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    SubjectRe: PREEMPT_RT vs I-PIPE: the numbers, part 2

    * Ingo Molnar <mingo@elte.hu> wrote:

    >
    > * Kristian Benoit <kbenoit@opersys.com> wrote:
    >
    > > Your analysis is correct, but with 600,000 samples, it is possible
    > > that we got 2 peeks (perhaps not maximum), one on the logger and one
    > > on the target. So in my point of view, the maximum value is probably
    > > somewhere between 55us / 2 and 55us - 7us. And probably closer to 55us
    > > / 2.
    >
    > you could try the LPPTEST kernel driver and testlpp utility i
    > integrated into the -RT patchset. It avoids target-side latencies
    > almost completely. Especially since you had problems with parallel
    > interrupts you should give it a go and compare the results.

    correction: logger-side latencies are avoided.

    Ingo
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