Adaptive control based dynamic Real-time resource management

In open, largely unpredictable environments, Quality of service (QoS) has recently become an important focus for real-time research. The cost of performing such measurements is a significant hurdle to the wide-spread deployment of open QoS-aware software components. In this paper, we describe the design and implementation of Adaptive Control middleware, a middleware QoS-control architecture based on Adaptive control theory, motivated by the needs of performance-assured distributed application. It uses adaptive behavior to meet timeliness requirements in the face of restrictions in processing power and network bandwidth. This paper gives an overview of our implementation on a Real-time CORBA platform.