Network-aware meta-scheduling in advance with autonomous self-tuning system
Future Generation Computer Systems
EGC'05 Proceedings of the 2005 European conference on Advances in Grid Computing
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Quality of Service (QoS) in Grid computing is a research hot topic nowadays. It is empowered by the interest on Service Level Agreements (SLAs) due to the need of mechanisms to guarantee the QoS. SLAs represent contracts established by negotiation between users and service providers that must be accomplished. They contain the terms related to the expected QoS, which are usually very varied and numerous. In order to improve the evaluation of the agreements, it is necessary to characterize and classify these terms, resulting in a differentiation of QoS in levels. The aim of this paper is to address the differentiation of QoS for users in Grid environments by using specific metrics on SLAs, by proposing a framework to negotiate SLAs between users and Grid service providers, where the QoS expected by users is clearly defined in three levels. This levels are used to classify the importance of each SLA and deal with the confidence that Grid resources can provide.