Kent A. Reed wrote: > On 8/27/2012 1:00 PM, Michael Haberler wrote: > >> background: I want a non-RTAI HAL environment to try on smaller devices like >> ARM >> > > By the way, have you read > http://lwn.net/images/conf/rtlws11/papers/proc/p11.pdf ? > WOW! I don't see a date on this paper, but the results even with the higher performance ARM processor are not encouraging. Latencies approaching 100 us. They point out a big problem is the cache has to be invalidated on every context switch as it indexes virtual addresses, not physical.
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