What process throttles CPU?

Doug Stewart dstewart at atl.lmco.com
Fri Apr 29 14:56:11 UTC 2005


Steve Snyder wrote:
> Yesterday, while doing a large build on an FC3 machine, I received 
> many warnings from the kernel that the CPU clock speed was being 
> adjusted due to the temperature beyond the threshhold.
> 
> Considering the machine I was using (a Dell Precision Xeon box), I can 
> certainly believe the warnings.  I wonder, though, how the kernel 
> knew the threshhold.
> 
> My first thought was the info beneath /proc/acpi/, 
> yet /proc/acpi/thermal_zone/ is empty.
> 
> I then thought of cpuspeed, but the /etc/cpuspeed.conf file is just a 
> sample and had only commented-out config parameters.
> 
> So... how does the kernel know what the thermal threshhold is for a 
> given system?
> 
> Thanks.
> 


cpuspeed --help

-- 
----------
Doug Stewart
Systems Administrator/Web Applications Developer
Lockheed Martin Advanced Technology Labs
dstewart at atl.lmco.com




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