Rust versus Go 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 Rust 1.08 198,580 765 3.81 85% 99% 86% 84% Go 12.80 385,036 1017 43.87 85% 87% 85% 86% regex-redux source secs mem gz busy cpu load Rust 0.77 145,284 2458 1.98 53% 90% 53% 60% Go 3.94 323,252 810 6.14 74% 30% 19% 33% mandelbrot source secs mem gz busy cpu load Rust 0.93 32,644 763 3.71 100% 100% 100% 100% Go 3.75 34,832 894 14.92 100% 99% 99% 100% reverse-complement source secs mem gz busy cpu load Rust 0.45 499,076 3040 0.95 24% 100% 24% 62% Go 1.42 1,344,600 1338 2.66 57% 36% 71% 24% k-nucleotide source secs mem gz busy cpu load Rust 2.68 159,112 1691 10.01 99% 91% 92% 92% Go 8.30 160,300 1607 31.96 96% 98% 96% 95% spectral-norm source secs mem gz busy cpu load Rust 0.71 2,568 1055 2.84 100% 99% 99% 100% Go 1.44 2,356 548 5.71 99% 99% 99% 99% n-body source secs mem gz busy cpu load Rust 3.42 840 1753 4.20 100% 16% 4% 4% Go 6.38 1,896 1200 6.43 0% 100% 1% 0% fasta source secs mem gz busy cpu load Rust 0.77 1,816 2529 1.53 99% 1% 0% 99% Go 1.28 11,276 1404 3.78 65% 86% 81% 65% pidigits source secs mem gz busy cpu load Rust 0.71 2,644 799 0.72 0% 0% 100% 1% Go 1.00 8,952 683 1.04 0% 3% 99% 2% fannkuch-redux source secs mem gz busy cpu load Rust 7.53 1,172 1020 29.57 99% 98% 100% 95% Go 7.59 2,064 969 30.31 100% 100% 100% 100% Rust rustc 1.52.0 (88f19c6da 2021-05-03) LLVM version: 12.0.0 Go go version go1.16 linux/amd64 all Rust programs & measurements all Go programs & measurements