How to enable rlp_perl debugging.

Hello, My custom perl module (which using threads for accounting buffer) which works good but when load increases freeradius stops working with only message: Jun 3 16:21:38 radius systemd: radiusd.service: main process exited, code=killed, status=6/ABRT Jun 3 16:21:38 radius systemd: Unit radiusd.service entered failed state. Jun 3 16:21:38 radius systemd: radiusd.service failed. How to enable more verbouse debbug for rlm_perl or there is only way is to recompile rlm_perl with -g option?