Analytical Evaluation of an Innovative Decision-making Algorithm for VM Live Migration

In order to achieve the virtual machine live migration, the two "pre-copy" and "post-copy" strategies are presented. Each one of these strategies, depending on the operating conditions of the machine, may perform better than the other. In this article, a new algorithm is presented that automatically decides how the virtual machine live migration takes place. In this approach, the virtual machine memory is considered as an informational object that has a revision number and it is constantly changing. We determine the precise criteria for evaluating the behavior of a virtual machine and automatically select the appropriate live migration strategy. Also different aspects of the required simulations and implementations are considered. Analytical evaluation shows that using the proposed scheme and the presented algorithm can significantly improve the virtual machine live migration process.