应用托管环境下的虚拟机优化调度方法

在面对云服务中典型的应用托管需求时，现有的基础设施即服务IaaS大多采用应用无关的方式进行虚拟机调度，无法针对类型不同的应用托管需求调整调度策略，从而会产生虚拟机集群的负载倾斜及资源利用率不高的情况，甚至会影响所托管的应用。针对上述问题，提出了一种应用托管环境下的虚拟机优化调度方法，通过对所托管应用的分析和物理资源的监控，以贪心方式实现虚拟机周期性的调度策略。实际项目中的应用托管实例表明，该虚拟机调度方法可有效减少所使用的物理服务器数量，并提高物理服务器资源利用率。

An optimization method for virtual machine scheduling in the environment of applications hosting

In the environment of applications hosting, the virtual machines of most current IaaS (Infrastructure as a Service) are scheduled in an application independent way and cannot be adjusted for different dynamic requirements, which leads to load skew among virtual machines and inefficient resource utilization for the hosted applications. To solve these problems, an optimal scheduling method for virtual machines is proposed. Through the analysis and the monitoring on the physical resources for the hosted applications, virtual machines can be scheduled periodically in a greedy fashion. In the experiments from our application hosting environment, the method can reduce the number of physical servers and improve the utilization on those physical servers.