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    SubjectRe: [discussion]sched: a rough proposal to enable power saving in scheduler
    On 08/16/2012 02:53 PM, preeti wrote:

    >
    > Hi everyone,
    >
    > From what I have understood so far,I try to summarise pin pointed
    > differences between the performance and power policies as found
    > relevant to the scheduler-load balancing mechanism.Any thoughts?


    Currently, the load_balance trigger will be called in timer for periodic
    tick, or dynamic tick.
    In periodic tick, the cpu is waked, so do load_balance is not cost much.
    But in dynamic tick. we'd better do power policy suitable scenario
    checking in nohz_kick_needed(), and then do nohz_balancer_kick on least
    but non-idle cpu if possible. that reduce the idle cpu waking chance.

    Any comments?



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