Erlang HiPE versus Ruby 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. spectral-norm source secs mem gz busy cpu load Erlang HiPE 16.73 34,356 747 64.19 97% 95% 95% 97% Ruby 154.65 26,296 839 603.60 98% 98% 97% 97% binary-trees source secs mem gz busy cpu load Erlang HiPE 8.33 468,264 478 25.17 76% 83% 71% 72% Ruby 44.67 531,624 1096 126.74 79% 60% 73% 72% fannkuch-redux source secs mem gz busy cpu load Erlang HiPE 84.89 24,188 1038 337.93 99% 100% 99% 100% Ruby 307.68 26,776 1444 1,190.76 98% 95% 96% 98% mandelbrot source secs mem gz busy cpu load Erlang HiPE 109.96 51,676 792 439.44 100% 100% 100% 100% Ruby 340.43 65,964 931 1,353.94 100% 99% 99% 99% n-body source secs mem gz busy cpu load Erlang HiPE 191.97 24,504 1399 204.49 37% 33% 26% 11% Ruby 376.42 25,112 1137 401.06 92% 2% 4% 9% fasta source secs mem gz busy cpu load Erlang HiPE 48.18 24,632 1164 52.97 6% 51% 49% 4% Ruby 51.46 122,960 1069 57.67 20% 22% 47% 23% reverse-complement source secs mem gz busy cpu load Erlang HiPE 41.88 2,600,884 1302 115.39 74% 77% 62% 62% Ruby 31.78 511,692 264 34.71 5% 54% 47% 4% k-nucleotide source secs mem gz busy cpu load Erlang HiPE 144.25 757,756 937 407.46 91% 66% 62% 63% Ruby 106.07 145,640 644 387.67 92% 93% 87% 93% regex-redux source secs mem gz busy cpu load Erlang HiPE 60.01 2,136,672 1048 101.58 39% 41% 36% 53% Ruby 15.85 277,116 724 35.00 93% 39% 41% 48% pidigits source secs mem gz busy cpu load Erlang HiPE 16.33 27,624 562 17.76 9% 4% 3% 93% Ruby 3.21 369,020 485 5.35 21% 31% 15% 100% Erlang HiPE Erlang/OTP 22 [erts-10.7] [source] [64-bit] [smp:4:4] [ds:4:4:10] [async-threads:1] [hipe] Ruby ruby 2.7.0p0 (2019-12-25 revision 647ee6f091) [x86_64-linux] --jit all Erlang HiPE programs & measurements all Ruby programs & measurements