Messages in this thread | | | Date | Wed, 22 Jun 2005 19:34:49 +0200 | From | Ingo Molnar <> | Subject | Re: PREEMPT_RT vs I-PIPE: the numbers, part 2 |
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* 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.
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