A Combined Study of Control Scheduling and Online Adaptive System for Fault Tolerance in Multiprocessor Real Time Systems

The recent emergence of multiple processors and related technologies in many commercial systems has increased the prevalence and the development of multiprocessor architecture. Contemporarily, real-time applications have become more complex and sophisticated in their behaviour and interaction. Inevitably, these complex real-time applications will be deployed upon these multiprocessor platforms and require different analysis techniques to verify their correctness and also their efficiency in terms of different metrics. During the past, the development of real time scheduling algorithm is enhancing and the use of Feedback Control Scheduling Algorithm (FCSA) in the control scheduling co-design of multiprocessor real -time system has also increased. FCSA provides Quality of Service (QoS) in terms of overall system performance and resource allocation in open and unpredictable environment. FCSA uses quality control feedback loop to keep CPU utilization under desired unitization bound by avoiding overloading and deadline miss ratio.