基于软交换的集群媒体服务器的性能评价Petri网模型

在研究基于软交换的集群媒体服务器的系统结构和软件结构的基础上，利用随机Petri网理论为该类服务器建立了一个性能模型。为了验证模型的有效性，在北京邮电大学网络与交换国家重点实验室网络智能中心开发的基于软交换的集群媒体服务器平台上设计了两种业务类型的实验。对实验结果的分析表明，该性能模型能够反映系统的真实性能状况，是一个有效的数学模型。

Performance evaluation Petri net model of softswitch-based clustered media server

Based on the system architecture and the software structure of the softswitch-based clustered media server, stochastic Petri net theory had been employed to build a performance model for the server. In order to verify the validity of the model, two types of experiments on the platform of softswitch-based clustered media server had been designed. The results of experiments show that the model can reflect the real performance situation of the system and thus it is valid for the server.