摘要
通过分析数据网格中几种经典的副本管理策略的特点,针对网格这样一个协作计算的环境,提出了基于效益函数的副本管理策略,构建具有协作涵义的效益函数作为网格节点替换本地数据副本的依据.在网格模拟器OptorSim上进行的模拟实验结果表明:提出的基于效益函数的策略相比于基于经济模型的副本管理策略,在降低网络的利用率、减少带宽和存储资源消耗的同时缩短了系统的响应时间,达到了提高系统性能的目的.论证了该策略对于副本的管理是行之有效的.
Analyzing the features of some typical replication strategies in a collaborative data grid environment and building a benefit function that implies the collaboration among grid nodes to replace local data replication, a replication strategy is proposed taking the benefit function as basis. The results of an experiment done on the grid simulator OptorSim showed that the replication strategy proposed can shorten the time required for system response in addition to the reduced utilization of network and economized consumption of bandwidth/storage resource in comparison with some economy-based replication strategies, thus improving the system performance. The validity of the strategy is verified.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第8期1122-1126,共5页
Journal of Northeastern University(Natural Science)
基金
教育部高等学校博士学科点专项科研基金资助项目(20030145017)
