Research On The VM Migration Queue In Data Center Using Software Defined Network

With the development of cloud computing and software defined network,virtualization has become the basic technology of data center,which can effectively reduce operating costs,maximize resource utilization,improve performance and reliability.Virtual machine migration is one of the most important functions of data center,which can effectively balance the workload of each infrastructure to meet the performance requirements.Virtual machine resource management more dependent on this feature,when there is a large number of simultaneous migration of virtual machine,optimal allocation of resources.In this dissertation,we study the data center virtual machine integration algorithm and the data center virtual machine migration sequence in the software defined network.In this dissertation,a data center resource management algorithm is proposed to dynamically integrate and manage data center servers.The algorithm takes into account the resource constraints,resource utilization,communication costs,and virtual machine migration cost.Based on these constraints,the resource integration management of data center is realized.In this dissertation,the problem is divided into two sub problems:Virtual Machine Consolidation host Selection Problem(VMCSP)and Virtual Machine Consolidation virtual machine Replacement Problem(VMCRP).VMCSP uses constraint programming to compute the smallest server to place all virtual machines in the data center.VMCRP virtual machine migration cost,by considering the continuity constraint and cyclic constraints,calculate each virtual server to confidential.DCRCA to achieve the dynamic management of the data center,you can release or close some of the data center is running at the current stage but not the server.In order to reduce the total time of virtual machine migration and impact on service performance,a heuristic algorithm based on cost evaluation is proposed in this paper.The proposed algorithm considers both the residual bandwidth of the network and migration time in every step of the virtual machine migration.And through organic combination of parallel algorithm and heuristic algorithm,it solves migration sequence problem of numerous virtual machines in Software Defined Network.The algorithm reduces the total migration time of the virtual machine while ensuring the security,dependence and performance requirements.As to compare with the greedy algorithm,experiments show that the algorithm can reduce the total migration time of the virtual machine by up to 52.1%.As to compare with Heuristic algorithm and CQNCR algorithm to reduce the total time of virtual machine migration were 42%and 23.8%,improve the migration performance,ensure the quality of service.