A distributed system reference architecture for adaptive QoS and resource management

Autor: Philip M. Irey, Paul V. Werme, Leslie A. Madden, Lonnie R. Welch, Michael W. Masters, David T. Marlow, Behrooz Shirazi
Rok vydání: 1999
Předmět:
Zdroj: Lecture Notes in Computer Science ISBN: 9783540658313
IPPS/SPDP Workshops
DOI: 10.1007/bfb0098011
Popis: This paper deals with large, distributed real-time systems that have execution times and resource utilizations which cannot be characterized a priori. (The motivation for our work is provided in part by the characteristics of combat systems.) There are several implications of these characteristics: 1) demand space workload characterizations may need to be determined a posteriori, and 2) an adaptive approach to resource allocation may be necessary to accommodate dynamic workload changes. Thus, we present a scheme for dynamically managing distributed computing resources by continuously computing and assessing QoS and resource utilization metrics that are determined a posteriori. Specifically, the paper presents an adaptive distributed system reference architecture that is suitable for such an approach. This reference architecture provides the capabilities and infrastructure needed to construct multi-component, replicated, distributed object real-time systems that negotiate for a given level of QoS from the underlying distributed computing resources.
Databáze: OpenAIRE