[PD] knacks at low latency

IOhannes m zmoelnig zmoelnig at iem.kug.ac.at
Wed May 30 18:59:57 CEST 2001

hi all!

what is the lowest possible latency that anyone got under linux ?
with alsa-0.9.0b4 + kernel-2.4.3(+ low latency patch by a.morton) we are
only coming down to
982 samples (which is almost 22.2 ms under 44.1).
this works for "-frags 6"
decreasing the fragsize even more, will produce knacks, unless you
constantly move the mouse inside the pd window (seems like a tool for

what exactly does the "-fragsize <n>" option mean ? anytime we changed
this parameter, it behaved the same (and very badly indeed), meaning
4210 samples of latency and knacksing all the time, no matter which
fragsize we choose.


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