SLA-based virtualized resource allocation for multi-tier web application in cloud simulation environment

Virtualized resource allocation for multi-tier web applications in cloud environment brings new challenges to cloud infrastructure providers. In order to meet the constraint of SLA and allocate the available virtualized resources optimally, this paper proposes a resource allocation algorithm for infrastructure providers who want to minimize infrastructure cost and SLA violations. Our proposed algorithm can maximize the overall profit of cloud infrastructure providers when SLA guarantees are satisfied or violated in a dynamic resource sharing cloud environment. The experimental evaluation with a EUCALYPTUS-based cloud and a realistic workload, and the comparison with the existing algorithm demonstrate the feasibility of the algorithm and allow a cost effective usage of resources in cloud simulation environment.