[PD] knacks at low latency

Johannes M Zmoelnig zmoelnig at iem.kug.ac.at
Thu May 31 18:47:50 CEST 2001

maybe it would be of general interest, that we are using a
rme-96 PST (or was it PSD, stup abbr) interface (that's the one with
8-tdat-I/O + 2 analog I/O + spdif I/O)


On Wed, 30 May 2001, IOhannes m zmoelnig wrote:

> 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
> live-gigs...)
> 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.
> mfg.sd.asdf
> IOhannes

More information about the Pd-list mailing list