> The current roadmap is to let Xenomai 3 come in two flavors: one based
> on PREEMPT-RT (Xenomai/Solo), the other (Xenomai/Duo) using Adeos/I-pipe
> and a second scheduler like Xenomai 2 does, but supporting much less
> legacy than the latter (no kernel 2.4, no in-kernel RT applications
> etc.). So depending on your requirements and PREEMPT-RT's progress,
> you'll be able to chose the fitting platform or even switch between them
> without too much effort.
>
> Jan
>
>   
Thanks again Jan.

Another point; for RT USB developers, do you think we could use Linux 
native USB stack with PREEMPT_RT in the same way as Xenomai / USB4RT ?

I'm pleased with this last solution but the USB4RT bug (need to send a 
command twice) is a real problem for performances (i'd like to increase 
my acquisition rate within a fixed cycle). My only approach to real time 
for the moment is USB driver, and in the Open world i cannot find what 
could be the "right" or "best" solution...




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