Re: [PATCH] i386: Selectable Frequency of the Timer Interrupt

[Pavel Machek]

Hi!

> > Alan tested it and said that 250HZ does not save much power anyway.
> 
> Len Brown, a year ago: "The bottom line number to laptop users is battery
> lifetime.  Just today somebody complained to me that Windows gets twice the
> battery life that Linux does."
> 
> And "Maybe I can get Andy Grover over in the moble lab to get some time on
> that fancy power measurement setup they have...
> 
> "My expectation is if we want to beat the competition, we'll want the
> ability to go *under* 100Hz."
> 
> But then, power consumption of the display should preponderate, so it's not
> clear.
> 
> Len, any updates on the relationship between HZ and power consumption?

Last time I checked, HZ=100 to HZ=1000 difference was about 1W, about
twice as much as disk spinning up vs. disk spinned down.
								Pavel
-- 
teflon -- maybe it is a trademark, but it should not be.
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