this is still
pretty long, and as you note, pd is not subject to
per-period time limits with this configuration. it can take too long
on up to 26 of 27 periods before there is an xrun.
Hmm, this is quite interesting. With a period size of 64 frames,
you'd get quite a lot of context switches with jackd. Kjetil, does
your ipc-lib make the context switches this often?