An approach for quality of service adaptation in service-oriented Grids

Rashid J. Al-Ali, Abdelhakim Hafid, Omer Rana, David Walker

Research output: Contribution to journalArticle

41 Citations (Scopus)


Some applications utilizing Grid computing infrastructure require the simultaneous allocation of resources, such as compute servers, networks, memory, disk storage and other specialized resources. Collaborative working and visualization is one example of such applications. In this context, quality of service (QoS) is related to Grid services, and not just to the network connecting these services. With the emerging interest in service-oriented Grids, resources may be advertised and traded as services based on a service level agreement (SLA). Such a SLA must include both general and technical specifications, including pricing policy and properties of the resources required to execute the service, to ensure QoS requirements are satisfied. An approach for QoS adaptation is presented to enable the dynamic adjustment of behavior of an application based on changes in the pre-defined SLA. The approach is particularly useful if workload or network traffic changes in unpredictable ways during an active session.

Original languageEnglish
Pages (from-to)401-412
Number of pages12
JournalConcurrency Computation Practice and Experience
Issue number5
Publication statusPublished - 25 Apr 2004
Externally publishedYes



  • QoS adaptation
  • Quality of service (QoS)
  • Service-oriented grids

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Software
  • Computer Science Applications
  • Computer Networks and Communications
  • Computational Theory and Mathematics

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