On 03/21/2012 02:32 PM, Fons Adriaensen wrote: > Hello, > > Does anyone know what sort of timer is used by the ALSA > loop device, and if this can be changed in some way ?
It uses the software clock (jiffies). It also has separate timers for playback and capture and AFAICT it can not be changed. Maybe you should ask on the alsa-dev list or read for yourself: http://git.alsa-project.org/?p=alsa-kernel.git;a=blob;f=sound/drivers/aloop.c > On the system I'm working on now, wakeup times while waiting > for a period to be available (as done by Jack and zita-alsa-pcmi) > seem to be quantised in steps of 3.3ms or so. Which means it > sometimes wakes up 3/4 or more of a period too late. Next one > will be xrun in that case. > > Ciao, > _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev