[Haskell-cafe] ~1k memory per elem for FiniteMap!!!?
S. Alexander Jacobson
alex at alexjacobson.com
Tue Jan 25 12:41:26 EST 2005
Is it possible/reasonable that Data.FiniteMap
takes around 1k per element?
I just profiled this code:
zipped =zip [1..] [1..50000]
addFMItem (index,item) fm = (addToFM $! fm) item index
produce = foldr addFMItem emptyFM zipped
fm = take 1 $ keysFM produce
main = print $ fm
And it apparently consumes more than 45MB of heap
and won't run unless I give it at least 3M of
I assume I doing something wrong here, but have
no idea what it is.
S. Alexander Jacobson tel:917-770-6565 http://alexjacobson.com
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