Quote Originally Posted by for View Post
I beg your pardon. There are three different linux rt patch sets, yet none of these is fully incorporated in the mainline, even though one of them has been selected to be there over 10 years ago. There are reasons why enforcing realtime regime on general purpose OS designed to run on general purpose CPU is so challenging. I'm not questioning what you wrote about advantages and so on. But I guess I can achieve the very same set of functionalities (that I'm interested in) enforcing clear hardware distinction between rt domain and the rest with less effort required.
Nope, that's just silly FUD

LinuxCNC (and now Machinekit) have been working well on Linux RTOS's for more than 15 years

Also Preempt-RT will be mainlined soon (not that that is a real issue)