ENERGY EFFICIENT AND INTERFERENCE AWARE PROVISIONING IN VIRTUALIZED SERVER CLUSTER ENVIRONMENT

IT service providers employ server virtualization as a main building block to improve system utilization, improve system manageability and reduce operational costs which includes energy consumption driving economies of scale with shared resources. Virtualization enables co-locating and efficient assignments of virtual servers within the bounds of limited number of heterogeneous physical servers, with Virtual Machines (VM) sharing the limited physical server resources between them. Though virtualization technologies point to the fact that each virtual server has its very own isolated environment, but in reality, perfect isolation is not possible. The primary measure to achieve assignment efficiency is to ensure that system resources are utilized effectively and the performance of VM is consistent within the desired bounds. Interference or contention on the limited shared resources among VMs leads to performance degradation and is referred to as performance interference. In this work, the researchers analyze the performance degradation using energy efficiency heterogeneity measure and interference aware measure, with the aim to reduce energy consumption in the environment.