移动云计算中一种虚拟机迁移的预拷贝传输策略研究

Improved pre-copy transmission strategy in mobile cloud computing

针对移动云计算中虚拟机迁移过程的性能优化问题,提出了一种基于最优停止理论的预拷贝传输策略。该策略通过最优停止理论对寻找最优传输速率的最优停止模型求解,从而获得最优传输速率,由此来减少虚拟机迁移过程中的迁移数据总量和总时间。在仿真实验中,将所提出的传输策略与相关文献的传输策略进行对比,给出不同传输策略的性能结果分析。实验结果表明,所提出的策略具有较少的迁移数据总量和总时间,能有效地提高迁移过程的性能。

Aiming at the performance optimization problem of the virtual machine migration process in mobile cloud computing,this paper proposed a pre-copy transmission strategy based on the optimal stopping theory.The strategy solved the optimal stopping model which looked for the optimal transmission rate with the optimal stopping theory,to obtain the optimal transmission rate.So that it resulted in the reduction of the total amount of migration data and the total time in the virtual machine migration process.In the simulation experiment,this paper compared the proposed transmission strategy with the referenced transmission strategies,and analyzed the performance of different transmission strategies.The experimental results show that the proposed strategy get less total amount of migration data and total time,and can effectively improve the performance of the migration process.