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 14.72 901,956 637 14.73 0% 100% 0% 0% mandelbrot source secs mem gz busy cpu load Haskell GHC 1.47 31,136 1975 5.83 99% 99% 99% 100% OCaml 7.49 4,940 717 29.88 100% 100% 99% 100% pidigits source secs mem gz busy cpu load Haskell GHC 0.89 6,048 1694 0.90 0% 100% 1% 0% OCaml 4.44 19,152 458 4.57 23% 79% 0% 1% fasta source secs mem gz busy cpu load Haskell GHC 0.86 8,008 1882 2.80 83% 80% 81% 81% OCaml 3.28 195,488 1189 3.30 1% 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 3,504 377 5.38 0% 0% 100% 0% n-body source secs mem gz busy cpu load Haskell GHC 6.95 4,188 1883 26.84 95% 95% 100% 95% OCaml 6.70 1,364 1251 6.78 100% 1% 0% 0% binary-trees source secs mem gz busy cpu load Haskell GHC 4.34 522,348 811 16.37 94% 97% 94% 93% OCaml 4.06 152,740 751 11.25 39% 73% 85% 80% fannkuch-redux source secs mem gz busy cpu load Haskell GHC 10.22 4,148 1113 40.27 100% 99% 100% 95% OCaml 8.86 19,588 1004 35.42 100% 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 14.99 255,568 1833 41.18 94% 99% 40% 42% 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 33,612 1368 4.26 61% 64% 69% 66% Haskell GHC The Glorious Glasgow Haskell Compilation System, version 8.10.1 OCaml The OCaml native-code compiler, version 4.10.0 all Haskell GHC programs & measurements all OCaml programs & measurements