云环境下基于租户的虚拟机分层放置策略

Tenant-Based Hierarchical Virtual Machine Placement Policy in Cloud

云环境下租户申请虚拟机来部署应用或者计算任务,这些虚拟机之间的通信较频繁,需要消耗较多的网络资源。为了减少网络资源的消耗和物理主机资源的浪费,提出了基于租户的初始化放置算法,并结合运行时放置算法调节虚拟机的位置。仿真结果表明,新算法在达到放置目标的同时,减少了需要重新放置的虚拟机数目,降低了迁移代价。

In the cloud ecosystem, regulating virtual machine＇s position can help reduce the communication cost between virtual machines and the waste of physic machine＇s resource. Considering the target of placement in the initialization placement, an initialization placement algorithm base on tenant was proposed. Combined the algorithm with runtime placement algorithm, the placement goal was realized. Simulation results show that the proposed algorithm reduces the number of virtual machines that need to reposition and the cost of migration.