一种结合主动和被动方式的网络延迟测量方法

一种结合主动和被动方式的网络延迟测量方法 An Efficient Measuring Latency Method Combining Active and Passive Approaches 蔡志平 CAI Zhi-ping 1 2 first-author 殷建平 YIN Jian-ping 1 2 刘湘辉 LIU Xiang-hui 1 2 吕绍和 LU Shao-he 1 2 国防科技大学计算机学院 国防科技大学计算机学院 School of Computer Science, National University of Defense Technology School of Computer Science, National University of Defense Technology 国防科技大学计算机学院,湖南,长沙,410073 国防科技大学计算机学院,湖南,长沙,410073 在利用被动测量设备检测到的用户包数量基础上,考虑相邻探测包的延迟变化关系,实现了一种结合主动和被动方式的网络延迟有效测量方法.这种测量方法不但具有与协议无关、对网络流量影响小、使用简单等特点,在网络拥塞甚至存在丢包的情况下,能减小误差,更准确地反映网络的实际状况. The performance of network measured by the active measurement generally differs from the actual performance that the users experience. It can obtain more exact result by using the characteristics of packets gained by passive measuring to calibrate the result of active measuring. Considering the number of user data packets arriving between probe packets and the latency alteration of neighborhood probe packets, the method combing active and passive approaches is efficient to measure network latency. This method has some advantages such as protocol-independent, negligible extra traffic and convenience. Especially, this method can diminish the errors and reflect the network status more exactly even with the network congestion and packet loss. 网络性能监测 延迟测量 主动测量 被动测量 monitoring network performance measuring latency active measurement passive measurement TN915 国家自然科学基金资助项目（60373023） 2004-05-01 2021-04-01 5