基于Xen平台的虚拟机交互式性能隔离改进

分析了高整合程度环境下, 虚拟机出现连续性网络延迟峰值的异常现象, 设计并实现 了针对交互式性能隔离的虚拟机调度算法优化方案, 包括协作式抢占、抢占返回和精确核算机制, 这些优化方案不需要对客户操作系统做任何修改。实验表明, 在8台CPU密集型虚拟机同时运行的情况下, 另外8台虚拟机网络延迟的最高5%平均值降低至优化前的0.93%, Firefox浏览邮件延迟的最高5%平均值降低至优化前的56.1%。

Improvement of the Interactive Performance Isolation of Virtual Machines on Xen Platform

The authors address the problem that in a highly-consolidated environment,there are continuous peaks of network latency of guest OS.Three optimizations of VM scheduler are designed and implemented to improve interactive performance isolation,including cooperative preemption,preempt-back and accurate accounting.None of these optimizations needs guest OS to be modified.The evaluation results show that with 8 computing-intensive VMs running concurrently,the average of top 5% network latency of other 8 VMs is r...