基于检验点技术的云服务可靠性度量模型  

Reliability measurement model of cloud service based on checkpointing technique

作　　者：何利[1] 赵志元[1] 

机构地区：[1]重庆邮电大学计算机学院,重庆400065

出　　处：《重庆邮电大学学报（自然科学版）》2012年第6期699-702,共4页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：重庆市自然科学基金(CSTC2012jjA40039);重庆市教委科学技术研究项目(KJ120508)~~

摘　　要：可靠性是云服务的典型特性之一。在云计算环境下提出了一种基于检验点回卷策略的云服务可靠性度量模型,该模型针对云服务系统中虚拟机任务计算节点的故障失效会导致系统服务可靠性发生变化的问题,基于检验点回卷策略建立了云服务可靠性度量模型。通过理论推导证明了度量模型的正确性,并证明了检验点设置时间按一定指数值增长时,服务可靠性可以得到优化。Reliability is one of the typical characteristics of cloud services.In this paper,a reliability measurement model of cloud service is proposed.It is based on checkpointing rollback strategy on the cloud computing environment,which is aimed at service reliability problems by the failure of virtual machine task computing node on cloud service system,and based on the checkpoint rollback strategy.It is proved that the measurement model is correct by the derivation,and if the checkpoint time sequence is exponentially distributed,service reliability can be optimized.

关 键 词：云服务 可靠性 检验点回卷策略 度量模型 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]