具有QoS特性的文件系统设计与实现

Design and Implementation of a File System with QoS Feature

分析了硬盘数据访问机制,以及流媒体文件的特点和服务质量(QoS)要求,并在新的ATA／ATAPI流命令基础上,定义并实现了一种具有Qos特性的流文件系统,该文件系统在支持流媒体文件优先级和速率控制的同时,保证了软件架构的合理性。

This paper provided a review of the data access mechanism of hard disk, and described the characteristics of streaming media files and its requirement of quality of service （QoS）. Based on the new ATA/ATAPI Steaming Command Set, a streaming file system with QoS feature was designed and implemented on Linux, which supports control to priority and transfer rate of streaming files, and keeps the software architecture reasonable in the mean time.