Hi guys,
BTW: How did you measure this on Windows? And on Linux? What kernel and jack versions? PureDyne is far from an up-to-date distro, as far as I know.
50ms is a hell of a big latency for playing live, or recording with monitoring and other kind of user cases. But it all depends of what you want to do... :-)
I get 4ms here (ThinkPad laptop / intel i7 / ArchLinux), but higher the latency less changes of xruns. So if I don't really need this short latency I can set a little higher to ensure no xruns.
The word is that kernel 2.6.39 will have most of the rt patch features, so things seems to improve very fast.