Haskell GHC versus OCaml fastest programs Always look at the source code. These are only the fastest programs. Look at the other programs. They may seem more-like a fair comparison to you. regex-redux source secs mem gz busy cpu load Haskell GHC 0.97 308,028 2213 2.31 64% 46% 81% 47% OCaml 14.84 901,904 637 15.29 100% 0% 1% 1% mandelbrot source secs mem gz busy cpu load Haskell GHC 1.47 38,268 1975 5.82 99% 100% 99% 99% OCaml 7.56 4,620 717 30.12 100% 100% 99% 100% fasta source secs mem gz busy cpu load Haskell GHC 0.88 7,948 1882 2.87 81% 82% 81% 81% OCaml 3.27 203,380 1189 3.31 1% 0% 0% 100% spectral-norm source secs mem gz busy cpu load Haskell GHC 1.48 4,044 987 5.71 96% 96% 97% 96% OCaml 5.36 3,436 377 5.37 0% 0% 100% 0% pidigits source secs mem gz busy cpu load Haskell GHC 0.75 5,992 1694 0.76 0% 0% 1% 100% OCaml 0.74 6,144 593 0.78 0% 0% 100% 4% binary-trees source secs mem gz busy cpu load Haskell GHC 4.11 519,284 811 15.16 92% 89% 91% 97% OCaml 4.04 152,736 751 11.19 39% 77% 68% 93% n-body source secs mem gz busy cpu load Haskell GHC 6.95 4,196 1883 26.83 95% 95% 95% 100% OCaml 6.72 1,464 1251 6.76 0% 100% 0% 1% fannkuch-redux source secs mem gz busy cpu load Haskell GHC 10.22 3,620 1113 40.23 100% 100% 95% 99% OCaml 8.52 19,072 1004 34.08 100% 100% 100% 100% k-nucleotide source secs mem gz busy cpu load Haskell GHC 20.01 522,656 1059 73.95 90% 91% 95% 94% OCaml 14.87 255,560 1833 40.68 48% 50% 86% 90% reverse-complement source secs mem gz busy cpu load Haskell GHC 2.95 501,572 1020 3.51 6% 6% 6% 100% OCaml 1.66 34,044 1368 4.25 61% 65% 61% 69% Haskell GHC The Glorious Glasgow Haskell Compilation System, version 8.10.1 OCaml The OCaml native-code compiler, version 4.11.0 all Haskell GHC programs & measurements all OCaml programs & measurements