Thus spake Tim Wilde (twilde@cymru.com):
I try to keep everything I do documented on that wiki. All these servers run four instances of Tor each (one per core) and traffic is accounted for in total. Also, keep in mind that vnstat counts both incoming and outgoing traffic, so 700Mbps in vnstat are really only 375 per direction.
Ah, okay, thanks for the clarification, I was thinking those numbers were for single Tor instances. That makes me feel a lot better then, especially with the combination of directions. :) I'm pushing around 600Mb/sec total in+out on my piece of bit iron so I'm much closer to the same ballpark than I thought. Thanks, and thanks again for your documentation!
Moritz, Andy, Tim, and others with Gbit+ Guards and/or Exits:
Could you guys ensure you are not running into TCP socket exhaustion on any of your relays? It is a possibility, esp for Guard+Exits with gobs of CPU and gobs of throughput.
I am curious if we will need to do this or not: https://trac.torproject.org/projects/tor/ticket/4709