摘要： 以可编程多核多线程处理器IXP2400为例，围绕随机测试流量的生成问题进行讨论，推导出随机测试流量生成公式，利用分解法对GI/G/m/∞/FCFS多类型客户输入开放排队网络求解，给出输出流到达时间间隔变异系数的求解方法，通过控制测试帧间时延使得生成的测试流量符合多种概率分布。提出的技术应用于“基于IXP2400的网络测试系统”，并对其进行测试，实验验证了该技术的可用性及有 效性。

关键词: 多核多线程处理器, 排队网络, 测试流量, 变异系数

Abstract: This paper analyzes the problem of stochastic test traffic generating, concludes the generating expressions of stochastic test traffic. In the process of concluding, the paper uses GI/G/m/∞/FCFS multiclass open queuing network model to describe it, and gives a new formula for the variation coefficient of the interdeparture time, which controls the latency to make test traffic fit several probability. This paper applies it on the network test system with multi-core and multi-threading processor. Test results show the methodology is available and valid.

Key words: multi-core and multi-threading processor, queuing network, test traffic, variation coefficient

中图分类号: 

• TP393