On Wed, Jul 23, 2008 at 11:10 AM, Corey O'Connor
I still have two questions after all this: - Can I get a Haskell implementation as fast as the Perl? - What do I need to do to get GHC's profiler to provide me usable information? Telling me that 98% of the time was in "main" is not very enlightening ;-)
Don did a great job answering teh first question. To get better profiling information, add "SCC" annotations to your code. That will tell you how much time is spent in a particular expression. For your main function, take a divide and conquer approach - add SCCs to determine what is taking the most time. Take Don's advice first though before benchmarking - you probably won't care after switching to bytestring & a better regex engine. Justin