Álvaro Ramírez
Speeding up Emacs tramp via ControlMaster
Via Florian Margaine's Eshell config, I discovered ssh's ControlMaster. It enables sharing multiple sessions over a single network connection. This has the benefit of speeding up Emacs TRAMP.
In your ~/.ssh/config add:
Host * ControlPath ~/.ssh/master-%h:%p ControlMaster auto ControlPersist 10m