Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0

[K.R. Foley]

Ingo Molnar wrote:
> * K.R. Foley <kr@xxxxxxxxxx> wrote:
>
>
> > I use the rtc-debug and amlat to generate histograms of latencies
> > which is what I was trying to do when I found the rtc problem the
> > first time.  I believe that rtc-debug/amlat is much more accurate for
> > generating histograms of latencies than realfeel is because the
> > instrumentation is in the kernel rather than a userspace program.
>
>
> ah, ok - nice. So rtc-debug+amlat is the only known-reliable way to
> produce latency histograms?

Don't know that for sure, but it is the most reliable way that I am 
aware of.

> Btw., rtc-debug's latency results could now be cross-validated with
> -V0.4's wakeup tracer (and vice versa), because the two are totally
> independent mechanisms.

Agreed. :)

> 	Ingo

kr
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