I was directed to this thread by another person while discussing transfer speed across the internet today and was wondering if anyone has any comment on it.
Some specific posts made by a FileZilla developer piqued my interest. See here and here.
I remember reading a thread here recently discussing how theoretically impossible it was for a single TCP stream to go faster than a particular speed due to constraints like latency among other things.
I would imagine that the developer was likely testing in perfect conditions, a completely uncontested link both locally and at the destination as well as good routing in between but the distance was still transatlantic (20+ hops)...
Has anyone here seen speeds like that using a single TCP thread of any kind, not just FTP?
The best I have achieved is with sftp and was ~2.9MiB/s. Is this developer smoking something odd or is he correct that there is an underlying problem with congestion globally?
A well routed VPS I test with based in the US is roughly 10 hops from me and even taking in to account an ISP with plenty of capacity and a good home network configuration there is no hope I would even reach 2Mbit/s for a single stream via FTP/sftp/HTTP.