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Am Mon, 28. Dec 2009 um 15:24:02 -0500 schrieb lanas:
> Le Lundi, 28 D=E9cembre 2009 20:17:21 +0100,

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> Guido Scholz  a =E9crit :

Hi "lanas",

could you please reply to the list an not to my private e-mail?
> > as far as I understood your experiment, you compared these two setups

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> > to conclude "QARecord is to blame":

=20

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> Not really.  And I forgot to mention jackmix which looks like another

> quick hack.

Hm, yes that sounds pretty persuading.
> This is because it was not much of an experiment to start with but

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> rather an observation derived from finding a way to record the song

> without so many xruns.

I am aware of that and chose this wording to encourage you to discover

the real root cause. Currently we suffer from hypotheses (at least I

do).
> As such, the observation was quite clear: kernel real-time

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> capabilities, although they might play a role somewhere, had nothing

> to do in producing xruns since switching applications resolved the

> problem.  From that observation then a question arose: there must be a

> bad way and a good way of writing a Linux audio/jack application: what

> is it ?

So did you get the answer?
> > For mathematical reasons I would like to get your result from this

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> > alternative setup (also giving better access to a root cause):

> >=20

> >   3) noise -> jackmix -> Ardour -> wav-file

=20

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> Indeed.  That's the possibility I haven't explored since I think the

> result of the observation was to see that there's a bad and good way of

> writing such applications.

I see, so you are more interested from a philosophical (or moral?) point

of view.
> Now, that the bad way lies with jackmix

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> and/or Qarecord is a second point that has more to do with technical

> performance in the context of writing such an audio/jack application.

> Which is not the case at the moment.

Hm sorry, I didn't get that.
> > Some other interesting information would be, what program versions

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> > (jackmix, QARecord) are you using?

=20

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> Hmmm.. I'd disagree with this insofar as debugging these apps is

> certainly not the matter.

So yes well, but are you sure, you understood my question?
Guido
--=20

http://www.bayernline.de/~gscholz/

http://www.lug-burghausen.org/
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