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    SubjectRe: VST and Sched Load Balance
    Srivatsa Vaddagiri wrote:

    >
    > Hmm ..I guess we could restrict the max time a idle CPU will sleep taking
    > into account its balance interval. But whatever heuristics we follow to
    > maximize balance_interval of about-to-sleep idle CPU, don't we still run the
    > risk of idle cpu being woken up and going immediately back to sleep (because
    > there was no imbalance)?
    >

    Yep.

    > Moreover we may be greatly reducing the amount of time a CPU is allowed to
    > sleep this way ...
    >

    Yes. I was assuming you get some kind of fairly rapidly diminishing
    efficiency return curve based on your maximum sleep time. If that is
    not so, then I agree this wouldn't be the best method.

    --
    SUSE Labs, Novell Inc.


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