Messages in this thread | | | Date | Fri, 15 Jul 2005 17:41:34 +0200 | From | Pavel Machek <> | Subject | Re: [PATCH] i386: Selectable Frequency of the Timer Interrupt |
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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. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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