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    SubjectRe: [linux-pm] suspend blockers & Android integration
    From
    2010/6/6  <david@lang.hm>:
    > On Sun, 6 Jun 2010, Brian Swetland wrote:
    > if you could shrink the time awake to 0.01 second per wakeup you would shift
    > this all up a category (and avoiding the need to wake everything up to
    > service a timer would help do this)
    >
    > this effort very definantly has diminishing returns as you go to larger
    > sleep periods as the constant standby power draw becomes more and more
    > dominating. someone mentioned that they were getting the sleep time of
    > normal systems up past the 1 second mark with the 10 second mark looking
    > very attainable. that is where you get the most benifit for whatever changes
    > are needed. getting up to a 2 min sleep time really gives you about all the
    > benifit that you can get, going from there to 15 min makes very little
    > difference.
    >
    > don't let chasing the best possible sleep time prevent you from considering
    > options that would be good enough in time, but would drastically reduce the
    > maintinance effort (as things could be upstreamed more easily), and would be
    > usable on far more systems.

    Not to mention the fact that there's nothing fundamental that prevents
    dynamic PM to reach > 15 min idle. It's a matter of time before we
    find the tools needed. The amount of work that suspend blockers would
    require to implement properly in user-space other than Android just
    doesn't match the power savings.

    --
    Felipe Contreras


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