ACAR: An Adaptive Cost Aware Cache Replacement Approach for Flash Memory
Flash memory has been gaining more popularity as a substi tution for magnetic disk. However, due to asymmetric IO latency, cache management policy needs to be reconsidered in systems equipped with flash. A novel buffer replacement approach named ACAR, which stands for Adaptive Cost Aware cache Replacement, is proposed in this paper to address this problem. Taking operation cost into consideration, ACAR allocates two pools for clean and dirty pages separately. In addition, dynamical pool size tuning is also performed according to IO pattern evolvement, Furthermore, hot data recognition capacity is realized in an enhanced version of ACAR. Experiments with artificial and real IO traces demonstrate ACAR outperforms the state-of-the-art cache replacement strategies.
Yanfei Lv Xuexuan Chen Bin Cui
School of Electronics Engineering and Computer Science, Peking University Key Lab of High Confidence Software Technologies (Ministry of Education), Peking University
国际会议
11th International Conference,WAIM 2010(第十一届网络时代管理国际会议)
九寨沟
英文
558-569
2010-07-14(万方平台首次上网日期,不代表论文的发表时间)