Release 1.1.8: intermittent OOM

[o2Stake]

Node crashed 3 times today (Oct 09) due to OOM, this node is usually stable. After the first OOM node stalled few blocks before the network height and I manually restarted. Crashed again after 3 hours, and later within 3 hours.

Oct 07 18:04:54 systemd[711]: mina.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
Oct 09 09:25:56 systemd[711]: mina.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
Oct 09 10:06:45 systemd[711]: mina.service: Main process exited, code=exited, status=130/n/a
Oct 09 13:07:31 systemd[711]: mina.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
Oct 09 15:48:57 systemd[711]: mina.service: Main process exited, code=exited, status=2/INVALIDARGUMENT

Ubuntu 18.04 64bit / Linux 4.15.0-156-generic
AMD EPYC 7282 16-Core Processor
64GB RAM

Logs: https://ufile.io/529tsr2w