Dear list.
I found several threads regarding latency, but none of them answered my question:
I did this: Play audio data from a JACK client (in my case Audacity), loop it through a pd-patch (which is just a short-circuit), and then record it again (also with Audacity).
In all cases that I tried, the recorded signal had a delay of 2 JACK blocks ("periods") plus 64 samples. I tried the -blocksize and -audiobuf options, but they didn't seem to change anything. I read about the -frags and -fragsize options, but they didn't seem to exist in my pd version (I tried both pd-extended 0.40.3 and pd vanilla 0.41.4 from Debian "Squeeze").
When I do the same thing with other JACK clients, I get the expected and desired 1 block of delay.
I know, that less than one block of delay is impossible, but is it possible to reduce pd's latency to one JACK block?
cheers, Matthias