An analytical approach to providing controllable differentiated quality of service in Web servers
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Date
2005-11-30
Authors
Rashid, MM
Alfa, AS
Hossain, E
Maheswaran, M
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Abstract
Provisioning quality of service (QoS) in Web servers has gained immense importance because Web servers are a major part of the Internet. To deliver the pledged QoS, Web service providers need control over the allocation of the resources in their Web servers. Control is also necessary for reaching the optimal resource allocation through proper service differentiation. In this paper, we propose and investigate an analytic approach that enables the service providers to deploy a differentiated service policy that offers this control. The proposed service policy is configurable by tunable control parameters. We devise the relationships between the performance measures and these parameters by adopting a unique queuing theoretic approach. Once these relationships are established, we describe how these parameters can be set to their most appropriate values depending on the objectives of the service providers. We illustrate the usefulness of our approach by conducting the analysis on a real Web trace.
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Keywords
Web servers, quality of service, threshold-based, multiclass, matrix-geometric method
Citation
1045-9219; IEEE TRANS PARALL DISTRIB SYS, NOV 2005, vol. 16, no. 11, p.1022 to 1033.