Evaluating the Benefits: Quantifying the Effects of TCP Options, QUIC, and CDNs on Throughput

Simon Bauer, Patrick Sattler, Johannes Zirngibl, Christoph Schwarzenberg, G. Carle
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Abstract

To keep up with increasing demands on quality of experience, assessing and understanding the performance of network connections is crucial for web service providers. While different measures, like TCP options, alternative transport layer protocols like QUIC, or the hosting of services in CDNs, are expected to improve connection performance, no studies are quantifying such impacts on connections on the Internet. This paper introduces an active Internet measurement approach to assess the impacts of mentioned measures on connection performance. We conduct downloads from public web servers considering different vantage points, extract performance indicators like throughput, RTT, and retransmission rate, and survey speed-ups due to TCP option usage. Further, we compare the performance of QUIC-based downloads to TCP-based downloads considering different option configurations. Next to significant throughput improvements due to TCP option usage, in particular TCP window scaling, and QUIC, our study shows significantly increased performance for connections to domains hosted by different giant CDNs.
评估效益:量化TCP选项、QUIC和cdn对吞吐量的影响
为了跟上对体验质量日益增长的需求,评估和理解网络连接的性能对web服务提供商来说至关重要。虽然不同的措施,如TCP选项、QUIC等替代传输层协议,或在cdn中托管服务,有望改善连接性能,但没有研究量化这些对互联网连接的影响。本文介绍了一种主动互联网测量方法来评估上述措施对连接性能的影响。我们从考虑不同有利位置的公共web服务器进行下载,提取吞吐量、RTT和重传率等性能指标,并调查由于TCP选项使用而导致的加速。此外,考虑到不同的选项配置,我们比较了基于quic的下载和基于tcp的下载的性能。由于TCP选项的使用,特别是TCP窗口扩展和QUIC,我们的研究表明,连接到由不同的大型cdn托管的域的性能显着提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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