Abstract

In this paper, we propose an algorithm to migrate virtual machines to reduce the total electric energy consumption of servers. Here, virtual machines are dynamically resumed and suspended so that the number of processes on each virtual machine can be kept fewer. In addition, multiple virtual machines migrate from a host server to a more energy-efficient guest server. In our previous studies, time to migrate virtual machines is assumed to be zero. The more often a virtual machine migrates, the longer time it takes to perform processes on the virtual machine. We propose a model to estimate the electric energy consumption of servers by considering the migration time of each virtual machine. By using the model, virtual machines to migrate and to perform processes are selected so that the total electric energy consumption can be reduced. In the evaluation, we show the total electric energy consumption of servers can be reduced compared with other algorithms.

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