基于网络演算的远程测试系统实时性能分析

Real-time performance evaluation in remote testing system based on network calculus

为了衡量存在复杂竞争数据流的远程测试通信网络是否满足测试数据流实时性的要求,建立了远程测试系统的网络演算模型,并在非抢占式静态优先级服务策略下,利用网络演算理论推导了远程测试业务数据端到端延迟上界的数学计算方法。最后通过对比分析仿真延迟和计算延迟,验证了该方法的有效性。在此基础上,运用该方法分析了竞争数据流对测试业务数据实时性的影响。

To determine whether remote testing network with the competition streams meets the require-ment of real-time test data, the network calculus model of the remote testing system is advanced. And in the non-preemptive priority service strategy, a method of end-to-end upper delay bound calculation is derived, based on the network calculus theory. Finally, through the comparison of simulation and computation delay, the effec-tiveness of the method is verified and the real-time influence of competition flows on test data is analyzed by it.