基于Xen平台的虚拟机交互式性能隔离改进  

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

作　　者：夏虞斌[1] 杨春[1] 钮艳[1] 程旭[1] 

机构地区：[1]北京大学微处理器研究开发中心,北京100871

出　　处：《北京大学学报（自然科学版）》2010年第1期41-47,共7页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：国家高技术研究发展计划专项经费(2006AA010202)资助

摘　　要：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%。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, inclnding cooperative preemption, preempt-back and accurate accounting. None otc 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 reduced to as mush as 0.93 % of the original one, and the one of web-mail browsing by Firefox is reduced to 56.1% .

关 键 词：虚拟化 瘦客户计算 交互式性能 调度算法 

分 类 号：TP311.56[自动化与计算机技术—计算机软件与理论]