[LAD] ALSA latency and MMAP

Clemens Ladisch clemens at ladisch.de
Tue Sep 8 06:39:33 UTC 2009

Paul Davis wrote:
> On Mon, Sep 7, 2009 at 10:54 AM, Clemens Ladisch<clemens at ladisch.de> wrote:
>> Paul Davis wrote:
>>> snd_pcm_write() and snd_pcm_read(), IIRC, allow reads&writes of chunks
>>> of data that are not period-sized.
>> Yes.  So does snd_pcm_mmap_commit().
> something must have changed. "back in the day", you could not possible
> use the mmap API to deliver > 1 period at a time. has that changed?

I don't know about "those days", but if that was the case then, it has
indeed changed.

Best regards,

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