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>RTLinux or FreeRTOS are guaranteed-latency OS, that can reduce timing jitter.

Unlike seL4[0], neither OS has a guarantee of worst case latency.

RTLinux cannot realistically have one, as formal verification is not feasible due to its sheer size.

0. https://sel4.systems/





RTLinux had many variants, but in general nobody wants to introduce chaotic processes while running previously profiled runtime code.

It was odd xenomai was not as common as preemt_rt in projects. =3




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