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

Paul Davis
2004-10-29T14:03:49Z

>> if (poll (driver->pfd, nfds, driver->poll_timeout) < 0) {
>
>in Rui's test (9 fluidsynth instances running), what would be the value
>of nfds - 9 or 1? I.e. is the '9 streams' abstraction provided by jackd,
>and you map it to a single alsa driver fd over which you poll, or is
>each stream a separate fd?

for almost all audio interfaces, there is one fd per hardware
device. so whether its a 26 channel device or a simple stereo device,
there is one fd. jackd will be polling a single fd in that call under
almost all circumstances, and certainly those used in rui's testing.

--p