On Fri, 19 Sep 2014 20:58:58 +0000 Fons Adriaensen <f...@linuxaudio.org> wrote:
> On Fri, Sep 19, 2014 at 09:44:44PM +0100, Will Godfrey wrote: > > > Just trying to get a clearer understand so hope these aren't too noob-ish. > > > > If you have several processes wanting to send audio, does the callback go > > to all > > of them at (essentially) the same time, or does Jack poll them? > > > > If the former, is it the quickest to complete that gets processed first? > > > > If the latter, does Jack maintain the same order (assuming none stop) or > > might > > it change between buffers? > > Jack (all versions) will call the client calbacks in an order > that depends only on their connections, i.e. on the way each > client depends on input from any others. > > The difference between Jack 1 and 2 is that Jack2 may call > clients in parallel on an SMP machine *if the dependencies > allow this*, while Jack1 will not do this. > > > I've a few more questions but they depend on whether either of these > > scenarios is correct! > > Just ask. But be assured that Jack does the right thing > whatever. Thanks Fons. This is rather as I suspected. Now... Assuming buffer size and sample rate give 10.7 mS overall. Do the clients know when in the time frame they are actually called? Say we have A, B & C in that order and B&C each take 3mS to return but A takes 6mS. Does C get booted out even though it was A that was the time hog? > Ciao, (*) > > (*) Back in Parma for the WE. When I return to Muenchen > it will be 'Tschuss' instead. :) -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song. _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev