trying to scale the cpu freq

Mark Shuttleworth mark at
Thu Sep 23 11:45:57 UTC 2004

OK, can you put that on your feature goals list for Hoary, for the 
laptop team?

Matthew Garrett wrote:

>On Thu, 2004-09-23 at 11:34 +0100, Mark Shuttleworth wrote:
>>Do you think it would be possible to guess which modules are 
>>appropriate, and have those configured for loading during the 
>>installation process?
>The kernel knows the necessary information - /proc/cpuinfo exports
>everything. There's a couple of minor sticking points regarding old
>Pentium IIIs (what module you have to use can depend on the motherboard
>chipset, IIRC). On the other hand, I don't think there's currently any
>sort of hotplug event generated for processors.
>The easiest answer at the moment is probably to have a boot-time or
>install-time script that parses /proc/cpuinfo and loads the appropriate
>module. On x86, if that fails the next best thing would be to try the
>acpi cpufreq module - ACPI exposes the processor performance states as
>well, but often provides less control.

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