From owner-freebsd-current@FreeBSD.ORG Wed Dec 10 08:44:10 2003 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 83E6916A4CE for ; Wed, 10 Dec 2003 08:44:10 -0800 (PST) Received: from mail3.speakeasy.net (mail3.speakeasy.net [216.254.0.203]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6FFBD43D31 for ; Wed, 10 Dec 2003 08:44:07 -0800 (PST) (envelope-from jhb@FreeBSD.org) Received: (qmail 18450 invoked from network); 10 Dec 2003 16:44:06 -0000 Received: from dsl027-160-063.atl1.dsl.speakeasy.net (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender ) encrypted SMTP for ; 10 Dec 2003 16:44:06 -0000 Received: from laptop.baldwin.cx (gw1.twc.weather.com [216.133.140.1]) by server.baldwin.cx (8.12.10/8.12.10) with ESMTP id hBAGi4nd005509; Wed, 10 Dec 2003 11:44:04 -0500 (EST) (envelope-from jhb@FreeBSD.org) Message-ID: X-Mailer: XFMail 1.5.4 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <20031209175230.I44055@root.org> Date: Wed, 10 Dec 2003 11:44:04 -0500 (EST) From: John Baldwin To: Nate Lawson X-Spam-Checker-Version: SpamAssassin 2.55 (1.174.2.19-2003-05-19-exp) cc: acpi-jp@jp.freebsd.org cc: current@freebsd.org Subject: RE: ACPI throttling changes X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 10 Dec 2003 16:44:10 -0000 On 10-Dec-2003 Nate Lawson wrote: > I'm working on a shared CPU frequency control driver. One step is to > remove some of the autonomy of the throttling portion of acpi_cpu. > Please test this patch if you have a machine which supports throttling. > With this patch, throttling can be changed by doing: > > sysctl hw.acpi.cpu.current_speed=X > > where X is some number between 1 and hw.acpi.cpu.max_speed. It is no > longer driven by AC line transitions. Run a CPU benchmark like this one > to make sure the throttling transition still works with this patch. > > dd if=/dev/zero bs=1m count=500 | md5 > > This is part of a larger work. Don't worry, it won't be committed until > general CPU frequency control is done so no loss of functionality will be > committed. We need to support using throttling for passive cooling btw. My new laptop I just got has no active cooling support, but does have _TC1 and _TC2 objects in its thermal zone. Are you going to add that? -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/