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数据网格中一种均衡性能的副本一致性算法

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Indexed by:期刊论文

Date of Publication:2010-08-01

Journal:计算机工程与应用

Included Journals:PKU、ISTIC、CSCD

Volume:46

Issue:22

Page Number:83-87

ISSN No.:1002-8331

Key Words:一致性协议;多层框架;随机选择;性能均衡

Abstract:通过比较和分析数据网格环境下aggressive-copy和lazy-copy两个副本一致性协议,针对两个协议的不足,在扩展副本一致性框架的基础上提出了一种新的副本一致性lazy_agg-copy算法.该算法在多层框架下随机选择部分副本进行一致性更新,可以弥补已有两种算法的缺点.将lazy_agg-copy算法和已有两种在网格模拟软件OptorSim下进行了模拟.模拟结果表明,lazy_agg-copy算法在实时性、网络负载和带宽消耗方面都能取得更好的均衡,可以达到更优的整体效果.

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