[Haskell-cafe] [RFC] benchmarks of bytestrings, teaser

Don Stewart dons at galois.com
Sat Dec 15 14:59:43 EST 2007

> What do you think the relative speeds are of the six small haskell
> programs at the end of this email?
> All they do is read from stdin and count the number of spaces they see.
> There are two that use strict bytestrings, two that use lazy
> bytestrings, and two that use the standard Haskell strings.  Three use a
> recursive function with an accumulator parameter and three use a foldl
> with a lambda function.
> Say the fastest one takes the time 1.  How much time will the others
> take?
> And how about memory?  How much memory do you think they require?  Let's
> say we feed a 150MB(*) file into each of them, how many megabytes do you
> think they end up using (as seen from the OS, not in terms of how big
> the live heap is)?
> I'm going to post full benchmarks + analysis on Wednesday.

How are you compiling these programs, by the way?  ghc-6.8.2 -O2  ?
(-O2 is required for bytestrings :)

-- Don

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