Julia 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 Julia 3.04 439,520 766 5.17 4% 62% 5% 98% Java 10.27 635,500 740 29.42 74% 81% 55% 76% mandelbrot source secs mem gz busy cpu load Julia 2.64 224,160 619 9.34 86% 98% 85% 85% Java 6.84 76,008 796 26.90 99% 98% 98% 98% n-body source secs mem gz busy cpu load Julia 9.57 240,732 1112 10.20 2% 70% 32% 3% Java 21.85 34,112 1489 22.16 1% 0% 0% 100% fannkuch-redux source secs mem gz busy cpu load Julia 10.62 190,312 886 39.95 93% 92% 99% 93% Java 16.12 33,168 1282 63.71 100% 98% 99% 98% spectral-norm source secs mem gz busy cpu load Julia 2.79 179,764 521 9.07 75% 75% 76% 99% Java 4.15 36,428 950 16.26 98% 100% 98% 97% k-nucleotide source secs mem gz busy cpu load Julia 7.55 344,020 945 17.36 61% 41% 50% 78% Java 9.14 403,576 1812 29.10 87% 72% 74% 86% reverse-complement source secs mem gz busy cpu load Julia 3.03 671,492 522 3.54 5% 8% 6% 98% Java 3.27 714,144 2183 7.54 47% 60% 66% 58% pidigits source secs mem gz busy cpu load Julia 2.06 169,012 506 2.55 99% 6% 13% 6% Java 1.83 34,848 764 1.95 99% 1% 4% 2% fasta source secs mem gz busy cpu load Julia 2.93 363,468 1182 8.91 74% 79% 78% 73% Java 2.22 43,096 2473 6.10 67% 83% 45% 80% binary-trees source secs mem gz busy cpu load Julia 20.21 601,980 372 66.53 90% 78% 82% 79% Java 8.28 948,040 835 28.20 80% 84% 87% 90% Julia julia version 1.4.0 Java openjdk 14 2020-03-17 OpenJDK Runtime Environment (build 14+36-1461) OpenJDK 64-Bit Server VM (build 14+36-1461, mixed mode, sharing) all Julia programs & measurements all Java programs & measurements