[pulseaudio-discuss] [RFC PATCH] alsa-sink: Reduce hardware pointer update syscalls

[Alexander E. Patrakov]

29.09.2014 18:16, David Henningsson wrote:
> Ah, now I get it - the problem is not that the buffer might become half
> empty, the problem is that you might estimate to sleep too long, so your
> process time is effectively cut in half: if you previously had problems
> with process times > 20 ms, you can now potentially have problems with
> process times > 10 ms.
>
> I doubt this is a blocker, as this will resolve itself naturally since
> the potential underruns that might occur will just cause the process
> time to increase, but it's a very valid point and worthy some thought in
> case this patch will ever be v2.
>
> (Still waiting for somebody to report back that it's actually making a
> difference - otherwise I won't fix anything that isn't broken.)

I think it is worth testing on a Xonar DX or any other card with an 
insanely large FIFO size. Unfortunately, I don't own this card, and it 
would be a rather big stretch to ask my friend (who has it) to test a 
patched version of PulseAudio :(

-- 
Alexander E. Patrakov