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- https://isc.sans.edu/forums/diary/Ping+is+Bad+Sometimes/11335/
- http://www.tomshardware.com/answers/id-3023937/icmp-latency-tcp-latency.html
- https://networkengineering.stackexchange.com/questions/35376/how-to-find-out-tcp-udp-latency-of-your-network
The concerns are that ICMP/ping RTT measurements are not representative of TCP RTTs since both the ISPs and the end-node sites de-priortitize ICMP compared to TCP and UDP based applications.
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