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    SubjectRe: CFS review

    On Wed, 1 Aug 2007, Andi Kleen wrote:

    > > especially if one already knows that
    > > scheduler clock has only limited resolution (because it's based on
    > > jiffies), it becomes possible to use mostly 32bit values.
    > jiffies based sched_clock should be soon very rare. It's probably
    > not worth optimizing for it.

    I'm not so sure about that. sched_clock() has to be fast, so many archs
    may want to continue to use jiffies. As soon as one does that one can also
    save a lot of computational overhead by using 32bit instead of 64bit.
    The question is then how easy that is possible.

    bye, Roman
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      Last update: 2007-08-01 15:35    [W:0.020 / U:4.116 seconds]
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