Abstract
Cloud computing is concept of computing technology in which user uses remote server for maintain their data and application. Resources in cloud computing are demand driven utilized in forms of virtual machines to facilitate the execution of complicated tasks. Virtual machine placement is the process of mapping virtual machines to physical machines. This is an active research topic and different strategies have been adopted in literature for this problem. In this paper, the problem of virtual machine placement is formulated as a multiobjective optimization problem aiming to simultaneously optimize total processing resource wastage and total memory resource wastage. After that ant colony optimization algorithm is proposed for solving the formulated problem. The main goal of the proposed algorithm is to search the solution space more efficiently and obtain a set of non-dominated solutions called the Pareto set. The proposed algorithm has been compared with the well-known algorithms for virtual machine placement problem existing in the literature. The comparison results elucidate that the proposed algorithm is more efficient and significantly outperforms the compared methods on the basis of CPU resource wastage and memory resource wastage.