Re: [PATCHSET] 0/3 Dynamic cpufreq governor and updates to ACPI P-state driver

[Alexander Bokovoy <ab@altlinux.org>]

On Thu, Oct 23, 2003 at 10:19:44AM +0200, Arjan van de Ven wrote:
> On Wed, 2003-10-22 at 20:21, Pallipadi, Venkatesh wrote:
> 
> > And with the kind of power savings that comes with these frequency
> > changes, this behaviour 
> > results in  longer battery life. However, as yet I do not have any
> > numbers to quantify this gain, 
> > mainly because I do not have any setup where I can measure actual power.
> >  
> 
> some time ago I did this by using the ACPI method of asking the battery
> what the current use is at this point in time; it's of course not as
> exact as a full measurement setup but it's a nice poor mans power watch
> too ....
Unfortunately, there is a number of ACPI-enabled BIOSes which report wrong
battery rate when EST is in action -- they still continue to report a rate
which corresponds to highest CPU frequency despite the fact that actual
frequency might be the lowest one.

-- 
/ Alexander Bokovoy
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