摘要： 当基础设施即服务(IaaS)云计算中心的资源需要重新分配时，MM策略在选择迁出集合进行动态迁移时存在过多迁移，因此增大了服务等级协议(SLA)的违反几率，并且会导致能量消耗过多。针对该问题，提出一种改进的资源调度策略FMS。通过服务运行的历史数据得到各虚拟机的资源使用情况，分两阶段对物理机集合进行扫描，从中选出需要迁出的虚拟机并与物理机进行映射。CloudSim软件上的实验结果表明，FMS能减少虚拟机的迁移次数，降低迁移开销，而且能更好地满足服务的SLA，实现IaaS模型下资源的优化部署。
关键词:
云计算,
服务等级协议,
资源消耗,
虚拟化,
动态迁移,
基础设施即服务
Abstract: When Infrastructure as a Service(IaaS) cloud computing center’s resources need to be reallocated for some reason, Minimization of Migrations(MM) strategy has more migrations when choosing migration set in processing live migration. It increases the violation probability of Service Level Agreement(SLA) and generates a lot of useless energy consumption. Considering this problem, it proposes a modified strategy Find-Migration-Search(FMS). Through the history data of services, it can get the status of each virtual machine. Then the program scans each physical machine with two phase. CloudSim simulation results indicate that the modified strategy FMS can not only lower the times of virtual machines’ migration and energy consumption, but also satisfy services’ SLA much better, and implements resources optimization deployment under IaaS model.
Key words:
cloud computing,
Service Level Agreement(SLA),
resource consumption,
virtualization,
dynamic migration,
Infrastructure as a Service(IaaS)
中图分类号:
吴海双, 张亮, 李杰辉. IaaS环境中一种保证SLA的资源调度策略[J]. 计算机工程, 2013, 39(7): 51-54.
TUN Hai-Shuang, ZHANG Liang, LI Jie-Hui. Resource Scheduling Strategy for Guaranteeing SLA in IaaS Environment[J]. Computer Engineering, 2013, 39(7): 51-54.