From owner-freebsd-stable@FreeBSD.ORG Sun Aug 3 13:23:11 2008 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B8AC3106564A for ; Sun, 3 Aug 2008 13:23:11 +0000 (UTC) (envelope-from dan@dan.emsphone.com) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.freebsd.org (Postfix) with ESMTP id 7A02D8FC08 for ; Sun, 3 Aug 2008 13:23:11 +0000 (UTC) (envelope-from dan@dan.emsphone.com) Received: from dan.emsphone.com (smmsp@localhost [127.0.0.1]) by dan.emsphone.com (8.14.3/8.14.2) with ESMTP id m73DNAJL007450 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sun, 3 Aug 2008 08:23:10 -0500 (CDT) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.14.3/8.14.2/Submit) id m73DN9T6007447; Sun, 3 Aug 2008 08:23:09 -0500 (CDT) (envelope-from dan) Date: Sun, 3 Aug 2008 08:23:09 -0500 From: Dan Nelson To: Torfinn Ingolfsen Message-ID: <20080803132309.GC93138@dan.emsphone.com> References: <20080803015053.e67a39ee.torfinn.ingolfsen@broadpark.no> <20080803031912.GA38781@eos.sc1.parodius.com> <20080803135251.60d4bb7d.torfinn.ingolfsen@broadpark.no> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080803135251.60d4bb7d.torfinn.ingolfsen@broadpark.no> X-OS: FreeBSD 7.0-STABLE User-Agent: Mutt/1.5.18 (2008-05-17) Cc: freebsd-stable@freebsd.org Subject: Re: Temperature monitoring on old desktop - Dell OptiPlex SX270? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 03 Aug 2008 13:23:11 -0000 In the last episode (Aug 03), Torfinn Ingolfsen said: > On Sat, 02 Aug 2008 20:19:12 -0700 Jeremy Chadwick wrote: > > > On Sun, Aug 03, 2008 at 01:50:53AM +0200, Torfinn Ingolfsen wrote: > > The first questions to ask are: 1) does this machine even have a > > H/W monitoring IC on it, and 2) is it enabled/wired to thermistors > > and fans? > > Yes, but so far I haven't found out anything by searching. > > > What processor is in it? Not a Core2Duo. I'm guessing since it's > > circa 2004, probably a Pentium 3 or 4, or possibly an older AMD. > > Pentium 4. From dmesg: > CPU: Intel(R) Pentium(R) 4 CPU 2.60GHz (2593.51-MHz 686-class CPU) > Origin = "GenuineIntel" Id = 0xf29 Stepping = 9 > Features=0xbfebfbff > Features2=0x4400 > Logical CPUs per core: 2 > > > None of those, to my knowledge, have on-die temperatures -- they all > > rely on external H/W monitoring. > > Ok, so what is the 'TM' feature of this cpu then? >From what I can find on Intel's site for your CPU, TM is an emergency switch that lowers the CPU speed to pervent overheating that could damage the processor. Under normal circumstances, it should never trip, and its on/off status (not temperature) is only readable by two pins on the CPU. It can be disabled and enabled by software, but not monitored. http://download.intel.com/design/Pentium4/datashts/29864312.pdf "The Thermal Monitor feature helps control the processor temperature by activating the Thermal Control Circuit (TCC) when the processor silicon reaches its maximum operating temperature. The TCC reduces processor power consumption by modulating (starting and stopping) the internal processor core clocks. The Thermal Monitor feature must be enabled for the processor to be operating within specifications. The temperature at which Thermal Monitor activates the thermal control circuit is not user configurable and is not software visible." > > I just checked http://tingox.googlepages.com/sx270 and sure enough, an > > older P4. coretemp(4) won't work with this. > > I know, I just thought that ther might be something similar for the > TM feature of Pentium 4's. > > > I would start by booting the machine into Windows and install > > SpeedFan. If that thing is able to detect and provide thermal data, > > Ouch. I was hoping that I wouldn't have to do that. The machine have > no internal CD-drive, and for some reason doesn't want to boot from a > (usb) external cd-drive either (kind of funny - it boots from flash > drives and external hard drives. But cd-rom -no). > > I was hoping to solve this without windows in the picture. -- Dan Nelson dnelson@allantgroup.com