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.
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.
出处
《计算机系统应用》
2013年第7期177-182,共6页
Computer Systems & Applications
基金
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
关键词
闪存
缓存管理
擦写
局部性
Flash memory
cache management
write and erase
locality
