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