Real-time operating system
A real-time operating system (RTOS; commonly pronounced as "are-toss") is a multitasking operating system designed for real-time applications. Such applications include embedded systems, industrial robots, scientific research equipment and others.
Real-time operating systems use specialized scheduling algorithms in order to provide the real-time applications. An RTOS can respond more quickly and/or predictably to an event than other operating systems.
The basic two designs for RTOS are:
- Event-driven (priority scheduling) designs: switch tasks only when an event of higher priority needs service, called pre-emptive priority.
- Time-sharing designs: switch tasks on a clock interrupt, and on events, called round robin.
Examples[change | change source]
These are the best known, most widely used real-time operating systems. See List of real-time operating systems for a full list. Also, see List of operating systems for all types of operating systems.
Related pages[change | change source]
- Operating system
- Rate-monotonic scheduling
- Adaptive Partition Scheduler
- Earliest deadline first scheduling