> rsync over ssh works perfectly
I use rsync+ssh a lot, and it doesn't exactly work perfectly on long-distance 10-100 gigabit networks: ssh has a buffering problem at high bandwidths which the maintainers won't accept patches to fix.
I use rsync+ssh a lot, and it doesn't exactly work perfectly on long-distance 10-100 gigabit networks: ssh has a buffering problem at high bandwidths which the maintainers won't accept patches to fix.
Using scp or sftp would limit the transfer speed to a value several times lower than rsync in any case.
On short distance 10 Gb/s Ethernet I did not see problems, but it does not surprise me that on long-distance links they appear.
In such cases, if full speed is desired, it is likely that ssh must be replaced with either IPsec or a tunnel over TLS.
I don't know anyone in the HPC world who uses "IPsec or a tunnel over TLS".
This is interesting, can this be the reason for why playing 720p video in Firefox run with ssh and X11 forwarding is fine bandwidth-wise (easily 1Gb/s) but it causes responsiveness to mouse/keyboard actions to go into abysmal 5-30s territory?
Any references to the ssh buffering problem out there?