Hi, On Tuesday, December 17, 2013 12:43:37 PM UTC+2, [email protected] wrote: > > > To summarize I have seen that on the BBB it is available the QNX, that it > is a Real Time capable OS: > > > http://community.qnx.com/sf/wiki/do/viewPage/projects.bsp/wiki/TiAm335Beaglebone > > the alternative is install a kernel patch for RT: Xenomai or PREEMPT-RT > > which solution would you suggest and why? > > > Well the question is what you want to do with it;)
If you need real time without Linux you should use an RTOS without Linux. If you need Linux plus real-time you could use Hardware+Linux (like PRU or additional hardware) or Software+Linux. Real-time in not about being fast, but about being deterministic. You could try to get Xenomai and Preempt-RT running on your board and compare latencies,jitter,... You can get an initial rough idea if you run cyclictest with a vanilla and Preempt-RT Linux and compare against the one which comes with Xenomai on a Xenomai kernel. Then it would be best to come up with a testcase which shows what you want and to run it with the various solutions. Regards, Robert -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
