Messages in this thread | | | Date | Sat, 5 Jul 2003 19:29:48 -0700 (PDT) | From | Davide Libenzi <> | Subject | Re: 2.5.74-mm1 |
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On Sun, 6 Jul 2003, Diego Calleja [ISO-8859-15] García wrote:
> El Sat, 5 Jul 2003 23:09:12 +0200 Daniel Phillips <phillips@arcor.de> > escribió: > > > The "better" mechanism for sound scheduling is SCHED_RR, which requires > > root privilege for some reason that isn't clear to me. Or maybe there > > once was a good reason, back in the days of the dinosaurs. > > I don't think mp3 playing needs nothing special. > > Mp3 decoding on today's computers taks insignificant amounts of cpu time. > Having mp3 skips even in light loads in a 2x800 box seems just > unacceptable.
It is not a problem of CPU time spent, it is a timing problem. Many sound players do use to feed the sound card with write()s that are typically 8-16Kb and it is sufficent 100-200ms of CPU black-out (at 44100 16bit) to have a buffer under-run and an audio skip.
- Davide
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