Hi all. Some days ago someone posted this url: http://www.bagley.org/~doug/shootout/ which is a page benchmarking a number of different languages and compilers where ghc is one of them. Some benchmarks lacked a haskell versions (and some still do) and so I decided to fill in some of the gaps. One benchmark turned out to give pretty remarkable results. It's the producer/consumer benchmark. I suggest you all take a look at it. The haskell version is six (SIX!!!) times faster than the c version. Hey, what's going on here? I would really like to hear some comments from our dear implementors. It should be noted that synchronisation is achieved by using slightly different kinds of primitives. But still... six times... I lift my hat of for the ghc-implementors. /Josef