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 0.97 308,072 2213 2.32 46% 51% 80% 62% OCaml 14.84 901,836 637 15.47 100% 3% 1% 0% mandelbrot source secs mem gz busy cpu load Haskell GHC 1.47 31,136 1975 5.83 99% 99% 99% 100% OCaml 7.55 4,944 717 30.12 100% 100% 100% 100% fasta source secs mem gz busy cpu load Haskell GHC 0.86 8,008 1882 2.80 83% 80% 81% 81% OCaml 3.26 188,324 1189 3.28 0% 0% 100% 0% spectral-norm source secs mem gz busy cpu load Haskell GHC 1.48 4,124 987 5.73 96% 97% 96% 98% OCaml 5.35 3,428 377 5.38 0% 100% 0% 0% pidigits source secs mem gz busy cpu load Haskell GHC 0.89 6,048 1694 0.90 0% 100% 1% 0% OCaml 0.88 5,868 593 0.98 1% 100% 2% 8% n-body source secs mem gz busy cpu load Haskell GHC 6.95 4,188 1883 26.84 95% 95% 100% 95% OCaml 6.71 1,324 1251 6.74 100% 0% 0% 0% binary-trees source secs mem gz busy cpu load Haskell GHC 4.34 471,032 799 15.56 96% 88% 87% 87% OCaml 4.06 152,700 751 11.16 55% 54% 84% 82% fannkuch-redux source secs mem gz busy cpu load Haskell GHC 10.22 4,148 1113 40.27 100% 99% 100% 95% OCaml 8.51 19,400 1004 33.97 100% 100% 100% 100% k-nucleotide source secs mem gz busy cpu load Haskell GHC 20.11 522,844 1059 74.17 94% 90% 95% 91% OCaml 15.08 255,464 1833 40.16 40% 36% 96% 95% reverse-complement source secs mem gz busy cpu load Haskell GHC 2.92 501,644 1020 3.43 6% 100% 6% 6% OCaml 1.64 33,620 1368 4.25 63% 62% 68% 65% 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