[Document] Fast real-time migration of virtual machines in cloud computing environment

A fast real-time migration method for virtual machines in cloud computing environment

Ma Fei, Feng, Li Zhui

Aiming at the problem of real time migration time of virtual machine in cloud computing data center, a fast real time migration method of virtual machine is proposed. By formulaic description and performance analysis of the pre copy model, the page bitmap used to mark the changed pages of memory is added in the pre-copy method. During the migration process, the frequently changed memory pages are judged, and the pages that have changed frequently are marked in the new page bitmap and transmitted only in the last iteration. The experimental results show that compared with the traditional method, the modified pre copy method obviously reduces the migration time and achieves the goal of fast migration of virtual machines.

Keywords: cloud computing; virtual machine; real-time migration; pre-copying method

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