Resource partition for real-time systems

We investigate an approach to implement the open system environment idea by means of temporal resource partitions. In this approach, application task groups with hard timing constraints may share the same physical resource and yet be free from the interference of one another. Each resource partition uses only a fraction of the time on the resource. Partitions are specified by two models, a static partition model and a bounded-delay partition model. Both models achieve a clean separation of concerns between task group level scheduling and resource level partition scheduling. The schedulability problems for both preemptive fixed priority and dynamic priority scheduling policies are analyzed.