System Resource Management for Distributed Real-Time Systems

摘要

The overall goal of the SRM effort is to develop techniques for coordinated butdecentralized control of system resources in distributed systems. These techniques will provide integrated management of: (1) multiple system resources, including the processing, communication, and data storage components of the system; (2) multiple system objectives (i.e., level-of-service preferences), such as timeliness, precision, and correctness; (3) multiple activities (e.g., applications or tasks) competing for resources; (4) multiple nodes in a distributed system; and (5) multiple techniques and mechanisms for meeting objectives. The resource management system will allocate distributed system resources to multiple competing activities in such a way that objectives as a whole can be satisfied to the highest degree possible. The goals of the research for this effort were to: (1) develop abstractions that model common system objectives such as performance, functionality, availability, precision, and security; (2) develop abstractions that model system components (e.g., processing, communication, and storage subsystems) and higher level services that are based on these components (e.g., distributed database systems or distributed file systems); (3) develop abstractions and mechanisms that provide integrated control across the objectives and components of a distributed system; and (4) show the validity of the abstractions by applying them to one or more sample scenarios and implementing a proof-of-concept demonstration application.