SHI Zheng, JI Jin-song, CHEN Xiang-lan, et al. A Garbage Collection Algorithm for Flash File System Based on Differential Evolution[J]. Acta Electronica Sinica, 2011, 39(2): 280-284.
SHI Zheng, JI Jin-song, CHEN Xiang-lan, et al. A Garbage Collection Algorithm for Flash File System Based on Differential Evolution[J]. Acta Electronica Sinica, 2011, 39(2): 280-284.DOI:
Flash memory based storage systems are becoming increasingly prevalent.Garbage collection plays an important role in such systems.This paper analyzes popular file system overload
and points out the problems of existing GC algorithms:the performance of Garbage Collection decreases dramatically under high capacity utilization
which has a great impact on write speed.Then the paper proposes a new flash memory garbage collection mechanism based on differential evolution algorithm (DEbGC)
which considers the speed and wear leveling in garbage collection.The experimental results show that DEbGC could amortize the overhead of garbage collection
decrease erase count and number of page copies while satisfying overall performance and wear leveling.