基于网络驱动接口规范的网络时延测量位置误差消除方法

在网络性能测量中，位置误差是影响网络时延测量精度的主要因素之一。针对位置误差问题，提出一种基于Windows网络驱动接口规范(NDIS)的时延测量改进方法。通过在微端口驱动(MD)和协议驱动(PD)间插入一个NDIS中间层驱动(ID)程序，将测量时间戳记录位置从应用程序下移到该中间层驱动，测量程序依据其记录的时间戳计算网络时延值。实验结果表明，与传统方法比较，在不同主机负载和包长度下，所提方法基本消除了位置误差，测量值标准差小于10μs，并且不需要额外软硬件支持，测量成本低，适合普遍采用。

Location error eliminating approach for network delay measurement based on network driver interface specification

In the network performance measurement,location error is one of the main factors which influence the accurate network delay measurement.To reduce location error,an improved method for delay measurement was proposed based on Windows Network Driver Interface Specification(NDIS).By using this method,the timestamp position was removed from application to NDIS Intermediate Driver(ID) which was embedded between Miniport Driver(MD) and Protocol Driver(PD),and then the measurement program could calculate the network delay according to those timestamps.Compared with the traditional method,the experimental results show that the proposed method can nearly eliminate location error,and make sure the measurement standard deviation to be lowered than 10 μs under different packet-lengths and host-loads.The improved measurement method does not need additional software and hardware,so it has lower measurement cost and can be applied widely.