Re: realtime-preempt-2.6.12-final-V0.7.51-11 glitches [no more]

From: Ingo Molnar
Date: Fri Jul 08 2005 - 03:55:44 EST



* Rui Nuno Capela <rncbc@xxxxxxxxx> wrote:

> OK.
>
> Just for the heads up, here goes todays summary results regarding my
> jack_test4.2 test suite against 2.6.12 kernels configured with
> PREEMPT_RT, but... now with 99.9% certainty :)

thanks for the testing!

> ------------------------------ ------------- -------------
> RT-V0.7.51-13 RT-V0.7.49-01
> ------------------------------ ------------- -------------

> Delay Maximum . . . . . . . . : 333 295 usecs
> Cycle Maximum . . . . . . . . : 970 943 usecs
> Average DSP Load. . . . . . . : 45.7 44.4 %
> Average CPU System Load . . . : 15.6 16.3 %
> Average CPU User Load . . . . : 32.0 30.1 %

i'm wondering - is this slight increase in CPU utilization (and
latencies) due to natural fluctuations, or is it a genuine overhead
increase?

Ingo
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