Hi Jesse, On 08/26/2014 03:47 PM, Jesse Victors wrote: > It seems to me that too many nodes under the same ISP is > problematic because it concentrates too much traffic in > the same AS, but on the other hand, Tor could use more exits. > More importantly, how many is too many nodes in the same /8, > or in the same /16? Where would you draw the line?
Very good question. Ideally, the Tor client would be AS-aware, and you would not have to worry about it. For the interested reader, see for example [1]. Until then, my thinking is that I compare to other locations. https://compass.torproject.org/ is very helpful for that: For example, if you group by AS, the largest AS right now (i3d, NL) in regards to exit capacity has 11%, and OVH tops the overall network at 10% consensus weight. As a rough rule, I'd avoid to push more than 1-2Gbit/s of traffic at one ISP. On the plus side, as long as you don't top the list, you're weighing down other locations. And universities are a preferred location. Make sure to use the MyFamily statement correctly: Unless relays are on the same /16, Tor might pick multiple of them for a circuit. Also, if you want to push more than ~100 Mbit/s on a single machine, you need AES-NI or run multiple relays, for more than 400 Mbit/s you need to run multiple relays in any case. The multi-relay initscript can be quite helpful for that. [1] http://freehaven.net/anonbib/#ccs2013-usersrouted [2] https://www.torservers.net/wiki/setup/server#multiple_tor_processes -- Moritz Bartl https://www.torservers.net/ _______________________________________________ tor-relays mailing list [email protected] https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-relays
