I'm working on an Internet of Things project and Tor will be a part of it (Hidden Services to be more precise). The nodes however may be battery powered or have slow (or metered) Internet connectivity, so I'm trying to estimate the traffic patterns for a fully functional Tor node. Has this been measured at all? I mean how much traffic should I expect per hour/day/month whatever in order to maintain a good "Tor citizen" node, serving a very low traffic hidden service? I do remember reading something about it needing 4MB per day or something like that, but I can't seem to find that link or page anywhere now... :(.

Any hints on where to find this type of info (or maybe how to measure it myself) would be appreciated. 

Thank you,

Razvan

--

Razvan Dragomirescu

Chief Technology Officer

Cayenne Graphics SRL