HPAP:High Precision Active Probe for Path Round-trip Delay Measurement

摘要：

　　Path round-trip delay,i.e.,path round-trip time (RTT),is one of the key metrics for evaluating network performance,also plays a crucial role in several overlay network construction protocols,peer-to-peer (P2P) applications,etc.In this paper,we present HPAP,a high precision active probe for path RTT measurement,which is based on Berkeley Packet Filter (BPF) technology.When the measuring probe packets arrive at or depart from the Network Interface Card (NIC),the BPF can capture them quickly,and can mark the timestamps immediately.The HPAP can calculate the path RTT value according to these timestamps.By this method,the time-stamp position can be removed from application program to data link layer of TCP/IP stack.The experimental results show that the new scheme can nearly eliminate the location error,and can practically improve the path RTT measuring accuracy.This scheme has low-cost in the investment,so it can be applied widely.

关键词： network measurement active measurement roundtrip time location error

作者: Chen Shi-qiang Qin Yi-fang

作者单位: College of Computer Science, Sichuan University,Chengdu, China;School of Science, Hubei University f Institute of Acoustics, Chinese Academy of Sciences, Beijing,China

会议类型: 国际会议

会议名称: 2012 IEEE 14th International Conference on Communication Technology(2012年第十四届通信技术国际会议(ICCT 2012))

会议地点: 成都

会议语种:英文

页码: 106-111

在线出版日期: 2012-11-09（万方平台首次上网日期，不代表论文的发表时间）