Am 04-Feb-18 um 17:13 schrieb starlight.2017q4@binnacle.cx:

After many crashes and much pain, I determined that having CellStatistics enabled causes a busy relay to consume at least two or three _gigabytes_ of additional memory. Relay operators with less than 16GB per instance are advised to disable it.

Thank you so much. I went crazy about sudden deaths of relays too.

CellStatistics can be turned off without restarting, via the control-channel command setconf CellStatistics=0

Without control-command one has to restart the service -- Cheers, Felix