2017-02-17 12:47 GMT+01:00 Mariusz Janiak <mariuszjan...@wp.pl>: > Dnia Piątek, 17 Lutego 2017 12:19 Norbert Lange <nolang...@gmail.com> > napisał(a) > *snip* > > Maybe author of the RTnet stack can give better answer, but in my opinion, in > the case of the hard RT communication, we have to know in advance what is the > maximum packet delivery time. The RTnet guarantee fixed time packet delivery. > There is always a trad off between bandwidth and latency, you can't have both.
Sure, but there is also "low latency" and "guaranteed latency", the later is affected and hard to prove if you can`t bound eg. the IRQs to a specific maximum. Hmm, probably an issue though, as the RtNet Protocol wants to synchronize clocks as well. We have synchronized clocks via a dedicated PPS wire, so we wouldn`t need that. Using PTP Hardware could probably fix that. > >> No efforts in using something similar to "New API"? (who comes up with >> such names...) > > I remember a discussion about NAPI in context of RTnet stack, but I don't > know if any attempts have been made. Ok, any way to search the mailing list, havent found any? > *snip* > > Unfortunately I can't help. No prob. Kind regards, Norbert _______________________________________________ Xenomai mailing list Xenomai@xenomai.org https://xenomai.org/mailman/listinfo/xenomai
