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An analysis of the average message overhead in replica control protocols

机译:副本控制协议中平均消息开销的分析

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Management of replicated data has received considerable attention in the last few years. Several replica control schemes have been proposed which work in the presence of both node and communication link failures. However, this resiliency to failure inflicts a performance penalty in terms of the communication overhead incurred. Though the issue of performance of these schemes from the standpoint of availability of the system has been well addressed, the issue of message overhead has been limited to the analysis of worst case and best case message bounds. In this paper we derive expressions for computing the average message overhead of several well known replica control protocols and provide a comparative study of the different protocols with respect to both average message overhead and system availabilities.
机译:在过去的几年中,复制数据的管理受到了相当大的关注。已经提出了几种在节点和通信链路故障都存在的情况下工作的复制控制方案。但是,这种故障恢复能力会引起通信开销,从而降低性能。尽管从系统可用性的角度来看,这些方案的性能问题已得到很好的解决,但是消息开销的问题仅限于分析最坏情况和最佳情况的消息范围。在本文中,我们推导了用于计算几种众所周知的副本控制协议的平均消息开销的表达式,并就平均消息开销和系统可用性两个方面对不同协议进行了比较研究。

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