【摘要】 根据流水线技术,将光纤通道适配器的数据传输阶段与SCSI适配器的I/O任务执行阶段按流水线技术并行执行,能充分减少系统总的处理时间,提高系统总的数据传输速度.以FC-RAID 3000为例,分析了磁盘阵列中I/O流水线技术的适用性与基本原理,介绍了通过设置多进程来并行处理光纤卡和SCSI适配器的数据传输过程,对实现流水线前后的性能进行了测试和比较.经测试发现,阵列系统最大数据传输率与未采用流水线技术的系统相比提高了1倍.更多还原

【Abstract】 According to pipeline technology,the data transmission of I/O task was divided into FC adaptor′s transferring data and SCSI adaptor′s executing I/O tasks,and multiple I/O commands can be executed parallelly to improve the transmission rate of the system.Taken FC-RAID 3000 as an example,the basic principle of I/O pipeline technology in RAID and its uses were analyzed.The data transmission process of fiber cards and SCSI adapter were described,in which the data were parallelly handled by multi-process technology.The performance of the system was experimentally tested.The results show that the transmission rate of data in the system are doubled than that of the system in which I/O pipeline technology is not used.更多还原