Title :
Quality events: a flexible mechanism for quality of service management
Author :
West, Richard ; Schwan, Karsten
Author_Institution :
Dept. of Comput. Sci., Boston Univ., MA, USA
Abstract :
The paper describes a software mechanism, called quality events, that utilizes application- and/or system-level service extensions to provide quality of service (QoS) guarantees to end users. Such extensions offer flexibility in: (1) how application- and/or system-level services are dynamically managed to maintain required quality, (2) when such management occurs, and (3) where this service management is performed. Several adaptive QoS management strategies are implemented with quality events and compared with respect to their ability to meet application-specific QoS requirements. These management strategies have different service adaptation latencies, and different degrees of coordination between services. Significant performance variations observed for these alternative strategies demonstrate the importance of a flexible QoS management mechanism like quality events. Finally, we show that adaptive QoS, and hence resource management strategies can lead to more efficient use of resources, and better qualities of service for certain applications than non-adaptive resource management methods
Keywords :
quality management; quality of service; resource allocation; software quality; systems analysis; adaptive QoS management strategies; alternative strategies; application-specific QoS requirements; end users; flexible QoS management mechanism; flexible mechanism; management strategies; non-adaptive resource management methods; performance variations; quality events; quality of service guarantees; quality of service management; resource management strategies; service adaptation latencies; service management; software mechanism; system-level service extensions; system-level services; Availability; Computer science; Delay; Educational institutions; Monitoring; Quality management; Quality of service; Resource management; Runtime; Software quality;
Conference_Titel :
Real-Time Technology and Applications Symposium, 2001. Proceedings. Seventh IEEE
Conference_Location :
Taipei
Print_ISBN :
0-7695-1134-1
DOI :
10.1109/RTTAS.2001.929869