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 3.61 374,916 810 5.95 47% 34% 20% 64% Java 5.70 656,328 929 18.25 89% 76% 79% 75% fannkuch-redux source secs mem gz busy cpu load Go 8.28 2,428 969 33.10 100% 100% 100% 100% Java 11.00 34,104 1282 43.42 99% 98% 98% 99% spectral-norm source secs mem gz busy cpu load Go 1.43 2,088 548 5.67 99% 99% 99% 99% Java 1.68 38,348 950 6.43 96% 96% 96% 95% mandelbrot source secs mem gz busy cpu load Go 3.75 34,848 894 14.94 99% 100% 99% 99% Java 4.11 68,204 796 16.20 98% 99% 98% 99% reverse-complement source secs mem gz busy cpu load Go 1.43 1,467,392 1338 2.67 48% 38% 55% 45% Java 1.54 702,332 2183 3.55 78% 46% 49% 57% fasta source secs mem gz busy cpu load Go 1.20 11,364 1404 3.67 80% 75% 73% 77% Java 1.27 43,968 2473 3.92 73% 95% 70% 70% n-body source secs mem gz busy cpu load Go 6.38 1,800 1200 6.44 0% 0% 0% 100% Java 6.75 35,200 1489 6.83 0% 0% 100% 1% pidigits source secs mem gz busy cpu load Go 0.86 8,980 683 0.88 2% 0% 0% 100% Java 0.79 35,568 764 0.84 99% 3% 3% 1% k-nucleotide source secs mem gz busy cpu load Go 8.29 160,156 1607 32.00 96% 96% 98% 96% Java 5.00 408,040 1812 16.36 74% 81% 86% 86% binary-trees source secs mem gz busy cpu load Go 12.65 431,720 1017 43.57 86% 85% 87% 86% Java 2.50 2,487,096 835 7.90 88% 75% 75% 79% Go go version go1.15.2 linux/amd64 Java openjdk 15 2020-09-15 OpenJDK Runtime Environment (build 15+36-1562) OpenJDK 64-Bit Server VM (build 15+36-1562, mixed mode, sharing) all Go programs & measurements all Java programs & measurements