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    SubjectRe: [RFD] Automatic suspend
    On Mon, Feb 16, 2009 at 11:23:30PM +0000, Matthew Garrett wrote:
    > On Tue, Feb 17, 2009 at 12:19:38AM +0100, Rafael J. Wysocki wrote:
    >
    > > This, again, seems to be a bit x86-centric. :-) The Android people are telling
    > > us that on the hardware they deal with it does make sense to put the entire
    > > system to sleep even for relatively short periods of time, since the latencies
    > > involved are not too bad.
    >
    > Arve said that the power state was equivalent in idle and suspend, but
    > that they preferred suspend because it stopped any periodic timers. I'd
    > be more interested in making sure that unnecessary timers aren't running
    > than focusing on automatically entering system-wide suspend - Nokia have
    > been managing this since 2005 with good results.
    >

    I think they where talking timers as hardware devices pulling electrons,
    not SW timers triggering wake ups. I guess the timer hardware could be
    running, and pulling power, even when not programmed to trigger any
    event or IRQ.

    --mgross


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