摘要
对Linux中基于MTD(Memory Technology Device)的UBI(Unsorted Block Images)子系统和基于UBI的UBIFS的二者内部工作机制和算法进行分析,在此基础上着重探讨UBIFS实现快速挂载与I/O的原理。在同一嵌入式Linux系统中分别使用直接基于MTD的JFFS2和基于UBI的UBIFS,对它们的挂载和I/O时间进行性能测试比对,证实UBIFS实现嵌入式Linux文件系统的快速挂载与读写。
By analysing internal working mechanisms and algorithms of the UBI subsystem which is MTD-based and the UBIFS which is UBI-based in Linux,the principles of rapid mounting and I/O were elaborately addressed.Two subsystems,the JFFS2 directly based on MTD and the UBIFS based on UBI were used separately in same embedded Linux system,and their performances of mounting and I/O time were tested in contrast.The UBIFS was confirmed to have implemented fast mounting and fast reading and writing.
出处
《计算机应用与软件》
CSCD
2010年第10期68-71,共4页
Computer Applications and Software
基金
上海市科委重大项目(08dz1500405)
关键词
UBI
MTD
UBIFS
Unsorted Block Image（UBI）
Memory Technology Device（MTD）
Unsorted Block Image File System（UBIFS）
