Magma - freeing memory, and preloading index

Hi, I've currently got 2 Million objects in a MagmaCollection. My memory use is 300MB.

I thought by doing
                maCollection add: entry.
                magmaSession stubOut: rating.


and periodically garbageCollecting, the entries would effectively be flushed to disk and release memory.
Am I misunderstanding? Is there another way to do this?


Also, I suspect loading is being slowed by dynamically creating the 2 indexes (indices?). Is there a way to pre-create these, in order, before adding the entries?

...Stan