An eco algorithm for dynamic migration of virtual machines in a server cluster

Abstract

Electric energy consumed in server clusters has to be reduced. In our previous studies, the dynamic virtual machine migration (DVMM) algorithm is proposed to reduce the total electric energy consumption of servers. In this paper, we improve the DVMM algorithm to furthermore reduce the electric energy consumption. If an application issues a process to a cluster, a most energy-efficient host server is first selected and the process is performed on a virtual machine on the server. Then, a virtual machine migrates from a host server to a more energy-efficient guest server. In the evaluation, we show not only the total electric energy consumption and active time of servers but also the average execution time of processes can be reduced in the DVMM algorithm compared with other algorithms.