Well I just restored %datahash usage to the rebuild of the script and it didn't leak. :) Kind of glad that's not it. I also just restored Data::Dump usage to the rebuild and am testing it now. We'll see if it goes down. I don't remember if I was using Data::Dump in the first place when I noticed the leak. Actually, yes. I remember now, I need Data::Dump to serialize the hash to pass it through a message queue to the database thread.