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    SubjectRe: [RFC] time: xtime_lock is held too long
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    Le vendredi 06 mai 2011 à 18:59 +0200, Andi Kleen a écrit :
    > On Fri, May 06, 2011 at 12:18:27PM +0200, Thomas Gleixner wrote:

    > If that code path shows up in profiling. Only the timer interrupt
    > did so far.
    >
    > > That's the completely wrong aproach, really. If stuff takes too long,
    > > then we need to tackle it at the root of the problem and not solve it
    > > by sprinkling magic prefetches all over the place.
    >
    > If you have a better way to make it faster please share it.
    >

    Unless I am very mistaken, it cannot explain my original report of up to
    24.000 instructions waiting in ktime_get()

    BTW, how many consecutive prefetch() a cpu can 'store/execute' before
    throwing away hints ?



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