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SubjectRe: 2.6.0-test1-mm2 music skips
At Sun, 20 Jul 2003 21:21:43 -0400,
Ed Sweetman wrote:
>
> Christian Axelsson wrote:
> > On Sun, 2003-07-20 at 22:34, Lukas Kolbe wrote:
> >
> > Please read the O*int threads.
> > It's probably Con's new scheduler that is causing these problems.
> > If you are using alsa, try the OSS emulation as it seems to help abit.
> >
>
> I've been using the 2.5 kernel for a long time now and the 2.4 kernel
> since it was just turned into 2.3. There have been these "problems"
> since 2.3, this is not something new caused by any new schedulers. The
> schedulers can cause problems, no doubt, but they also make userspace
> programming issues apparent. The fact that going to oss emu only proves
> that this is mostly a userspace problem. ALSA drivers have to be coded
> with much more attention to latency because it's very specific about
> being run on time. You can only send it a small amount of data every
> write you make to the soundcard.

well, just a small correction: it's ALSA output plugin of xmms, not
ALSA drivers. it uses the hardware buffer directly (or mmapped) while
xmms OSS output plugin has much larger internal buffers.


Takashi
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