Re: [alsa-devel] SNDRV_PCM_INFO_BATCH

David Henningsson wrote:

So, PulseAudio removed timer scheduling for drivers with SNDRV_PCM_INFO_BATCH, and released 5.0. Meanwhile, USB drivers still have SNDRV_PCM_INFO_BATCH, so this leads to performance regressions for USB sound cards.

The question remains - what does SNDRV_PCM_INFO_BATCH really mean?

For your purposes, it means that the pointer accuracy is likely to be worse than that of other sound cards.

There should be a mechanism to report the actual granularity.

Regards, Clemens