Real - Time Scheduling

• Real-time computing is an important emerging discipline in CS and CE.

• Control of lab experiments, robotics, process control, telecommunication etc.

• It is a type of computing where correctness of the computation depends not only on the logical results but also on the time at which the results are produced.

• Hard real-time systems: Must meet deadline. Ex: Space shuttle rendezvous with other space station.

• Soft real-time system: Deadlines are there but not mandatory. Results are discarded if the deadline is not met.

• Hard real-time systems – required to complete a critical task within a guaranteed amount of time
• Soft real-time computing – requires that critical processes receive priority over less fortunate ones