Erlang versus Java fastest programs Always look at the source code. These are only the fastest programs. Do some of them use manually vectorized SIMD? Look at the other programs. They may seem more-like a fair comparison to you. binary-trees source secs mem gz busy cpu load Erlang 5.19 419,540 478 15.94 71% 74% 81% 81% Java 2.48 1,722,848 835 7.88 98% 75% 71% 74% regex-redux source secs mem gz busy cpu load Erlang 36.11 3,894,284 1048 55.97 21% 25% 38% 70% Java 5.58 985,696 929 18.26 81% 77% 84% 85% fannkuch-redux source secs mem gz busy cpu load Erlang 72.42 36,916 1038 288.18 99% 99% 100% 100% Java 10.64 35,192 1282 41.91 99% 98% 99% 97% spectral-norm source secs mem gz busy cpu load Erlang 11.49 47,708 747 45.25 98% 98% 98% 99% Java 1.63 39,304 756 6.22 95% 97% 95% 95% pidigits source secs mem gz busy cpu load Erlang 7.74 51,716 562 9.23 52% 10% 49% 8% Java 0.93 36,552 764 0.98 2% 3% 1% 99% mandelbrot source secs mem gz busy cpu load Erlang 44.66 67,152 792 178.29 100% 100% 100% 100% Java 4.15 69,136 796 16.29 98% 99% 98% 99% n-body source secs mem gz busy cpu load Erlang 100.57 37,616 1399 101.23 0% 100% 0% 0% Java 6.74 35,844 1489 6.82 1% 100% 1% 0% k-nucleotide source secs mem gz busy cpu load Erlang 74.78 867,508 937 212.13 58% 62% 68% 96% Java 4.98 356,904 1812 16.25 78% 76% 96% 76% fasta source secs mem gz busy cpu load Erlang 20.18 37,368 1164 21.56 1% 100% 3% 3% Java 1.21 44,620 2543 3.58 89% 75% 65% 68% reverse-complement source secs mem gz busy cpu load Erlang 160.43 5,740,024 630 172.96 40% 13% 27% 28% Java 1.54 670,924 2183 3.51 46% 56% 48% 79% Erlang Erlang/OTP 24 [erts-12.0] [source] [64-bit] [smp:4:4] [ds:4:4:10] [async-threads:1] [jit] Java openjdk 16 2021-03-16 OpenJDK Runtime Environment (build 16+36-2231) OpenJDK 64-Bit Server VM (build 16+36-2231, mixed mode, sharing) all Erlang programs & measurements all Java programs & measurements