Already done.
You can see a current list of the commits here (just in case you didn't know
)
http://code.google.com/p/mc-server/source/list
RAM usage: It might have something to do with my machine being quadcore, so the generation and saving run in parallel. Also I've been testing some generator-related things, so I limited the generated stuff to minimum, which made the generator run about three times faster. Or maybe it's because of it being a Debug build. Who knows.
You can see a current list of the commits here (just in case you didn't know

http://code.google.com/p/mc-server/source/list
RAM usage: It might have something to do with my machine being quadcore, so the generation and saving run in parallel. Also I've been testing some generator-related things, so I limited the generated stuff to minimum, which made the generator run about three times faster. Or maybe it's because of it being a Debug build. Who knows.