Virtual Machine Live Migration Technology Research In Cloud Computing Environment

Under the cloud computing environment, due to the more massive data and node size, cloud computing systems in scalability, scalability, high availability and cost control is faced with more severe challenges. Virtual resource allocation and dynamic adjustment scheme is reasonable to improve cloud resource conservation is an important method of computing performance, application.Study of dynamic management strategy in this paper automatic migration around the virtual machine in cloud computing including virtual machine. For larger scale infrastructure and resources for the problem of automatic management, this paper presents data center automatic resource management model, and the system structure,message passing, key initialization and monitoring machine working process and make the design. At the same time, this paper puts forward the method of dynamic management of virtual machine for multi objective optimization. In the management process, comprehensive consideration of the system to improve customer service quality, reduce resource competition and reduce the power consumption of the target,the virtual machine migration time, the migration of virtual machines and virtual machine migration decision choose the target node. Special and management method will be in the choice of the virtual machine migration to which physical nodes, to the conflict between multiple targets in the equilibrium system, the system uses multi criteria decision analysis approach for selecting the physical node. The experimental results show that to get higher quality of service, load resources less and less power consumption and good balance the conflict between different objects.This paper presents a method of fast and real time migration of virtual machine.By of pre copy algorithm model of formulaic description and performance analysis, in pre copy algorithm to increase marker, frequent changes in memory page page bitmap,tag page migration to the last iteration transmission delay, so as to avoid the memory pages repeated retransmission. Experimental results show that with pre copy method compared to the improved pre copy method obviously reduces the migration time and transfer data, to achieve the purpose of rapid migration of virtual machines.