Python makes all that analysis seem trivial to do, and you make python look easy.

The CacheEntry graph increases, are you sure it's not just a fault in the server configuration? I'm not precisely sure of your setup but could it just be filling out it's defined cache limits?

Some of these debug modules are quite neat and I'm sure I'll find use of them in the future.

Yep, it's quite possible the "leak" is just caching, although it's using far more memory than I expect it to