On 22/07/2009 02:51, Neal Alexander wrote: > Neal Alexander wrote: >> Compiled with "ghc -O2 -fvia-C -optc-O2 -funbox-strict-fields >> -threaded" btw. > > GHC 6.10.3 on 64bit windows7. Interesting. It's completely flat on Linux, but gobbles up about 1MB/s on Windows. I'm investigating. Cheers, Simon