From owner-freebsd-mobile@FreeBSD.ORG Mon Sep 26 13:31:52 2005 Return-Path: <owner-freebsd-mobile@FreeBSD.ORG> X-Original-To: freebsd-mobile@freebsd.org Delivered-To: freebsd-mobile@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 23A9216A41F for <freebsd-mobile@freebsd.org>; Mon, 26 Sep 2005 13:31:52 +0000 (GMT) (envelope-from ducrot@poupinou.org) Received: from poup.poupinou.org (poup.poupinou.org [195.101.94.96]) by mx1.FreeBSD.org (Postfix) with ESMTP id 97F6543D48 for <freebsd-mobile@freebsd.org>; Mon, 26 Sep 2005 13:31:51 +0000 (GMT) (envelope-from ducrot@poupinou.org) Received: from ducrot by poup.poupinou.org with local (Exim) id 1EJt52-0004D3-00; Mon, 26 Sep 2005 15:31:40 +0200 Date: Mon, 26 Sep 2005 15:31:39 +0200 To: Kevin Oberman <oberman@es.net> Message-ID: <20050926133139.GI21906@poupinou.org> References: <20050925214116.59928.qmail@web32809.mail.mud.yahoo.com> <20050926024910.C989B5D07@ptavv.es.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050926024910.C989B5D07@ptavv.es.net> User-Agent: Mutt/1.5.9i From: Bruno Ducrot <ducrot@poupinou.org> Cc: Brian <kansascity_guy2005@yahoo.com>, freebsd-mobile@freebsd.org Subject: Re: Speed Steping hw.acpi.cpu.cx_support X-BeenThere: freebsd-mobile@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Mobile computing with FreeBSD <freebsd-mobile.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-mobile>, <mailto:freebsd-mobile-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-mobile> List-Post: <mailto:freebsd-mobile@freebsd.org> List-Help: <mailto:freebsd-mobile-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-mobile>, <mailto:freebsd-mobile-request@freebsd.org?subject=subscribe> X-List-Received-Date: Mon, 26 Sep 2005 13:31:52 -0000 On Sun, Sep 25, 2005 at 07:49:08PM -0700, Kevin Oberman wrote: > > Does any one know how to config speed steping. > > > > sysctl output > hw.acpi.cpu.cx_support: > > C1/1 C2/1 C3/85 > > hw.acpi.cpu.cx_support C1 > > hw.acpi.cpu.cx_support 100.00% 0.00% 0.00% > > Add th line: > performance_cx_lowest="LOW" > to /etc/rc.local. To get C3, you must run without USB drivers and, with the numbers you quoted, C2 is not going to buy you much. Except that Cx stuff have absolutely nothing to do with speed steping. The Cx states are some power states entered by the processor in the idle loop. The higher is less power hungry at the cost of more latency to leave this power state. -- Bruno Ducrot -- Which is worse: ignorance or apathy? -- Don't know. Don't care.