From owner-freebsd-acpi@FreeBSD.ORG Thu Aug 2 03:26:56 2007 Return-Path: Delivered-To: acpi@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 93BCE16A418; Thu, 2 Aug 2007 03:26:56 +0000 (UTC) (envelope-from youshi10@u.washington.edu) Received: from mxout7.cac.washington.edu (mxout7.cac.washington.edu [140.142.32.178]) by mx1.freebsd.org (Postfix) with ESMTP id 6CA3413C468; Thu, 2 Aug 2007 03:26:56 +0000 (UTC) (envelope-from youshi10@u.washington.edu) Received: from smtp.washington.edu (smtp.washington.edu [140.142.33.7] (may be forged)) by mxout7.cac.washington.edu (8.13.7+UW06.06/8.13.7+UW07.06) with ESMTP id l723QrCp007390 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 1 Aug 2007 20:26:53 -0700 X-Auth-Received: from [192.168.10.45] (c-24-10-12-194.hsd1.ca.comcast.net [24.10.12.194]) (authenticated authid=youshi10) by smtp.washington.edu (8.13.7+UW06.06/8.13.7+UW07.03) with ESMTP id l723Qrle028909 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 1 Aug 2007 20:26:53 -0700 Message-ID: <46B14EFB.6010207@u.washington.edu> Date: Wed, 01 Aug 2007 20:26:51 -0700 From: Garrett Cooper User-Agent: Thunderbird 2.0.0.5 (Windows/20070716) MIME-Version: 1.0 To: "M. Warner Losh" References: <46AE58B5.3080506@gahr.ch> <46AE8F78.1060203@root.org> <20070801.211718.1683324313.imp@bsdimp.com> In-Reply-To: <20070801.211718.1683324313.imp@bsdimp.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-PMX-Version: 5.3.3.310218, Antispam-Engine: 2.5.1.298604, Antispam-Data: 2007.8.1.200229 X-Uwash-Spam: Gauge=IIIIIII, Probability=7%, Report='__CT 0, __CTE 0, __CT_TEXT_PLAIN 0, __HAS_MSGID 0, __MIME_TEXT_ONLY 0, __MIME_VERSION 0, __SANE_MSGID 0, __USER_AGENT 0' Cc: acpi@freebsd.org, freebsd-hackers@freebsd.org, gahr@gahr.ch, ume@freebsd.org Subject: Re: [patch] enhance powerd(8) to handle max temperature 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, 02 Aug 2007 03:26:56 -0000 M. Warner Losh wrote: > In message: <46AE8F78.1060203@root.org> > Nate Lawson writes: > : Hajimu UMEMOTO wrote: > : >>>>>> On Mon, 30 Jul 2007 23:31:33 +0200 > : >>>>>> Pietro Cerutti said: > : > gahr> My patch is really just a first draft that I wrote in order to have > : > gahr> feedbacks on the general idea to implement a temperature controlling > : > gahr> system inside powerd, and doesn't implement hysteresis as you noted, and > : > gahr> your feedback is that it's not a good idea, which I respect. > : > > : > It is rather backward, IMHO. I did implement a passive cooling > : > feature as an enhancement of powerd(8) like you did, during initial > : > phases. Then, I implemented it in our kernel as a result. > : > : I'll take a look at your patch. Umemoto-san is right in that you really > : want the kernel to control cooling. What happens if powerd dies/hangs > : and your system burns up? Passive cooling is often a last resort to > : keep the system from overheating. > > I keep getting the system shutting down on my HP by FreeBSD because > the temperature exceeds the _CRT value. Maybe there's something wrong > with my values, since it happens a lot: > > hw.acpi.thermal.min_runtime: 0 > hw.acpi.thermal.polling_rate: 10 > hw.acpi.thermal.user_override: 0 > hw.acpi.thermal.tz0.temperature: 0.0C > hw.acpi.thermal.tz0.active: -1 > hw.acpi.thermal.tz0.passive_cooling: 1 > hw.acpi.thermal.tz0.thermal_flags: 0 > hw.acpi.thermal.tz0._PSV: 90.0C > hw.acpi.thermal.tz0._HOT: -1 > hw.acpi.thermal.tz0._CRT: 94.0C > hw.acpi.thermal.tz0._ACx: 40.0C -1 -1 -1 -1 -1 -1 -1 -1 -1 > > Note: temperature is always 0.0C. > > What can I do to help my situation, if I really want the kernel doing > the cooling? > > Warner > Wow, something's really wrong with those calculated temperatures. At that value most of the plastic and weaker circuitry should have fused together =\. -Garrett