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Applying a Stochastic Model to a Dynamic, QoS Enabled Web Services Hosting Environment

Lookup NU author(s): Charles Kubicek

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Abstract

Data centres which host Web services for other organisations and users in a Grid environment must provide for Quality of Service (QoS) requirements to be specified to ensure deployed services perform as desired. As services hosted by a data centre receive unpredictable rates of demand, servers must be allocated dynamically to service pools that are over utilised to avoid breaking QoS requirements. This work describes how a cost based stochastic model for resource allocation is used in data centre middleware to balance server utilisation, and how the model was used to enable a data centre to meet QoS requirements. The stochastic QoS model is compared to two other QoS models and is shown to be the most effective in a number of experiments. © 2006 Elsevier B.V. All rights reserved.


Publication metadata

Author(s): Kubicek C

Publication type: Article

Publication status: Published

Journal: Electronic Notes in Theoretical Computer Science

Year: 2006

Volume: 151

Issue: 3

Pages: 77-95

ISSN (print): 1571-0661

ISSN (electronic):

Publisher: Elsevier BV

URL: http://dx.doi.org/10.1016/j.entcs.2006.03.013

DOI: 10.1016/j.entcs.2006.03.013

Notes: Proceedings of the Second International Workshop on the Practical Application of Stochastic Modeling (PASM 2005)


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