[haiku-commits] Re: r34664 - haiku/trunk/src/add-ons/kernel/drivers/audio/hda
- From: Ingo Weinhold <ingo_weinhold@xxxxxx>
- To: haiku-commits@xxxxxxxxxxxxx
- Date: Thu, 17 Dec 2009 13:36:49 +0100
On 2009-12-17 at 11:55:40 [+0100], Ingo Weinhold <ingo_weinhold@xxxxxx>
wrote:
> On 2009-12-17 at 10:08:49 [+0100], Axel Dörfler <axeld@xxxxxxxxxxxxxxxx>
> wrote:
> > FWIW I've updated the driver and media node to its latest version, and
> > it works fine here (although I still have occasional hickups).
>
> Same here. I've tracked the audio skips a bit further and the guilty party
> definitely sits upstream of the audio mixer, since the buffers already
> arrive late there. This can be easily reproduced on my machine for instance
> by running a -j8 Haiku image build. The buffers immediately start arriving
> 10 or more ms late. Due to the generously estimated latencies the skips
> only happen beyond 50 ms lateness. I wasn't able to test with the latest
> revision yet. The recent libmedia and mp3 reader changes might already have
> improved the situation.
Kind of a mixed bag... The changes generally seemed to have improved
lateness of buffers arriving at the mixer. Even with a -j8 build running
there are rarely any buffers arriving with greater lateness than 1 ms (which
I use as the output threshold). At the beginning of an audio track there are
always several buffers late (usually between 10 and 20 ms). Unfortunately
the occasional audio skips (which also still happen in an idle system) are
no longer only a few 0.1 s long, but extend over several seconds (sometimes
as worse as a minute!). :-/
CU, Ingo
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