Go versus Rust 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. fannkuch-redux source secs mem gz busy cpu load Go 8.31 2,316 969 33.23 100% 100% 100% 100% Rust 7.54 1,200 1020 29.78 97% 100% 99% 99% pidigits source secs mem gz busy cpu load Go 1.00 8,808 683 1.03 2% 1% 45% 55% Rust 0.71 3,044 799 0.73 1% 0% 1% 100% fasta source secs mem gz busy cpu load Go 1.26 11,480 1404 3.89 79% 89% 70% 71% Rust 0.77 1,840 2529 1.59 66% 100% 4% 38% n-body source secs mem gz busy cpu load Go 6.38 1,604 1200 6.42 0% 100% 0% 0% Rust 3.29 1,196 1753 3.33 0% 100% 1% 0% spectral-norm source secs mem gz busy cpu load Go 1.43 2,208 548 5.68 99% 99% 100% 99% Rust 0.72 2,672 1055 2.86 100% 100% 100% 99% k-nucleotide source secs mem gz busy cpu load Go 7.46 160,328 1607 28.71 98% 95% 95% 97% Rust 2.70 159,048 1691 10.08 93% 92% 91% 99% reverse-complement source secs mem gz busy cpu load Go 1.35 1,560,228 996 2.24 24% 35% 10% 99% Rust 0.45 498,964 3040 0.77 25% 23% 100% 25% mandelbrot source secs mem gz busy cpu load Go 3.73 34,192 905 14.85 99% 99% 99% 100% Rust 0.93 32,676 763 3.70 100% 99% 100% 100% regex-redux source secs mem gz busy cpu load Go 3.85 324,200 810 6.01 27% 19% 20% 91% Rust 0.77 147,524 2458 1.99 54% 59% 91% 54% binary-trees source secs mem gz busy cpu load Go 12.23 392,744 1017 41.62 83% 87% 85% 85% Rust 1.09 198,728 765 3.90 87% 98% 88% 86% Go go version go1.17 linux/amd64 Rust rustc 1.55.0 (c8dfcfe04 2021-09-06) LLVM version: 12.0.1 all Go programs & measurements all Rust programs & measurements