This paper provides a preliminary assessment of the effectiveness of an application layer tool that measures the Bulk Transfer Capacity (BTC) of a network path. BTC is roughly defined as the throughput that a flow using standard congestion control techniques would obtain across a given network path at a given time. We utilize the NIMI mesh of measurement hosts to compare stock BSD TCP with a new BTC measurement tool, cap. While BTC tools have been around for some time, no systematic evaluation of their accuracy with respect to standard TCP congestion control across a wide variety of network paths has been conducted. The goal of this paper is to provide such an empirical evaluation of a BTC tool and therefore assess the reliability of the measurement obtained using BTC tools.
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机译：本文提供了对评估网络路径的批量传输容量（BTC）的应用层工具的有效性的初步评估。 BTC大致定义为使用标准拥塞控制技术的流在给定时间跨给定网络路径将获得的吞吐量。我们利用测量主机的NIMI网格将库存的BSD TCP与新的BTC测量工具 cap 进行比较。虽然BTC工具已经存在了一段时间，但尚未针对各种网络路径上的标准TCP拥塞控制对其准确性进行系统的评估。本文的目的是提供对BTC工具的这种经验评估，从而评估使用BTC工具获得的测量的可靠性。
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