“Look, Ma, no probes!” — Characterizing CDNs’ latencies with passive measurement

4 · Cloudflare · Oct. 15, 2021, 1:06 p.m.
A challenge with measuring and comparing network performance is the lack of large-scale global performance metrics, like RTT measurements. In this article we describe an alternative approach to active measurements, which accurately predicts network latencies using only passively collected data....