Mon, 15 Dec 2008 13:39:57 -0800 From: prad To: freebsd-questions@freebsd.org Message-ID: <20081215133957.4ef356ec@gom.home> X-Mailer: Claws Mail 3.3.1 (GTK+ 2.12.1; i386-portbld-freebsd7.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: power management X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 15 Dec 2008 21:40:00 -0000 my son read somewhere that linux does better power management than freebsd. one specific item being that the cpu scaling is more efficiently handled. i don't know much about this stuff so i thought i'd ask here. 1. is there any accuracy to the statement? 2. is cpu scaling a kernel issue? if so, does this mean that the linux kernel has coding in it which deals with the scaling better? 3. are we comparing simple default kernels? can the fbsd kernel be recompiled appropriately to match or exceed the linux one? -- In friendship, prad ... with you on your journey Towards Freedom http://www.towardsfreedom.com (website) Information, Inspiration, Imagination - truly a site for soaring I's