[LAD] automation on Linux (modular approach)

[Philipp]

Excerpts from fons's message of 2010-03-25 00:47:08 +0100:
> (forgot to copy this to LAD)
> 
> On Wed, Mar 24, 2010 at 06:45:00PM -0400, Paul Davis wrote:
> > On Wed, Mar 24, 2010 at 5:59 PM,  <fons at kokkinizita.net> wrote:
> > 
> > > When connected via a loopback on a HW interface
> > > I expected the worst case to be events quantised
> > > to Jack period (256 frames). Actually it's 10 times
> > 
> > what bridge were you usng between JACK and ALSA?
> 
> It was -X raw. I just repeated the test with -X seq
> and that provides a completely different picture.
> 
> Jitter is +/- 2 frames, with occasional outliers
> at around 160 frames, nothing in between.
> That is with a 30-track Ardour session running in
> the background, DSP load 15%, CPU load 27%.
> Unpatched 2.6.32 kernel (which may explain the
> occasional larger error).
> 
> Not bad at all.
> 
> Ciao,

Very strange, -Xraw is said to perform better than -Xseq.
Maybe there's a difference between outboard and software?

In software land jack midi is the clear winner, -Xraw is said to perform
better than -Xseq, so if it's different for outboard gear, where does
the difference come from?