WIA-PA中自适应心跳协议的研究与设计  

Research and Design of Adaptive Heartbeat Protocol in WIA-PA

作　　者：张丹[1] 刘枫[1] 杨颂华[1] 

机构地区：[1]西南大学计算机与信息科学学院,重庆400715

出　　处：《自动化与仪表》2009年第8期1-4,共4页Automation & Instrumentation

基　　金：国家863基金资助项目(2007AA041201-7)

摘　　要：该文以WIA-PA网络中簇首的双机温备份冗余系统为研究对象,提出一种自适应心跳协议。该协议基于拉模型,根据主簇首的健康状态和当前簇内通信任务的繁重程度,利用时隙冗余技术动态调整心跳周期,提高心跳协议的网络环境适应性和可靠性。实验表明,该协议通过改变心跳周期能在系统通信压力、故障检测延迟与误检率三方面达到较好平衡,最终实现心跳检测的准确性和系统的高可用性。In this paper, we proposed an adaptive heartbeat protocol based on the study of the warm dual-cluster re- dundant system in WIA-PA. Pull-based model of the protocol, according to current healthy state of the host Cluster- Head and the communication pressure in the cluster, this protocol adopts redundant slot to adjust heartbeat cycle dy- namically, which can improve the adaptability of the network and reliability. The experimental results show that the pro- tocol by changing the heartbeat cycle can achieve a better balance in the system communication pressure, fault detection delay and false rate, and ultimately achieve the accuracy of heartbeat detection and high-availability of systems.

关 键 词：冗余 心跳 时隙 适应性 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]