Re: [Fwd: Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0.4]

Ingo Molnar
2004-10-30T11:33:41Z

* Paul Davis <paul@linuxaudiosystems.com> wrote:

> IIRC, Rui was running with -p128, which at 48000kHz is 2600usecs (and
> longer at 44100kHz). If the maximum process cycle was on the order of
> 1500usecs, that leaves nearly 1ms until the next interrupt is due.
> Unless jackd was held up between computing the process cycle time and
> entering poll, it doesn't seem that the process cycle ever gets close
> to the interrupt interval duration.

yeah, i'd agree with this, there must be something else going on.

> So I don't think that delays caused *during* jackd's processing cycle
> are involved here. However, I agree that your suggestion to check for
> this before computing max_delay is probably wise in general.

yep.

Ingo