On Fri, 10 Feb 2023 at 23:46, Fons Adriaensen <f...@linuxaudio.org> wrote: > > On Thu, Feb 09, 2023 at 01:34:52PM +0100, Wim Taymans wrote: > > > real JACK is more mature and does things differently (mostly device > > wakeup with IRQ instead of timers) > > The real difference between the two methods is 'sample count' > versus 'time' as the source of the event that starts a period. > > I always wondered why one would use a timer, it just amounts > to polling. Suppose you look every 1 ms to check if there
You don't need to use polling with timerfd, just set the timeout according to some clock, add the timerfd to some poll loop and it wakes up on time. Very much like how ALSA wakes you up when a period expires. Wim > are enough samples for a period. That means you can be up > to 1 ms late. Compare that to the period time of 1.33 ms > when using 64 samples / 48 kHz. Up to 3/4 of the available > time to compute a period could be lost... > > Or am I missing something ? > > Ciao, > > -- > FA > _______________________________________________ Linux-audio-dev mailing list -- linux-audio-dev@lists.linuxaudio.org To unsubscribe send an email to linux-audio-dev-le...@lists.linuxaudio.org
