网络磁盘阵列I/O请求并行调度策略  

I/O request parallel scheduling policy of network-attached RAID

作　　者：周可[1] 冯丹[1] 王芳[1] 

机构地区：[1]华中科技大学计算机科学与技术学院,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2006年第9期1-3,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家重大基础研究前期研究专项(2004CCA07400);国家重点基础研究发展计划资助项目(2004CB318201)

摘　　要：在研究网络磁盘阵列I/O请求处理过程中,利用网络通道与I/O通道的并行操作,提出了网络磁盘阵列I/O请求并行调度策略,并给出了详细设计与实现.该策略由同步控制和并行调度两阶段组成.控制程序初始化完成后,进入同步控制阶段,同步控制阶段操作I/O请求信息队列,并根据当前条件启动并行调度阶段的不同步骤.并行调度阶段按照启动顺序完成I/O请求,并返回下一次同步控制.研究结果表明,并行调度策略能有效地提高网络磁盘阵列的性能.Adding network interface to a traditional redundant array of indepeudent disks（RAID）, a new kind of RAID is implemented, called network-attached RAID. The I/O request procedure of network-attached RAID is analyzed and parallel I/O scheduling policy is proposed. This scheduling policy consists of two parts, the first is synchronization and the second is parallel scheduling. When the initialization of controlling program is finished, the synchronization operates I/O request information queue and begins with parallel scheduling according to current situation. Parallel scheduling processes I/O request and returns to next synchronization. Tests prove that parallel I/O scheduling policy outperforms serial one.

关 键 词：网络磁盘阵列 I/O请求 并行调度 策略 

分 类 号：TP333.3[自动化与计算机技术—计算机系统结构]