Hi.
I have tried to compare performance of the g++ std::map versus the GHC
IntMap.
The test consists in adding 10000000 elements to an empty map.
Haskell code is here:
http://hpaste.org/fastcgi/hpaste.fcgi/view?id=2899
C++ code is here:
http://hpaste.org/fastcgi/hpaste.fcgi/view?id=2900
The execution time and CPU usage is almost the same.
However the C++ version requires 305 MB, the GHC version 617 MB.
gcc 4.3.2
ghc 6.8.2
on Debian Linux Lenny, i386.
Isn't really possible to optimize memory usage in cases like this?
I also tried with Data.HashTable:
http://hpaste.org/fastcgi/hpaste.fcgi/view?id=2902
but memory usage is 703 MB, and execution time is about 4.5 times slower!
Thanks Manlio Perillo
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