[haiku] Re: A little audio survey
- From: pete.goodeve@xxxxxxxxxxxx
- To: haiku@xxxxxxxxxxxxx
- Date: Wed, 20 Jul 2011 15:04:24 -0700
On Wed, Jul 20, 2011 at 12:47:42AM -0400, Sean Collins wrote:
> pete.goodeve@xxxxxxxxxxxx wrote:
>
> >Ouch! (I thought you had at one time said you were getting low latency?)
>
> I have no idea when it got this bad but I read your email and decided
> to check, its getting bad.
But, something I overlooked in my last post: you're not experiencing an
audio hiatus at boot-up are you? I wonder if the silence only happens
on single-core units? Axel -- what's yours?
>
> >It does seem that the glitches are masked by large buffers. I think they
> >can still occur rarely, and latency increases, but the buffers are longer
> >than the blackouts, so they cover them quite nicely.
> >
> I dunno, I know when browsing with webpositive or any other heavy
> rendering APP I get glitches on a single core machine I have.
Is that HDA/long-latency too? I think the possibility of glitches all
depends on how the various buffer sizes (driver and upstream) interact.
If the driver buffer always gets filled in time before it actually has
to go to the driver, there won't be any crackles. In any case, I'd guess
that a multi-core machine might never experience the blackouts, because
the core handling the audio would not be bothered by the other one doing
the display.
>
> >
> I'd like to try your patchs just to see how they effect my machine.
> send me a email with them and I will give them a go.
OK, but I don't think you'll actually see any effect. They don't do
anything for default latency, and if you aren't hearing glitches they
won't improve anything there either.
-- Pete --
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