Date: Mon, 31 Mar 2014 00:11:43 +0000 (UTC) From: Walter Hurry <walterhurry@gmail.com> To: freebsd-questions@freebsd.org Subject: CPU Overheating? Message-ID: <lhabru$3o1$1@ger.gmane.org>
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I have a bog-standard Acer laptop with FreeBSD 9.2 (amd64). CPU is AMD Athlon(tm) 64 X2 Dual-Core Processor TK-42 (1596.09-MHz K8-class CPU) per dmsg. >From time to time, it shuts off without warning, as if the power cable has been pulled out. Nothing in any of the logs, and when I power up again it starts normally after replaying the journal. The shut-off is invariably when it is doing a compile of a big port. I therefore suspect that the CPU is overheating and that the BIOS is causing the shutdown. To investigate the problem, I have done a 'kldload coretemp' and am periodically running: 'sysctl hw.acpi.thermal.tz0.temperature'. So far (only 6 runs) this is reporting temperatures between 76C and 84C. Question 1: Is this the canonical way to monitor CPU temperature? Question 2: Is this too hot? Question 3: I plan to load the module in /boot/loader.conf and set up a cron job to run every minute and log the result to a file. Is this sensible, or overkill? Thanks.
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