Block Utilization-Aware Buffer Replacement Scheme for Mobile NAND Flash Storage

Dong Hyun KANG  Changwoo MIN  Young Ik EOM  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E97-D   No.9   pp.2510-2513
Publication Date: 2014/09/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2014EDL8021
Type of Manuscript: LETTER
Category: Data Engineering, Web Information Systems
Keyword: 
buffer replacement scheme,  NAND flash storage,  mobile devices,  

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Summary: 
NAND flash storage devices, such as eMMCs and microSD cards, are now widely used in mobile devices. In this paper, we propose a novel buffer replacement scheme for mobile NAND flash storages. It efficiently improves write performance by evicting pages flash-friendly and maintains high cache hit ratios by managing pages in order of recency. Our experimental results show that the proposed scheme outperforms the best performing scheme in the recent literature, Sp.Clock, by 48%.