Hierarchical Scheduling for Real-Time Distributed Systems Integrating a Validation Resource and a Performance Metric

The approximation followed here represents a Distributed Real-Time System (DRTS) as a layered model with a real-time scheduler, based on hierarchical scheduling composition, thus providing the DRTS with larger integrity and flexibility. The utilization of a metric is proposed in order to determine the overall system performance, therefore helping with the design and configuration decisions.