Key Technologies and Optimization for Dynamic Migration of Virtual Machines in Cloud Computing

Clouds computing, as the latest IT operating model in the Internet Age, is an innovative information system (IS) architecture. Virtualization technology, being the most effective solution to the resource management of cloud computing, excels in its virtual machine real-time migration technology. In order to reduce the migration downtime, Magician optimization migration framework is proposed, based on the analysis of the memory transfer in the real-time migration of current Xen virtual machine. Layered copy module and memory compression module are added to the operation migration module of the typical Xen virtual machine, while layered copy algorithm and memory compression algorithm are also proposed respectively. The test analysis shows that Magician optimizes the time and space complexity of realizing real-time transfer, thus to improve migration performance of the virtual machine.