Re: [ACPI-sppt] Who controls cpu fan (Asus M2N) ?

Am 04.07.2003 02:09 schrieb(en) Rainer M.:
> And what happened? Instead of my processor catching fire or the cpu
> fan simply
> starting to run the cpu slows down in frequency to 300MHz in the end.
> But
> /proc/acpi/processor/CPU1/throttling still showed T0-mode (I found out
> using
> a bogomips-tool that the frequency gets scaled down).
> If then I stop compiling and wait for some minutes, the cpu's
> frequency
> increases again.
> 
> If my interpretation is correct, then this behaviour can't be due to
> acps
> because if acps scales down the frequency it would be visible at
> /proc/acpi/processor/CPU1/throttling, wouldn't it?
> But can the dsdt table be responsible for this or is it a cpu-built-
> in
> 
> feature?

If it is a CPU with a Pentium4-core, then this is the heat-throttling-
feature, which I supposed to be widely known. There is even a kernel-
option under "Machine Check Exceptions" where you can get the 
corresponding interrupts logged in the kerne-logfile.

Darko

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