摘要
针对云计算环境下数据中心多虚拟机并行迁移性能问题,提出了一种云数据中心多虚拟机并行迁移带宽重分配策略。从理论上推导出了并行迁移带宽重分配方案,通过分析不同带宽分配方案对迁移性能的影响,采用拉格朗日乘数法求解优化的带宽重分配方案。通过对多虚拟机并行迁移过程的模拟,实验结果分析表明,采用带宽重分配策略进行多虚拟机并行迁移能够显著改善多虚拟机并行迁移的性能,更好地满足云数据中心绿色节能、系统维护和故障恢复的实际需求。
For the problem of multiple virtual machines parallel migration performance, this paper proposed a bandwidth reallocation strategy for parallel migration of multiple virtual machines in the cloud data center. It reduced theoretically all possible schemes of the reallocation bandwidth for multiple virtual machines and then applied Lagrange multiplier method to pick up the optimization scheme by analyzing the impact of the different schemes on the overall migration performance. Through the simulation of parallel virtual machine migration process, the experiment results show the bandwidth reallocation strategy improves the performance of muhiple virtual machines parallel migration to satisfy the requirement of green energy, system maintenance and fault recovery in the cloud data center.
出处
《计算机应用研究》
CSCD
北大核心
2015年第11期3408-3412,共5页
Application Research of Computers
关键词
虚拟机
并行迁移
带宽重分配
拉格朗日乘数法
virtual machine
parallel migration
bandwidth reallocation
Lagrange multiplier method
