Quoting Dan Capp <reflectremain(a)gmail.com>om>:
1) I watched in envy as you ran A2J and plugins,
alongside Ardour, and that
xrun counter stayed green. When I try and do the same, I get one-off xruns
upon A2J command and then again when trying to load plugins.
What CPU do you have (grep "model name" /proc/cpuinfo)?
Have you made the limits.conf hack to enable realtime and are you
running jack in realtime (with say -P70)?
Are you running jack with über-low latency; what's the frames/period setting?