[atlas] DNS RTT over TCP: twice as long than UDP?
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Philip Homburg
philip.homburg at ripe.net
Fri Jul 5 15:20:04 CEST 2019
On 2019/07/05 14:33 , Giovane Moura wrote: > https://atlas.ripe.net/results/maps/root-server-performance/ > > By definition, however, RTT is "the length of time it takes for a > signal to be sent plus the length of time it takes for an > acknowledgement of that signal to be received."[2]. So if DNS TCP > measurements starts measuring from the SYN packet, that', in fact, be > two RTTs. Is this the case with Atlas? The use of RTT on that page is wrong. The DNS measurement reports response time. Philip
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