可用带宽与瓶颈定位集成测量工具iPathneck

目前大部分的网络测量工具都是采用主动测量方法，但是由于大量的探测包注入会给网络带来流量负载并影响测量精度．如何在保证测量精度的前提下减小测量开销，成为值得关注的问题．提出的集成测量工具iPathneck在Pathneck工具的基础上采用速率模型提高可用带宽的测量精度，实现了可用带宽和瓶颈定位探测任务的归并，减小了测量开销并提高测量精度．实验表明：iPathneck可用带宽和瓶颈定位的测量准确性和算法时间收敛性都有所提高，任务归并能有效地减小测量开销．

Combined Tool for Measuring of Available Bandwidth and Locating Internet BottleneckiPathneck

Presently, most of the network measurement tools are active. But they bring heavy overhead and impact the measurement accuracy. We concern how to ensure measurement accuracy with reducing the overhead. In this work, a new measurement scheme iPathneck based on Pathneck is proposed to perform better than Pathneck on measuring ABW by using probe rate model, iPathneck combines tasks to measure ABW and to locate Internet bottleneck. Experiment will show that iPathneck achieve shorter convergence time, lighter measurement overhead and higher accuracy.