Selon aym3ric stm-sq@bleu255.com:
now i know why you all get so damned good latencies. i guess the numbers are plain wrong when you refer to pd.
start to be confusing again :) if those values are wrong, what is the latency info in qjackctl is supposed to represent ? How can i measure the "real" latency within pd ? (i remember an out->in cable test patch posted a long time ago)
play an electric or an electronic instrument through Pd, you may see very well if there's too much latency
I get a latency of 2.9 ms for Jack, and therefore this is the latency of the system when no audio program runs Under Pd the latency should of course be a bit higher, but still unperceptible (that was not the case under Windows XP)