关键词：网络延迟；跨数据集；路径稳定性
摘 要：We leverage recent big-data techniques to develop a scalable data analysis toolkit, Hummus, that enables rapid and iterative analysis on large traceroute measurement datasets. Our key findings are: (1) overall latency seems to be decreasing; (2) some geographical regions still have poor latency; (3) route stability (prevalence and persistence) is increasing; and (4) we ob- serve a mixture of effects in the routing graph structure with high-degree ASes rapidly increasing in degree and lower- degree ASes forming denser “communities”.