摘要
研究磁盘阵列的Ｉ／Ｏ调度问题．给出了建立在实时操作系统上的系统调度模型；在分析磁盘的Ｉ／Ｏ调度算法的基础上，提出一种适合磁盘阵列的多队列实时调度算法．该算法为每个磁盘指定了一个请求队列，并根据请求之间的依赖关系确定可并行执行的任务组．测试结果证明。
The I/O scheduling problem of disk array is discussed. The
system scheduling model built on real time operating system is given. On the basis of disk I/O
scheduling algorithm, a multi queue real time I/O scheduling algorithm based on disk array is
designed. A request queue is given to every disk. The correlation between requests is used to
decide the task group that can be executed in parallel. The performance is measured. It is seen
from the result that this algorithm has very excellent performance.
出处
《华中理工大学学报》
CSCD
北大核心
1999年第4期1-2,共2页
Journal of Huazhong University of Science and Technology
基金
国家自然科学基金
国防预研基金
关键词
磁盘阵列系统
实时操作系统
I/O调度
disk array system
real time operating system
I/O scheduling algorithm
