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Bug#330402: mention cpu-freq and ACPI throttling are different



On Wed, Sep 28, 2005 at 05:43:45AM +0800, Dan Jacobson wrote:
> Package: linux-doc-2.6.12
> Version: 2.6.12-2
> Severity: wishlist
> Tags: upstream
> 
> Gentlemen, Documentation/cpu-freq/user-guide.txt.gz,
> and the relevant Documentation/*/*/*ACPI*/ document (that I cannot
> find), should both emphasize that
> /proc/acpi/processor/CPU/throttling
> and
> /sys/devices/system/cpu/cpu0/cpufreq/stats/
> while appearing to describe the same thing, the e.g., same eight
> steps, etc., are apparently independent of each other.
> 
> One finds that a process that took 1 second will take 7 seconds when
> choosing the lowest cpufreq step. Choosing the lowest throttling step
> on the other hand causes that process to take 14 seconds!
> And combining both cpufreq and throttling causes it to take much
> longer. All these phenomena should be explained.

Hi Dan,

Could you please draft an amendment to the documents in question
and I will pass it on to upstream for consideration.

-- 
Horms



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