[LAD] MIDI jitter

[Ralf Mardorf]

On Tue, 2010-07-06 at 10:25 -0400, Paul Davis wrote:
> On Tue, Jul 6, 2010 at 8:06 AM, Ralf Mardorf <ralf.mardorf at alice-dsl.net> wrote:
> > I've got a good feeling, that around 1ms (when the -R switch is set)
> > would be good enough to make music, but again, even if the test says
> > 2.23 ms for the USB device should be great, the USB device is unusable
> > for serious musicians, it results in music that might be done by am
> > idiot without any sense for music.
> 
> you write this as though its some kind of surprise.

Yes, I guess the PCI MIDI is good enough for my needs, but until I
didn't tested it by making music I'm sceptic. And I'm sceptic about 2.23
ms for USB too, anyway the PCI card is always around 1.1 ms, with or
without HPET, with glxgears and moving windows or without. The main
thing for me is that PCI has half of the USB latency for the test, if
this is a real value when JACK is running etc. is less important, as
long the factor between USB and PCI will be 2, 'half as much'. :)

I be hopeful that this issue for my machine is solved now, but until I
didn't recorded some music, I don't believe that it's solved and yes, I
was surprised even if by theory I shouldn't be surprised regarding to
the measured results.

- Ralf