基于节点负载评估和动态阈值的虚拟机迁移触发策略研究  

TRIGGER STRATEGY OF VIRTUAL MACHINE MIGRATION BASED ON NODE LOAD EVALUATION AND DYNAMIC THRESHOLD

作　　者：王晶 何利力 Wang Jing;He Lili(School of Information Science and Technology,Zhejiang Sci-Tech University,Hangzhou 310018,Zhejiang,China)

机构地区：[1]浙江理工大学信息学院,浙江杭州310018

出　　处：《计算机应用与软件》2021年第10期92-99,共8页Computer Applications and Software

基　　金：国家重点研发计划项目(2018YFB1700702);浙江省科技厅(重大)项目(2015C03001)。

摘　　要：针对现有的虚拟机迁移触发策略中由于负载瞬间峰谷值易导致的过度迁移问题以及触发时机不合理造成的资源浪费问题,综合考虑数据中心节点的异构性与资源配置的差异性,设计一种基于节点负载评估和动态阈值的虚拟机迁移触发策略(NLADT-MMT)。由全局监测模块动态调整标准状态阈值,节点监测模块根据标准阈值和配置信息更新状态阈值,并结合负载预测实现对节点状态进行有效评估并以此判定迁移时机,达到减少虚拟机迁移次数和降低SLA违约率的目的,提高数据中心的资源利用率。仿真实验表明,该方案可以有效减少虚拟机迁移次数,降低平均SLA违约率,并提高数据中心资源的利用率。In view of the problem of excessive migration caused by the instantaneous peak-to-valley value of the load and the resource waste caused by the unreasonable triggering time in the existing virtual machine migration triggering strategy,considering the heterogeneity of the data center nodes and the resource allocation difference comprehensively,a virtual machine migration triggering strategy(NLADT-MMT)based on node load evaluation and dynamic threshold is proposed.The global monitoring module dynamically adjusted the standard state threshold,and the node monitoring module updated the state threshold according to the standard threshold and the configuration information.It combined the load prediction to effectively evaluate the node state and the migration timing,thereby reducing the number of virtual machine migrations and reducing the SLA default rate,finally optimizing the resource utilization rate.The simulation experiments show that this scheme can effectively reduce the number of virtual machine migrations and average SLA default rate,and improve the utilization of data center resources.

关 键 词：负载评估 负载预测 动态阈值 迁移时机 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]