Go versus Java 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 Go 6.84 340,376 810 9.43 30% 43% 13% 52% Java 10.31 644,560 740 31.47 72% 72% 92% 70% pidigits source secs mem gz busy cpu load Go 2.10 8,448 603 2.17 1% 48% 55% 0% Java 3.07 39,320 938 3.31 2% 5% 3% 98% mandelbrot source secs mem gz busy cpu load Go 5.47 31,088 905 21.77 100% 99% 99% 99% Java 6.83 79,108 796 26.86 97% 99% 99% 99% fasta source secs mem gz busy cpu load Go 2.08 3,560 1358 5.61 80% 37% 76% 78% Java 2.22 45,172 2473 5.99 61% 50% 98% 60% spectral-norm source secs mem gz busy cpu load Go 3.96 2,752 548 15.74 99% 99% 99% 99% Java 4.22 36,948 950 16.43 98% 97% 98% 96% n-body source secs mem gz busy cpu load Go 21.25 1,588 1310 21.82 2% 0% 100% 1% Java 21.93 35,408 1429 22.44 1% 0% 100% 1% fannkuch-redux source secs mem gz busy cpu load Go 14.79 1,532 969 58.94 100% 100% 100% 100% Java 14.33 34,888 1282 56.56 99% 98% 99% 98% reverse-complement source secs mem gz busy cpu load Go 3.83 1,782,940 1338 6.67 21% 74% 16% 62% Java 3.16 712,368 2183 7.08 65% 47% 42% 70% k-nucleotide source secs mem gz busy cpu load Go 11.77 160,184 1607 44.52 94% 98% 94% 92% Java 9.33 447,976 1812 29.36 73% 83% 82% 77% binary-trees source secs mem gz busy cpu load Go 26.46 572,836 1007 89.76 86% 84% 85% 85% Java 8.32 953,620 835 28.37 95% 87% 81% 77% Go go version go1.13 linux/amd64 Java openjdk 13 2019-09-17 OpenJDK Runtime Environment (build 13+33) OpenJDK 64-Bit Server VM (build 13+33, mixed mode, sharing) all Go programs & measurements all Java programs & measurements