%0 Journal Article
%T A High Precision Approach of Network Delay Measurement Based on General PC<br>基于通用PC架构的高精度网络时延测量方法
%A LI Wen-Wei
%A ZHANG Da-Fang
%A XIE Gao-Gang
%A YANG Jin-Min
%A <br>黎文伟
%A 张大方
%A 谢高岗
%A 杨金民
%J 软件学报
%D 2006
%I 
%X Delay is the foundation for accurately measuring network performance metrics such as delay jitter, bandwidth, etc. While the delay measurement methods currently used have poor precision, for there exist clock errors and location errors. In this paper, an improved method for delay measurement is proposed. It replaces system clock with TSC (time stamp counter) register as time-stamping to eliminate clock errors, and it removes the time-stamping place from application to network driver to eliminate location errors. The precision has been elevated largely. Experiments show that when comparing with traditional methods under different packet lengths, the improved method can reduce measurement errors 21%~150%, and the measured delays are more stable. Furthermore, it basically has no effect on system throughput. The improved measurement method is based on general PC, so it has lower measurement cost and can be applied widely.
%K TSC(time stamp counter)<br>时延测量
%K 网络测量
%K 主动测量
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=7735F413D429542E610B3D6AC0D5EC59&aid=4B69BB2D43CD4CA3&yid=37904DC365DD7266&vid=BCA2697F357F2001&iid=0B39A22176CE99FB&sid=7979125BBE749348&eid=03E56C113B4E5A88&journal_id=1000-9825&journal_name=软件学报&referenced_num=11&reference_num=32