CPU Overheating?

[Edward M]

On 3/30/2014 5:11 PM, Walter Hurry wrote:
> 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.
     Hello,

        Possibility, the  CPU fan/heatsink housing has collected dust 
and it is causing the CPU to overhead during compiling,
        however cools off later?

       Best regards,
        ed