[Haskell] memory management

[Nathan Ricci]

Hello,

      I'm interested in research relating to memory management in 
Haskell. I'm at the point where I don't know enough to have very 
specific questions, but I'm especially interested in garbage collection 
in Haskell, and any available statistics (such as, how long does a thunk 
typically live before its evaluated, after its evaluated?), or tools 
that would let me get that sort of information more easily. If any one 
could be so kind as to point me to relevant research papers or other 
documentation, it would be very much appreciated.

           --Nathan Ricci