Implementing a semi-active replication strategy in CHORUS/ClassiX, a distributed real-time executive
Implementing a semi-active replication strategy in CHORUS/ClassiX, a distributed real-time executive
复制标题
在分布式实时执行器 CHORUS/ClassiX 中实施半主动复制策略
DOI：
10.1109/reldis.1999.805086
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Y. Trinquet
中科院分区：
文献类型：
--
作者：
A. Déplanche;Pierre;Y. Trinquet
本文报告了一种策略的实际实现，该策略支持运行在Chorus/ClassX分布式操作系统上的实时软件组件(即任务集)的半主动复制。本文提出的复制策略的主要特点是解决了副本确定性的主要困难。半主动复制方案由引导者软件组件和完全相同的跟随者副本组成。只有领导者组件发送应用程序消息以及指示消息已被消费和生产的顺序的通知。在不同副本内的任务的动态非确定性调度可能导致跟随者任务相对于领导者的任务在其执行中滞后。
The paper reports a practical implementation of a strategy to support semi-active replication of real-time software components (i.e. sets of tasks) running on the Chorus/ClassiX distributed operating system. The main property of the replication strategy developed in this paper is to solve the major difficulty of replica determinism. The semi-active replication scheme consists of a leader software component and identical follower replicas. Only the leader component sends out application messages as well as notifications indicating the order the messages have been consumed and produced. Dynamic non-deterministic scheduling of tasks within the different replicas may cause the follower tasks to lag in their execution regarding the leader ones.