Real-Time Systems

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Commercial Real-Time Operating Systems

In the last three chapters we discussed the important real-time task scheduling techniques. We highlighted that timely production of results in accordance with a physical clock is vital to the satisfactory operation of a real-time system. We had also pointed out that real-time operating systems are primarily responsible for ensuring that every real-time task meets its timeliness requirements. A real-time operating system, in turn, achieves this by using appropriate task scheduling techniques. Normally, real-time operating systems provide flexibility to the programmers to select an appropriate scheduling policy among several supported policies. Deployment of an appropriate task scheduling technique out ...