考虑失效恢复的组合服务性能建模与分析

发布时间：2018-07-28 16:36

【摘要】：互联网环境下运行的组合服务易受到资源故障和组件失效影响而导致失效.已有的失效恢复措施在提高服务可用性的同时也会对服务的性能产生负面影响.为了对失效可恢复情况下的组合服务性能进行量化,通过综合组合服务失效类型和恢复策略,给出一种考虑失效恢复的组合服务性能分析模型.采用排队Petri网(queueing Petri net,简称QPN)描述组合服务的失效发生及其恢复处理过程,重点研究实施重试和替换策略的服务运行情况.详细描述了考虑失效恢复的服务节点和链路QPN模型的内部结构,在此基础上,通过服务交互机制构建组合服务分散执行的性能模型.最后,采用QPME工具仿真和比较不同失效发生率、失效类型分布和恢复策略下组合服务模型的性能表现.结果表明,该方法能够定量分析失效恢复对组合服务性能的影响,有助于指导不确定网络环境下的信息服务系统失效恢复策略实施方案的设计.
[Abstract]:Combined services run in the Internet environment are vulnerable to resource failure and component failure. The existing failure recovery measures can also have a negative impact on service performance while improving service availability. In order to quantify the performance of composite services under the condition of failure recovery, the failure to restore the service performance is invalidated through a comprehensive combination of services. Type and recovery strategy, a combination service performance analysis model considering failure recovery is given. Queueing Petri net (QPN) is used to describe the failure occurrence and recovery process of composite service, and the service transportation of retrial and replacement strategy is focused on. The service considering failure recovery is described in detail. On the basis of the internal structure of the node and link QPN model, the performance model is constructed by the service interaction mechanism. Finally, the QPME tool is used to simulate and compare the different failure incidence, the failure type distribution and the performance of the combined service model under the recovery strategy. The results show that the method can be quantified in quantitative analysis. The effect of effective recovery on the performance of composite services is helpful to guide the design of the failure recovery strategy implementation scheme of information service system under uncertain network environment.
【作者单位】：东南大学计算机科学与工程学院;中国矿业大学计算机科学与技术学院;
【基金】：国家自然科学基金(61003257,61070161,61070158,61003311,61272531,61272054,61202449) 国家重点基础研究发展计划(973)(2010CB328104) 国家高技术研究发展计划(863)(2013AA013503) 国家科技支撑计划(2010BAI88B03,2011BAK21B02) 国家核高基科技重大专项(软件类)(2010ZX01044-001-001) 高校博士点专项基金(20110092130002) 江苏省自然科学基金重点项目(BK2008030) 江苏省网络与信息安全重点实验室(BM2003201) 教育部网络与信息集成重点实验室(93K-9)
【分类号】：TP393.09;TP301.1

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