大容量NAND Flash文件系统转换层优化设计
收稿日期: 2009-12-18
修回日期: 2010-04-20
网络出版日期: 2011-04-25
Optimization Design of the NAND Flash Transition Layer Based on the LargeScale NAND Flash
Received date: 2009-12-18
Revised date: 2010-04-20
Online published: 2011-04-25
针对基于NAND Flash转换层(NFTL)架构的Flash文件系统在大容量NAND Flash设备上存在的性能不足, 本文分析了NFTL的存储管理机制,基于vxworks嵌入式系统平台提出了对NFTL模块的优化设计方法并进行了具体实现。实验表明,优化后的NFTL模块有效提高了文件系统的读写性能,缩短了加载时间。
关键词: NAND flash; flash转换层; vxworks; 文件系统
张辉1,2,晏益慧1,罗宇1 . 大容量NAND Flash文件系统转换层优化设计[J]. 计算机工程与科学, 2011 , 33(4) : 81 -85 . DOI: 10.3969/j.issn.1007130X.2011.
Aiming at the limitations of the Flash file system of the NAND Flash Transition Layer(NFTL) on Largescale Nand Flash Memory, the paper analyses the storage mechanism of NFTL, presents an improved algorithm and gives an implementation procedure in detail based on the vxworks embedded system platform. The result shows that the new NFTL greatly increases the the speed of read/write operation and shortens the mount time.
Key words: NAND flash;NFTL;vxworks;file system
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