From owner-freebsd-questions@FreeBSD.ORG Mon Jul 21 19:44:51 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A49CE1065676 for ; Mon, 21 Jul 2008 19:44:51 +0000 (UTC) (envelope-from sonic2000gr@gmail.com) Received: from fk-out-0910.google.com (fk-out-0910.google.com [209.85.128.184]) by mx1.freebsd.org (Postfix) with ESMTP id 1EB3F8FC1C for ; Mon, 21 Jul 2008 19:44:50 +0000 (UTC) (envelope-from sonic2000gr@gmail.com) Received: by fk-out-0910.google.com with SMTP id k31so1109295fkk.11 for ; Mon, 21 Jul 2008 12:44:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from :user-agent:mime-version:to:cc:subject:references:in-reply-to :content-type:content-transfer-encoding; bh=kJ/eksA4rmeNyUP4Cy25awJ9Wg0Qz+p5hDFgzEr3coU=; b=V6ihAGaQWBCDbf5h+of2wiMCRN5BZdNAhgNA69wz1or2NWwdlhbgCyymzHteArIBPt SOgHMfcl5ptsUHfjVgW34hxThf4S48X0OTlXnixqFcaAsqCMKL6qlud08tPR8BUT1Ed+ ZZmM46Qm+3zM4RP48573eGK7+q0tZZM4ObgMc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=OxEVBRb1xr0qvgQLFJ/+PVVOxqOQX9KCLBcx85Oapsa9zQpaNws4KHEpkKhO2NJ50k 5R8ziQBZ3i9W3sYB6kX6tTI0/X/cvfXhpB2hs/oHc+dMwN/pB0JgzTdKJS10hYS6psVc u5Xl+0pC6qAq/4tHXtUH1MI1jagVEn7vmsMN8= Received: by 10.181.21.2 with SMTP id y2mr2249454bki.44.1216669489572; Mon, 21 Jul 2008 12:44:49 -0700 (PDT) Received: from atlantis.dyndns.org ( [85.73.147.46]) by mx.google.com with ESMTPS id d13sm14899768fka.3.2008.07.21.12.44.47 (version=TLSv1/SSLv3 cipher=RC4-MD5); Mon, 21 Jul 2008 12:44:48 -0700 (PDT) Message-ID: <4884E72E.8060508@gmail.com> Date: Mon, 21 Jul 2008 22:44:46 +0300 From: Manolis Kiagias User-Agent: Thunderbird 2.0.0.14 (X11/20080703) MIME-Version: 1.0 To: Achilleas Mantzios References: <48849FFD.10285.C71CED5@iwrtech.iwr.ru.ac.za> <200807211656.10874.achill@matrix.gatewaynet.com> <4884A8A7.3070108@gmail.com> <200807212205.02066.achill@matrix.gatewaynet.com> In-Reply-To: <200807212205.02066.achill@matrix.gatewaynet.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-questions@freebsd.org, iwrTech@iwr.ru.ac.za Subject: Re: Monitoring CPU temperature: mbmon shows 201 degrees C X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Jul 2008 19:44:51 -0000 Achilleas Mantzios wrote: >>> >>> >> As you already noticed, mbmon is no good in recent hardware. It works >> successfully in my 865-based systems though. >> As others have said, I would recommend adding a rear out-take fan. Do >> not rely on the PSU's fan to take all the warm air out. The PSU >> generates heat on its own, and the fan may not be sufficient. A rear >> out-take fan should be located rather high - at CPU height - since warm >> air always goes up. This is where most cases have a place for the fan >> anyway. >> > It is indeed as you say. The fans on my case are: > the PSU fan, one takeout fan just below the PSU and the CPU fan. > It is a medium tower size case. The thing is on the bottom PCI slot > i have installed a Kodicom 4400 for video capture for use with zoneminder, > (the FreeBSD port is available from the zoneminder site) > and right above that a LML video capture card. > and then while capturing 5 full frame-rate (25fps) cameras in zoneminder > a) the load never falls below 0.4 even while no users use it (it is our family workstation as well:) > b) all the heat from the kodicom flows higher to the CPU/memory area of the case > > Having said that, the issue with the temperature must not be my thing :( > after kldload coretemp, i get > [achix@panix ~]% sysctl -a | grep tempera > hw.acpi.thermal.tz0.temperature: 40,0C > dev.cpu.0.temperature: -1 > [achix@panix ~]% > The first always is stuck to 40 and dev.cpu.0.temperature to -1. > This -1 probably means your CPU is not supported. The man page says "Intel Core or newer" CPUs, and as I understand this is specific to Intel and will not work on AMD. It works fine on my core2duo laptop. I don't know if it works with the earlier Intel CoreDuo (not core2duo) Assuming the heat is what is actually causing you the problems, your options are rather limited: Move to a bigger case with options for better ventilation (maybe 12cm fans in front / rear) or use fans with higher CFM ratings (that will also make it more noisy, one more factor to consider). I currently have a machine with a 25cm side fan. Completely noiseless, and always runs cool.