Re: [ecasound] playback overrun with alsahw,0,0 but not with /dev/dsp

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Subject: Re: [ecasound] playback overrun with alsahw,0,0 but not with /dev/dsp
From: Hans-Georg Fischer (hg.liste_AT_snafu.de)
Date: Thu Apr 03 2003 - 18:24:48 EEST

On Thu, 3 Apr 2003, Kai Vehmanen wrote:

> On Sat, 29 Mar 2003, Hans-Georg Fischer wrote:
>
> > ecasound ecasound -f:16,2,44100 -i /dev/dsp -o t.wav
> > works for houres without problems. Even under heavy load.
> [...]
> > But
> > ecasound -f:16,2,44100 -i alsahw,0,0 -o t.wav
> > produces a bunch of
> > (audioio-alsa) warning! playback overrun - samples lost! Break was at
> > least 30.38 ms long
>
> This is because OSS doesn't provide any means of detecting xruns
> from applications. So the xruns probably do occur even with OSS,
> but ecasound is not able to tell you about them.
>
> By running ecasound with rt-privileges (as root), you should be able to
> avoid xruns. If you still get them, then you need to fine-tune your
> hard-drives and/or kernel a bit (see
> http://linux.oreillynet.com/pub/a/linux/2000/11/17/low_latency.html?page=1
> ).

Thankyou I've learned a lot. 

-- 
Hans-Georg

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