【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%。更多还原

【Abstract】 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 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%.更多还原