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为解决现有副本更新策略的瓶颈问题,提出一种基于时间戳和副本标识的非集中副本更新一致性模型DRCSM,该模型将更新的功能转移到各个次副本节点,可以有效地解决单一的从主副本节点更新带来的弊端.对新的模型DRCSM做了框架设计和过程设计,并加以比较分析.用仿真软件Optorsim实现了DRCSM和现有两种副本一致性模型Aggressive copy,Lazycopy.仿真结果也表明,DRCSM能有效地减少平均作业执行时间以及网络负载,并在复制的次数上优于积极拷贝,具有整体更优的性能.
In order to solve the bottleneck problem of existing replica update strategy, a non-centralized replica consistency update model DRCSM based on timestamp and replica identification is proposed. The model transfers the updated functions to each secondary replica node, which can effectively solve a single Main and duplicate nodes are updated, the frame design and process design of the new model DRCSM are done and compared and analyzed.The simulation software Optorsim is used to realize the DRCSM and the existing two replica consistency models Aggressive copy, Lazycopy. Simulation results It also shows that DRCSM can effectively reduce the average job execution time and network load, and is superior to the positive copy in the number of times of copying, which has the overall better performance.