Re: how to measure scheduler latency on powerpc? realfeel doesn't work due to /dev/rtc issues

[William Lee Irwin III]

"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