How do Real Time Operating Systems work?

Question

I mean how and why are realtime OSes able to meet deadlines without ever missing them? Or is this just a myth (that they do not miss deadlines)? How are they different from any

Answer 1

In RTOSes the most critical parameters which should be taken care of are lower latencies and time determinism. Which it pleasantly does by following certain policies and tricks.

Whereas in GPOSes, along with acceptable latencies the critical parameters is high throughput. you cannot count on GPOS for time determinism.

RTOSes have tasks which are much lighter than processes/threads in GPOS.