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SubjectRe: how to measure scheduler latency on powerpc? realfeel doesn't work due to /dev/rtc issues
"William" == William Lee Irwin, <William> writes:
William> Not at all. Just stamp at wakeup and difference when it runs.


On Mon, May 12, 2003 at 03:04:09PM +1000, Peter Chubb wrote:
> That then doesn't include interrupt latency. The nice thing about the
> amlat tests is that the test predicts when the next interrupt should
> occur, then measures the time between that prediction and the process
> running in userspace. If you just timestamp at wakeup, you miss all
> the time between interrupt generation and noticing that the process is
> to wake up.

Of course. But that is not the scheduler's problem.


-- wli
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