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计算机系统应用英文版:2013,22(7):177-182

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一种运用块级局部性的闪存缓存管理策略

龚剑峰¹, 李曦^1,2, 陈香兰¹, 朱宗卫¹, 贾刚勇¹

(1.中国科学技术大学计算机科学与技术学院, 合肥 230027;2.中国科学技术大学苏州研究院, 苏州 215123)

Block Level Locality Aware LRU Cache Management Strategy for Flash Memory Storage

GONG Jian-Feng¹, LI Xi^1,2, CHEN Xiang-Lan¹, ZHU Zong-Wei¹, JIA Gang-Yong¹

(1.School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China;2.Suzhou Institute for Advanced Study, University of Technology and Science of China, Suzhou 215123, China)

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本文已被：浏览 1449次下载 2808次
Received:December 29, 2012 Revised:January 28, 2013

中文摘要: 闪存被广泛应用在电子产品的存储设备中, 针对闪存的研究也日益得到重视. 基于访问的局部性原理, 并结合闪存读写代价的差异性, 提出了一种针对闪存特点运用块级局部性原理的cache缓存管理算法LRU-BLL. 实验表明, 这种方法有效地提高了缓存的命中率, 并且减少了缓存的脏页回写次数和提高了缓冲区的平均换出长度.

中文关键词: 闪存缓存管理擦写局部性

Abstract:Flash memory is widely used as storage media in electronic devices recently, and the researches of flash memory also receives more and more attention. This paper proposes a cache management algorithm called LRU-BLL, which is based on block level locality and replacement cost difference of clean page and dirty page, and combines with character of flash memory. By using simulation to evaluate the scheme, we find hit ratio and number of write/erase operations have a satisfactory improvement in proposed algorithm.

keywords: Flash memory cache management write and erase locality

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基金项目:国家自然科学基金(61272131,61202053);江苏省自然科学基金(SBK201240198);江苏江苏省产学研前瞻性联合研究项目(BY2009128)资助.

引用文本：
龚剑峰,李曦,陈香兰,朱宗卫,贾刚勇.一种运用块级局部性的闪存缓存管理策略.计算机系统应用,2013,22(7):177-182
GONG Jian-Feng,LI Xi,CHEN Xiang-Lan,ZHU Zong-Wei,JIA Gang-Yong.Block Level Locality Aware LRU Cache Management Strategy for Flash Memory Storage.COMPUTER SYSTEMS APPLICATIONS,2013,22(7):177-182

Author Name	Affiliation
GONG Jian-Feng	School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China
LI Xi	School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China Suzhou Institute for Advanced Study, University of Technology and Science of China, Suzhou 215123, China
CHEN Xiang-Lan	School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China
ZHU Zong-Wei	School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China
JIA Gang-Yong	School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China