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Mobile Information Systems
Volume 2016, Article ID 4859862, 9 pages
http://dx.doi.org/10.1155/2016/4859862
Research Article

Power-Aware Resource Reconfiguration Using Genetic Algorithm in Cloud Computing

Li Deng,1,2 Yang Li,1,2 Li Yao,1,2 Yu Jin,1,2 and Jinguang Gu1,2

1College of Computer Science and Technology, Wuhan University of Science and Technology, Wuhan 430065, China
2Hubei Province Key Laboratory of Intelligent Information Processing and Real-Time Industrial System, Wuhan, China

Received 23 September 2016; Accepted 12 December 2016

Academic Editor: Qingchen Zhang

Copyright © 2016 Li Deng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Cloud computing enables scalable computation based on virtualization technology. However, current resource reallocation solution seldom considers the stability of virtual machine (VM) placement pattern. Varied workloads of applications would lead to frequent resource reconfiguration requirements due to repeated appearance of hot nodes. In this paper, several algorithms for VM placement (multiobjective genetic algorithm (MOGA), power-aware multiobjective genetic algorithm (pMOGA), and enhanced power-aware multiobjective genetic algorithm (EpMOGA)) are presented to improve stability of VM placement pattern with less migration overhead. The energy consumption is also considered. A type-matching controller is designed to improve evolution process. Nondominated sorting genetic algorithm II (NSGAII) is used to select new generations during evolution process. Our simulation results demonstrate that these algorithms all provide resource reallocation solutions with long stabilization time of nodes. pMOGA and EpMOGA also better balance the relationship of stabilization and energy efficiency by adding number of active nodes as one of optimal objectives. Type-matching controller makes EpMOGA superior to pMOGA.