基于组件结构的软件可靠性计算  

Reliability calculation of component-based software

作　　者：张娟[1] 

机构地区：[1]浙江理工大学科学计算与软件工程实验室,杭州310018

出　　处：《计算机应用》2015年第A02期164-169,共6页journal of Computer Applications

摘　　要：软件可靠性是衡量系统质量的重要指标。针对目前软件可靠性计算方法不能给出软件设计优化建议这个问题,提出了一个基于组件的软件可靠性计算模型。该模型可以描述组件之间的同步和异步交互,根据模型的计算结果,通过求多元函数极值分析出对整个系统可靠性的影响最大的组件,从而优化软件设计。以旅游网站为例,根据所提出的软件可靠性模型计算出对系统影响最大的组件,通过提高该组件的可靠性,提高整个软件系统的可靠性。Software reliability is an important index to measure the software quality. To solve the issue that the existing techniques to compute software reliability can not provide suggestions to optimize the software design,a reliability computing model was proposed based on components. This model can describe synchronous and asynchronous interactions. Based on the computing results and through computing maximal values of multivariable function,the influence to the system reliability introduced by components can be analyzed,therefore the software design can be optimized. This paper used an online travel website as the exmple,and computed the most influenced component to the system reliability based on the reliability model,by improving the reliability of this component,the reliability of the whole system was improved.

关 键 词：软件可靠性 软件测试 软件可靠性计算 Nelson模型 组件 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论]