一种分布计算系统自适应故障侦测方法

面向高可靠智能应用的分布计算系统,首先提出一组故障侦测服务的QoS度量标准,其次给出一种自适应故障侦测方法.该方法使用一个无需统计行为的高度动态的计算方法,动态地估算心跳消息超时时限,并协商改变心跳消息的发送周期,以适应分布计算系统计算节点和网络状态变化,提高故障侦测服务的QoS.模拟实验表明,该方法能够适应分布计算系统状况的变化,在侦测的实时性和正确性上提供较好的平衡.

An Adaptive Failure Detection Method for Distributed Computing Systems

This paper proposes a set of OoS metrics for failure detection service. based on the distributed computing systems of high reliable intelligent applications. An adaptable heartbeat failure detection method is then present. This method dynamically estimates the heartbeat detection timeout using an dynamic algorithm of non-probabilistic behavior. It changes the sending interval of heartbeat according to the processor load and transmission delay of the system. Simulation results show that the failure detector can achieve a compromise between a good detection time and the need of avoiding false detections. It can improve the failure detection QoS of the distributed computing systems.