面向CPS的节点文件系统  

The File System of CPS Oriented Node Operating System

作　　者：杜晓舟[1,2] 张宇皓 乔建忠[1] 林树宽[1] 

机构地区：[1]东北大学信息科学与工程学院,沈阳110819 [2]总参通信工程设计研究院,沈阳110005 [3]趋势科技中国研发中心,南京210012

出　　处：《北京邮电大学学报》2014年第5期100-104,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金资助项目(61272177)

摘　　要：针对信息物理融合系统(CPS)的时间关键性和节点二级存储的必要性,在深入研究闪存文件系统和传感节点存储系统的基础上,提出一种级联日志策略和虚拟扇区映射技术相结合的方法来保证数据操作的可预测性,并优化文件架构和数据操作来提高文件系统效率.仿真测试表明,系统的顺序输入/输出(I/O)性能与随机I/O性能稳定,且代码映像较小,便于部署在存储资源有限的节点系统上.Considering the characteristics of predictability for cyber physical systems （CPS） and the re- quirement of secondary storage for node systems, a research was carried for the existing flash file and sen- sor node file systems. A new node file system for CPS was designed, adopting virtual sector mapping technology and cascading page log strategy to ensure predictability, and also optimizing the file structures and data operations to improve efficiency. Experiments on the flash simulator show that the system has stable performances of sequence input/output （I/O） and random I/O. And the system image keeps small that means it is suitable to deploy on resource-limited nodes.

关 键 词：信息物理融合系统 节点操作系统 文件系统 虚拟扇区映射 级联日志 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论]