An adaptive file-system-oriented FTL mechanism for flash-memory storage systems
Journal
Transactions on Embedded Computing Systems
Journal Volume
11
Journal Issue
1
Date Issued
2012
Author(s)
Abstract
As flash memory becomes popular over various platforms, there is a strong demand regarding the performance degradation problem, due to the special characteristics of flash memory. This research proposes the design of a file-system-oriented flash translation layer, in which a filter mechanism is designed to separate the access requests of file-system metadata and file contents for better performance. A recovery scheme is then proposed for maintaining the integrity of a file system. The proposed flash translation layer is implemented as a Linux device driver and evaluated with respect to ext2 and ext3 file systems. Experiments were also done over NTFS by a series of realistic traces. The experimental results show significant performance improvement over ext2, ext3, and NTFS file systems with limited system overheads.
Type
journal article