Active log pool for fully associative sector translation

IEICE Electronics Express

Yong-hyeon Shin²  Ilhoon Shin¹ 

[1] Department of Electronic Engineering, Seoul National University of Science & Technology;Department of Computer Science & Engineering, Seoul National University of Science & Technology

关键词: worst-case performance;    association degree;    log block;    FAST;    flash translation layer;    NAND flash memory;   

DOI  :  10.1587/elex.10.20130942

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(6)Cited-By(1)Although NAND-based block devices offer good average performance compared to hard disk drives, their poor worst-case performance can be a serious problem in servers and real-time systems. In order to address it, this study proposes to use an active log pool to isolate the working sectors of each process to different NAND blocks. Doing so reduces the association degree of log blocks, which in turn reduces the worst-case write latency. A trace-driven simulation shows that the worst-case latency is reduced up to 1/9 compared to the original scheme without hurting the average performance severely.

【 授权许可】

Unknown