Re: [Haskell-cafe] Program using 500MB RAM to process 5MB file

lucas@die.net.au writes:

I'm relatively new to haskell so as one does, I am rewriting an existing program in haskell to help learn the language.

However, it eats up all my RAM whenever I run the program.

This typically happens to me when I parse large files and either am a) using a parser that is too strict (like Luke says) or b) using a parser that is too lazy - or rather, it parses into a lazy data structure which is then populated with unevaluated thunks holding onto the input data. Also, you probably want memory profiling (+RTS -h and friends), not time profiling (+RTS -p). -k -- If I haven't seen further, it is by standing in the footprints of giants