Ensuring Cloud Service Guarantees via Service Level Agreement (SLA)-Based Resource Allocation

This paper studies the problem of resource management and placement for high performance clouds. It is concerned with the three most important performance metrics: response time, throughput, and utilization as Quality of Service (QoS) metrics defined in a Service Level Agreement (SLA). We propose SLA-based approaches for resource management in clouds. Specifically, we first quantify the metrics of trustworthiness, a percentile of response time, and availability. Then, this paper provides the formulation of cloud resource management as a nonlinear optimization problem subject to SLA requirements and further gives the solution of the problem. Finally, we give a solution of this nonlinear optimization problem and demonstrate the effectiveness of proposed solutions through illustrative examples.