On Thu, Sep 3, 2009 at 3:05 PM, Clemens Ladisch<clemens@xxxxxxxxxx> wrote: > > The interrupts of other drivers are based on the PCM stream clock, but > the snd-dummy driver has to emulate interrupts using the system timer, > so it is the only one affected by timer-related changes. ok, got it > > The driver relies on the kernel's system timer. It might be possible > to rewrite it to use high-resolution timers, if the CentOS kernels > supports it. I'll have a look into it > > It would be easier to try to change the constraints of the sound card > that snd-dummy tries to emulate; set USE_PERIODS_MIN to four or so, > and increase period_bytes_min to some value that is at least as large > as the numer of bytes per timer tick (with 2 channels and 16 bits at > 48 kHz, there are 192000 bytes per second). > I'll have a look into this and then I'll report here. Clemens, thanks for your help! -giovanni _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
