[tor-relays] How to get client locale statistics without arm?

Hi,

I would like to know from which countries my nodes are mostly used. I tried to use arm for this but on high capacity relays arm eats the same cpu resources as the tor process it monitors, if the connection panel is activated. Switching to the connection panel lets arm often freeze. Is there another way to get country statistics from a node? Maybe something build in Tor?

Thanks,

Torland