I'm just started using of beaver on my production servers. I use upstart (https://github.com/josegonzalez/beaver/blob/master/contrib/beaver-upstart.conf) script for running beaver in background mode. The first time I just started beaver it took around 2% of RAM memory but after 3-5 days it takes 5% - 10% - 19%. It seems there is memory leaks. How can I detect and fix them?