> ? ?I recently submitted two patches for ALSA kernel stack that > will guarantee wake_ups to happen at each periodic interrupt. > Currently that is not the case when avail_min is greater than > period size. It's unclear to me why you would want to set avail_min to more than a period and still get a wake-up for each period. avail_min is supposed to amount to the interval during which which you don't want to be awaken. Somehow isn't your period duration not well configured? > ?The patch doesn't seem to cause regression but might break > applications that depend on non-standard use of ALSA API. > > Takashi Iwai noted that PulseAudio might complain about the change > (not that PulseAudio use non-standard methods). PulseAudio sets avail_min to the equivalent of the sleep time (with timer-based scheduling) or enables period events with regular interrupt-based scheduling. In the latter case the value of avail_min shouldn't matter. Sounds like your patch would have no effect on PA. - Pierre
