dambacher-retrofit.de wrote: > Hi Jon > > I wonder if the emc realtime compartibility layer can be adapted to native > linux > realtime using rt_preemt. Maybe this is a solution for future support of non > x86 > emc RT-preempt is conceivably good enough for some servo systems, it is guaranteed never to be good enough for software step generation. I have seen numbers indicating that modern (2 GHz or so) CPUs could reliably get jitter down to tens of us on some motherboards, with a fair bit of effort. Just look on the rt-preempt HOWTO site and they show the demo with 86 us worst-case jitter on the highest priority task. (This assumes I am reading the chart correctly.) Most systems that work at all with RTAI have jitter in the range of 10 us.
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