摘要
提出一种基于驱动域授权表和优先级加权的虚拟IO调度策略,根据不同客户域与请求资源的差异,得出IO请求的调度优先级,实现虚拟IO调度.实验证明,兼顾不同优先级域的调度策略提高了系统的吞吐率,驱动域授权表机制减少了IO虚拟化中授权与页面映射操作的开销.
This paper presents a priority-scheduled strategy for I/O Virtualization with a Driver Domain Grant Table Set mechanism. The optimized mechanism calculates the priority for each new I/O request based on different weight of both domains and resources required, and reschedules the Virtual I/O request queue. The experiment results show that this strategy improves the throughput while giving consideration to domains’ priorities and the Driver Domain Grant Table Set has greatly decreased the overheads on granting and mapping operation.
出处
《微电子学与计算机》
CSCD
北大核心
2010年第8期44-48,共5页
Microelectronics & Computer
关键词
IO虚拟化
I/O环
调度策略
驱动域授权表
I/O virtualization
I/O ring
schedule strategy
driver domain grant table set
