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    SubjectRe: A few questions and issues with dynticks, NOHZ and powertop
    On 4/5/2010 8:14, Paul E. McKenney wrote:
    > So the main issue is that for many workloads, it is best to run full bore
    > and get done quickly, thus allowing the entire machine to be powered down?

    yep

    >
    > If so, it seems likely that there would be some workloads that were sometimes
    > unable to use all the CPUs, in which case shutting down (idling, offlining,
    > dyntick-idling, whatever) the excess CPUs might nevertheless be the right
    > thing to do.

    but the point is that the normal scheduler + idle behavior gives you exactly that
    in a natural way !
    If you don't have enough work (tasks) to keep all cores busy, the others are and stay idle.


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