Migration Control in Cloud Computing to Reduce the SLA Violation

The requisition of cloud based services are more eminent because of the enormous benefits of cloud such as pay-as-you-use flexibility,scalability and low upfront cost. Day-by-day due to growing number of cloud consumers the load on the datacenters is also increasing. Various load distribution and dynamic load balancing approaches are being followed in the datacenters to optimize the resource utilization so that the performance may be maintained during the increased load. Virtual machine (VM) migration is primarily used to implement dynamic load balancing in the datacenters. But, the poorly designed dynamic VM migration policies may negate its benefits. The VM migration overheads result in the violations of service level agreement (SLA) in the cloud environment.In this paper,an extended VM migration control model is proposedto minimize the SLA violations while controlling the energy consumption of the datacenter during VM migration. The parameters of execution boundary threshold is used to extend an existing VM migration control model. The proposed model is tested through extensive simulations using CloudSim toolkit by executing real world workload. Results are obtained in terms of number of SLA violations while controlling the energy consumption in the datacenter. Results show that the proposed modelachieves better performance in comparison to the existing model