Research on virtual machine dynamic migration strategy based on Xen

Research on virtual machine dynamic migration strategy based on Xen

Liaoning University Zhang Pu

In this paper, a dynamic migration strategy based on Xen virtual machine is proposed for the Xen platform environment, combining the actual application scenario and the Xen bottom migration. The specific work is as follows: first, in order to carry out virtual machine migration in the cloud computing environment, Xen Migration uses a comparison between passing the page bitmap and skipping the page bitmap to determine whether the memory page is retransmission. A memory optimization algorithm based on AR model is proposed for the comparison of page bitmap, which can be used to predict the next modification time of the memory page according to all modified intervals of the recorded memory page, and retransmission when the next modification time is greater than a certain threshold value. The memory optimization algorithm shortens the time of virtual machine migration and reduces the network overhead of virtual machine migration. Secondly, on the basis of AR model, we analyze and deal with the reduction of the time of migration while reducing the service quality. In view of the lack of the bandwidth of the network bandwidth maximization in the Rate_is_save mode, the adaptive optimization of the original mode, the network bandwidth improvement strategy based on the exponential smoothing algorithm, the reasonable prediction of the service reservation bandwidth based on the dirty page generation rate in the iterative process, and the allocation of the remaining bandwidth to the migration, Effectively shorten the migration time and ensure the quality of business when migrating. Finally, through the memory optimization algorithm based on AR model, the network bandwidth allocation strategy based on exponential smoothing algorithm and the data collection of the two kinds of application types, the performance indexes of migration time, downtime time and service quality are analyzed.

Research on virtual machine dynamic migration strategy based on Xen