A control-based middleware framework for quality-of-service adaptations

| In heterogeneous environments with performance variations present, multiple applications compete and share a limited amount of system resources, and su er from variations in resource availability. These complex applications are desired to adapt themselves and to adjust their resource demands dynamically. On one hand, current adaptation mechanisms built within an application cannot preserve global properties such as fairness; on the other hand, adaptive resource management mechanisms built within the operating system are not aware of data semantics in the ap-