I fixed the Angerwhale leak. The main problem was knowing where to look for the leak, but Alias++'s Devel::Leak::Object cleared things right up. I ran angerwhale like this: ANGERWHALE_EXIT_OK=1 perl -MDevel::Leak::Object=GLOBAL_bless script/angerwhale_server.pl -d Then I hit it a few hundred times to exaggerate the per-request leaks: ab -n 300 http://localhost:3000/ Then I told it to exit, so I co