Abstract: This paper studies the influence of multi-VM and multi-CPU for expansibility of XEN VM network full-virtualization mechanism. Experimental results show that when the VM increases or the amount of CPU goes beyond the limit, the network performance will be decreased. It analyzes the key factors’ influence on the expansibility, that is schedule mechanism and event channel mechanism.

Key words: XEN technology, network, scalability, virtualization

摘要： 研究多虚拟机和多处理器结构对XEN虚拟机中网络I/O完全虚拟化机制可扩展性的影响。实验结果表明，当虚拟机数量不断增加或处理器数量超过限度时，网络性能会下降。该文分析了影响可扩展性的关键因素，即虚拟机调度机制和事件通道机制。

关键词: XEN技术, 网络, 可扩展性, 虚拟化

CLC Number: 

• TP393.02