基于迁移的存储系统热点问题处理  

A Solution to Hot Spots of Storage System Based on Data Migration

作　　者：蒋学[1] 王宏毅[1] 刘璟[1] 

机构地区：[1]南开大学信息技术学院,天津300071

出　　处：《计算机应用研究》2006年第2期45-47,100,共4页Application Research of Computers

基　　金：国家自然科学基金资助项目(60273031);高等学校博士点专项科研基金资助项目(20020055021)

摘　　要：针对存储系统中由于访问集中等原因引起系统性能下降的热点问题,提出了一种基于数据迁移的解决算法。通过对存储系统访问频率的统计以及迁移算法确定数据迁移的源地址和目标地址,通过迁移来消除热点。并通过模拟的环境和实验,结果表明算法有效地消除了系统出现的热点,并在一定程度均衡了负载,提高了系统性能。An algorithm based on data migration is advanced in this paper to eliminate hot spots. This algorithm chooses the source and destination of migration and an obvious progress in performance is expected after migration. By using the algorithm, hot spots can be eliminated when they are found, and the system load is also balanced. We did some simulation experiments to test the algorithm. The results show that the algorithm works well and can improve the performance of system greatly.

关 键 词：热点 负载均衡 RAID组 NP完全问题 0-1背包问题 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]