Re: realtime-preempt-2.6.12-final-V0.7.51-11 glitches

From: Ingo Molnar
Date: Thu Jul 07 2005 - 14:54:03 EST



* Rui Nuno Capela <rncbc@xxxxxxxxx> wrote:

> Hi all,
>
> These are one of my latest consolidated results while using (my)
> jack_test4.2 suite, against a couple of 2.6.12 kernels patched for
> PREEMPT_RT, on my P4@xxxxxx/UP laptop.
>
> See anything funny?

hm, you dont seem to have PREEMPT_RT enabled in your .config - it's set
to PREEMPT_DESKTOP (config-2.6.12-RT-V0.7.51-11.0). OTOH, your 49-01
config has PREEMPT_RT enabled. So it's not an apples to apples
comparison. Just to make sure, could you check 51-11 with PREEMPT_RT
enabled too?

i have just done a jack_test4.1 run, and indeed larger latencies seem to
have crept in. (But i forgot to chrt the sound IRQ above the network
IRQ, so i'll retest.)

Ingo
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