Abstract

In Cloud Systems it usually the case that there exists a multi-tenancy of Cloud Service Customers meaning that some Cloud Service Customers applications share the same Cloud infrastructure. In this situation there must exist a Service Level Agreement (SLA) contract between the Multi-Tenant Cloud Service Provider (MTCSP) and the Cloud Service Customers (CSCs). In this article we discuss about the parameters of an SLA in the Cloud and we particularize it in the case of multi-tenancy. We analyze and implement two algorithms with the purpose of optimizing the scheduling of tasks from the tenants of the Multi-Tenant Cloud Service. The results show that the algorithms can be used in different situations with good results.

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