COVID-19大流行对互联网延迟的影响：一项大规模研究
Impact of the COVID-19 pandemic on the Internet latency: a large-scale study
AI总结：
本研究评估了COVID-19大流行期间线上活动激增对互联网延迟的影响，发现在意大利封锁期间延迟标准差和丢包率分别增至约3-4倍和2-3倍，其他欧洲国家也受到不同程度的影响。
摘要：
COVID-19大流行在极短的时间内极大地改变了数十亿人的生活方式。在本文中，我们评估了由于线上进行的人类活动增加而对互联网延迟造成的影响。该研究重点关注意大利，该国经历了地方当局实施的严格限制，但也包括了关于西班牙、法国、德国、瑞典和整个欧洲的结果。对大量测量数据的分析表明，对网络的影响可能是显著的，尤其是在延迟变异性增加方面。在意大利，我们观察到封锁期间平均额外延迟（即相对于该区域路径最小延迟的额外时间）的标准差约为大流行前数值的3-4倍。类似地，在意大利，丢包率约为大流行前的2-3倍。对于其他国家以及整个欧洲，这种影响也不容忽视，但具有不同的程度和明显的模式。
英文摘要：
The COVID-19 pandemic dramatically changed the way of living of billions of people in a very short time frame. In this paper, we evaluate the impact on the Internet latency caused by the increased amount of human activities that are carried out on-line. The study focuses on Italy, which experienced significant restrictions imposed by local authorities, but results about Spain, France, Germany, Sweden, and the whole of Europe are also included. The analysis of a large set of measurements shows that the impact on the network can be significant, especially in terms of increased variability of latency. In Italy we observed that the standard deviation of the average additional delay -- the additional time with respect to the minimum delay of the paths in the region -- during lockdown is ~3-4 times as much as the value before the pandemic. Similarly, in Italy, packet loss is ~2-3 times as much as before the pandemic. The impact is not negligible also for the other countries and for the whole of Europe, but with different levels and distinct patterns.
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