now this gets a bit ridiculous, 8 frames for usb audio buffer size.
gets latency quite low, but easily xrun if playing anything complex in FLStudio.
seems stable/sustainable while there is very little stuff running though.
I like the small deviation in those "distance" numbers (it is how far userspace is from the kernel position in the ringbuffer).
@falktx wow nice hack.
I assume it is dominated by systemic latency. Have you measured that? I expect that total roundtrip latency is an oder of magnitude higher.
@x42 ah got it. but that is what the RTL tool is measuring.
back on Linux I can't run jackd with as low buffer sizes as I can with Windows + ASIO, but 64 frames + 3 periods works fine.
8.2ms with this setup.
The same jackd args on a "real" soundcard (Roland Rubix22) gives me 7.6ms latency.
So it's quite a good result considering the Anagram side runs a full JACK audio graph inside.
@falktx I meant systemic (not system) latency. ie measure with jack-iodelay or similar tool using a cable to connect audio playback to an audio input port of the USB soundcard.