From owner-freebsd-questions@FreeBSD.ORG Sat Jul 9 16:22:33 2011 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 348691065673 for ; Sat, 9 Jul 2011 16:22:33 +0000 (UTC) (envelope-from invalid.pointer@gmail.com) Received: from mail-pw0-f54.google.com (mail-pw0-f54.google.com [209.85.160.54]) by mx1.freebsd.org (Postfix) with ESMTP id 0AAFA8FC20 for ; Sat, 9 Jul 2011 16:22:32 +0000 (UTC) Received: by pwi7 with SMTP id 7so2270965pwi.13 for ; Sat, 09 Jul 2011 09:22:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; 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; bh=THwDo/ckmTK2IzI8qeZTU857X9LvefsS/dF//dm7b4k=; b=OE/zmlV3K52rr3PwYQsqvetFA6BJE8xIXBQAAD6A92RXHpWxzkG/LfOvbSiMiq4t77 RQ7+wU1pY36RIdwvG7S7JpJabwDTHgjVyUNBh4zYKLKQxPKPwl+VHP1J5IElt47MxHro tkkMphn/X7DZLPJQPXurM9seP9x4tSfRFbfbY= Received: by 10.68.17.5 with SMTP id k5mr4232473pbd.92.1310228552450; Sat, 09 Jul 2011 09:22:32 -0700 (PDT) Received: from [127.0.0.1] ([14.99.114.168]) by mx.google.com with ESMTPS id d1sm7125231pbj.40.2011.07.09.09.22.28 (version=SSLv3 cipher=OTHER); Sat, 09 Jul 2011 09:22:30 -0700 (PDT) Message-ID: <4E18805F.2000401@gmail.com> Date: Sat, 09 Jul 2011 21:52:55 +0530 From: Manish Jain User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.4) Gecko/20100608 Thunderbird/3.1 To: Chuck Swiger References: <20110709053404.B1FC910656AE@hub.freebsd.org> <4E18332F.1040805@gmail.com> <0C3600E5-1324-4852-894A-D29F3445660C@mac.com> In-Reply-To: <0C3600E5-1324-4852-894A-D29F3445660C@mac.com> Content-Transfer-Encoding: 7bit MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-questions@freebsd.org Subject: Re: disk spinning continuously + cpu possibly overheating = sudden death 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: Sat, 09 Jul 2011 16:22:33 -0000 Hi Chuck, What do I make of it when the system runs flawlessly both on Win XP and FreeBSD-8.0-amd64 ? BTW, 8.2 does NOT - for reasons unfathomable to me - install /usr/sbin/apmd. I don't know how significant that is, but I have had to insert into rc.conf : apm_enable="NO" apmd_enable="NO" Thanks for any help. Regards Manish Jain [1]invalid.pointer@gmail.com On 09-Jul-11 19:59, Chuck Swiger wrote: On Jul 9, 2011, at 3:53 AM, Manish Jain wrote: I am running FreeBSD-8.2-amd64 on a Western Digital 320 GD disk and a quad-core AMD Phenom processor. After booting, the disk keeps continuously (meaning continuous I/O) and after a couple of hours (on the console with the X server not running), suddenly the whole system dies, powering off in a flash. I suspect the continuous I/O is causing is a CPU overheat which results in this behaviour. While you probably do have flaky hardware causing problems, even under the wors t case situation, a modern hard drive doesn't use more than about 10W even unde r full load (ie, continuous writes). Compare that with the 125W thermal design rating of a 4-core Phenom. If your system is overheating, it's not because of what a hard drive is doing. It should be easy to tell if thermals are an issue-- is the CPU heat sink getti ng too hot to touch just before this shutdown? If so, it's likely to be a prob lem with a cooling fan or heatsink attachment. Also, what is it that makes you think your disk is doing continuous I/O? What does "iostat 5" or similar show? Regards, References 1. mailto:invalid.pointer@gmail.com