| 基于高精度性能计数器的网络单向时延研究 |
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| 引用本文： | 秦张淼,周红卫,薛竞翔.基于高精度性能计数器的网络单向时延研究[J].小型微型计算机系统,2010,31(5). |
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| 作者姓名： | 秦张淼 周红卫 薛竞翔 |
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| 作者单位： | 中国电子科技集团公司,第二十八研究所C4ISR技术国防科技重点实验室,江苏,南京,210007 |
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| 摘 要： | 区别于常规的消除时钟偏差和时钟频差的网络单向时延测量方法,提出一种新的单向时延测量方法.利用两主机的高精度性能计数器的相对关系,推导出基于高精度性能计数器的网络单向时延表达式,为了估算表达式中的待定项,在两主机之间建立TCP连接,周期性双方向交换性能计数器信息,通过包对理论,定时更新时延表达式中的待定项.结果显示,该方法完全不需要主机之间的时钟同步,具有精度高、可在线测量的优点,同时,它提供了一种非对称网络环境下单向时延测量的手段.
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| 关 键 词： | 单向时延 高精度性能计数器 包对 瓶颈带宽 网络测量 |
Research on One-way Delay of Network Based on High-resolution Performance Counter |
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| QIN Zhang-miao,ZHOU Hong-wei,XUE Jing-xiang.Research on One-way Delay of Network Based on High-resolution Performance Counter[J].Mini-micro Systems,2010,31(5). |
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| Authors: | QIN Zhang-miao ZHOU Hong-wei XUE Jing-xiang |
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| Affiliation: | QIN Zhang-miao,ZHOU Hong-wei,XUE Jing-xiang(C4ISR National Defense Science , Technology Key Lab,the 28th Research Institute of China Electronics Technology Group Corporation,Nanjing 210007,China) |
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| Abstract: | A novel measurement approach for one-way delay is proposed,which is different from conventional measurement based on some assumptions to remove clock offset and skew. Expression of one-way delay is derived from relative relationship between two hosts based on high-resolution performance counter. TCP connection between two hosts is established in order to evaluate the unknown parameter in the delay expression. Values of the performance counter are exchanged in both directions periodically,and the unknown par... |
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| Keywords: | one-way delay high-resolution performance counter packet pair bottleneck bandwidth network measurement |
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