From owner-freebsd-hackers@FreeBSD.ORG Thu Aug 2 04:53:34 2007 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DDFAD16A4A6; Thu, 2 Aug 2007 04:53:34 +0000 (UTC) (envelope-from imp@bsdimp.com) Received: from harmony.bsdimp.com (bsdimp.com [199.45.160.85]) by mx1.freebsd.org (Postfix) with ESMTP id 7A10B13C465; Thu, 2 Aug 2007 04:53:34 +0000 (UTC) (envelope-from imp@bsdimp.com) Received: from localhost (localhost [127.0.0.1]) by harmony.bsdimp.com (8.13.8/8.13.4) with ESMTP id l724olgS048881; Wed, 1 Aug 2007 22:50:47 -0600 (MDT) (envelope-from imp@bsdimp.com) Date: Wed, 01 Aug 2007 22:50:55 -0600 (MDT) Message-Id: <20070801.225055.-345495092.imp@bsdimp.com> To: julian@elischer.org From: "M. Warner Losh" In-Reply-To: <46B15166.1070305@elischer.org> References: <20070801.211718.1683324313.imp@bsdimp.com> <46B14EFB.6010207@u.washington.edu> <46B15166.1070305@elischer.org> X-Mailer: Mew version 5.2 on Emacs 21.3 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.0 (harmony.bsdimp.com [127.0.0.1]); Wed, 01 Aug 2007 22:50:48 -0600 (MDT) Cc: ume@freebsd.org, acpi@freebsd.org, freebsd-hackers@freebsd.org, youshi10@u.washington.edu, gahr@gahr.ch, nate@root.org Subject: Re: [patch] enhance powerd(8) to handle max temperature X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 02 Aug 2007 04:53:35 -0000 In message: <46B15166.1070305@elischer.org> Julian Elischer writes: : Garrett Cooper wrote: : > 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 =\. : : It would be interesting to see what the values are just after booting, : or even earlier if you can get the bios to give temperatures : (some MBs have that possibility) The values are always the same. ACx is always 40C -1 ... and temperature is always 0. Warner