I’ve a project started with ardour-7.1.*. A some point I started hearing some gliches, like xrun but they are not (nor for ardour or jack). jack log flooded by errors like:
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 512
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 512
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 768
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 1024
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 768
With another session, created with ardour-6.9:
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 2816
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 4096
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 4096
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 3840
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 3840
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 3584
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 3328
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 3328
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 3072
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 2816
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 2816
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 2560
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 2304
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 2304
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 2048
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 1792
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 1792
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 1536
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 1536
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 1280
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 1024
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 768
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 768
Jack: JackAlsaDriver::Read warning fBufferSize = 256 nframes = 512
but in this case, errors stopped after loading finished and no audio glich.
I never saw this kind of error with ardour 6.*
Tested with ardour-7.2 official and from openSUSE Proaudio repo.