监控系统的软件可靠性建模、度量与预测

Software Reliability Modeling,Measuring and Forecasting in Computer Supervisory System

该文针对监控系统软件可靠性分析的实时性和求解高效性,通过各类软件可靠性模型的比较、分析,CMSRA系统采用了Goel-Okumoto(NHPP)模型进行了理论推导、有解无解分析。通过对数据的处理,CMSRA可得到的评估指标包括前故障发生次数、下一故障发生时间、当前错误查出率、当前失效率等评估参数值。所有评估结果可视化显示。根据模型函数特点,系统采用了高效精确的快速弦截数值求解算法,保证了在最短时间内求得满意解。

Considering the real time ability and extracting efficiency requested by the reliability analysis,CMSRA system adopts Goel-Okumoto(NHPP)model after having compared the reliability of different software.And then the theoretical analysis and root status has been acquired.By means of disposing on complete data,CMSRA can get such targets as currently accumulated failures,next failure time ,discoverable ratio of current failures and ratio of current invalidation etc.All evaluation results can be shown by vision.According to the characters of each model function,the system has constructed efficient and accurate numerical value arithmetic in order to acquire the satisfactory root in the shortest time.