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A Control-Based Middleware Framework for Quality of Service Adaptations (1999)
| Content Provider | CiteSeerX |
|---|---|
| Author | Li, Baochun Nahrstedt, Klara |
| Abstract | 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 application. In this paper, we present a novel Middleware Control Framework to enhance the e#ectiveness of QoS adaptation decisions by dynamic control and reconfiguration of internal parameters and functionalities of a distributed multimedia application. Our objective is to satisfy both system-wide properties (such as fairness among concurrent applications) and application-specific requirements (such as preserving the critical performance criteria). The framework is modeled by the Task Control Model and the Fuzzy Control Model, based on rigorous results from the control theory, and verified by the controllability and adaptivity of a distributed visual tracking application. The results show validation of the framework, i.e., critical application quality parameter can be preserved via controlled adaptation. |
| File Format | |
| Publisher Date | 1999-01-01 |
| Access Restriction | Open |
| Subject Keyword | Controlled Adaptation Qos Adaptation Decision Data Semantics Performance Variation Adaptive Resource Management Mechanism Distributed Visual Tracking Application Critical Application Quality Parameter Rigorous Result Multiple Application Compete Operating System Complex Application Resource Demand Concurrent Application Current Adaptation Mechanism System-wide Property Control-based Middleware Framework Su Er Critical Performance Criterion Control Theory Distributed Multimedia Application Novel Middleware Control Framework Limited Amount System Resource Dynamic Control Heterogeneous Environment Service Adaptation Resource Availability Internal Parameter Application-specific Requirement Task Control Model Application Cannot Preserve Global Property Fuzzy Control Model |
| Content Type | Text |
