throttling cpu speed to run cooler

[jason]

Robert Storey wrote:

>Dear All,
>
>I've been looking for a utility to reduce cpu speed to make my laptop
>run cooler. Ideally, it should reduce cpu speed to about 20% when speed
>is not needed, and restore speed to 100% when the load requires it.
>
>There is such a utility for Linux, called powernowd:
>
>http://www.deater.net/john/powernowd.html
>
>Using this with Debian, my cpu temperature drops by about 15 degrees
>Celsius!
>
>I'm just wondering if a utility similar to powernowd already exists for
>FreeBSD? I did search the mailing list archives and found some talk
>about developing just such a program, but never found out if it was
>finally done, and what the said package might be called.
>
>regards,
>Robert
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>
>  
>
man acpi_thermal and man acpi.  There are sysctl knobs to throttle your cpu.