I have two relays that started life about a month ago so we are sill in the "Lifecycle of a new relay" time frame. The differences in the two are physical location and ORPort. Both are on Digital Ocean VPS. 1cpu 1GB memory. Both are Debian 8.6 and tor 0.2.8.11
Relay 1 is located in San Francisco and ORPort port is set to: 9001
Relay 2 is located in Singapore and ORPort is set to 443
Bandwidth on both relays is: 3168 KBytes Rate/Burst
IPv6 is enabled on both.
Relay #1 gets quite a bit more traffic than relay #2. Usually 3-4 times more but sometimes even more according to atlas.torproject.org
I'm not much of a sys admin so I'm not sure how to calculate the data transfers accurately. I use arm and glances to get an idea. arm seems to way off on its 'average' report.
At some point in the future I will have a reason to restart these relays (software upgrades etc) so I'm wondering if the difference is due to location, ORPort or both. Then maybe I can get Singapore to be a little more efficient.
I also have a plan to install a bridge in the future and would possibly choose Singapore for location.
Added info: atlas reports 'Advertised Bandwidth' on relay #1 3.19 MB/s and relay #2 991.26 KB/s
Relay #1 3244032 / 3244032 / 334499 for Rate/Max/Observed in Bps
Relay #2 3244032 / 3244032 / 41903 for Rate/Max/Observed in Bps