Virtual machine migration algorithms to reduce electric energy consumption of a server cluster

Abstract

In this paper, we discuss a virtual machine migration approach to reducing the electric energy consumption of servers. In our previous algorithms, one virtual machine migrates from a host server to a guest server. While the electric energy consumption of servers can be reduced by migrating some number b of processes, there might not be a virtual machine with the same number b of processes on a host server. In this paper, we propose an ISEAM2T algorithm where multiple virtual machines can migrate from a host server to a guest server. Here, multiple virtual machines on a host server are selected so that the total number of processes on the virtual machines can be more easily adjusted to the best number b of processes. In the evaluation, we show the total electric energy consumption and active time of the servers and the average execution time of processes can be reduced in the proposed algorithm.