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基于TCP的单终端系统可用带宽测量工具abget,采用类似SLoPS的方法,具有较好的实用性。但这种方法收敛速度慢,测试流较多,对背景流会产生较大影响。结合近几年来的研究成果,将双终端系统中的测量方法引进单终端系统中,对abget探测包串发送速率的调整方法和单向时延趋势的判断算法进行了改进。改进后的方法较原方法提高了测量准确性,加快了测量的收敛时间。
TCP-based single-terminal system available bandwidth measurement tool abget, using a similar SLoPS method, has good practicality. However, the convergence speed of this method is slow and the test flow is more, which will have a greater impact on the background flow. Combined with the research results in recent years, the measurement method in dual-terminal system is introduced into single-terminal system, and the adjustment method of abget detection packet transmission rate and the judgment algorithm of one-way delay trend are improved. Compared with the original method, the improved method improves the measurement accuracy and accelerates the measurement convergence time.