A garbage collector design and implementation for flash memory file system


The KIPS Transactions:PartA, Vol. 14, No. 1, pp. 39-46, Feb. 2007
10.3745/KIPSTA.2007.14.1.39,   PDF Download:

Abstract

Recently flash memory is widely accepted as a storage device of embedded systems for portability and performance reasons. Flash memory has many distinguishing features compared to legacy magnetic disks. Especially, a file system for flash memory usually assumes the form of log-structured file system and it employs garbage collector accordingly. Since the garbage collector can greatly affect the performance of file system, it should be designed carefully considering flash memory features. In this paper, we suggest a new garbage collector for existing JFFS2 (Journaling Flash File System II) file system. By extensive performance evaluation, we show that the proposed garbage collector achieves improved performance in terms of flash memory consumption rate, increased flash memory life time, and improved wear-leveling.


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Cite this article
[IEEE Style]
K. Y. Kim, S. H. Son, D. H. Shin, "A garbage collector design and implementation for flash memory file system," The KIPS Transactions:PartA, vol. 14, no. 1, pp. 39-46, 2007. DOI: 10.3745/KIPSTA.2007.14.1.39.

[ACM Style]
Ki Young Kim, Sung Hoon Son, and Dong Ha Shin. 2007. A garbage collector design and implementation for flash memory file system. The KIPS Transactions:PartA, 14, 1, (2007), 39-46. DOI: 10.3745/KIPSTA.2007.14.1.39.