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 7.59 2,064 969 30.31 100% 100% 100% 100% Rust 7.61 1,200 1020 29.86 94% 100% 99% 99% pidigits source secs mem gz busy cpu load Go 1.00 8,952 683 1.04 0% 3% 99% 2% Rust 0.72 2,660 799 0.77 100% 0% 0% 7% fasta source secs mem gz busy cpu load Go 1.28 11,276 1404 3.78 65% 86% 81% 65% Rust 0.76 1,836 2529 1.53 99% 63% 38% 0% n-body source secs mem gz busy cpu load Go 6.38 1,896 1200 6.43 0% 100% 1% 0% Rust 3.42 872 1753 3.44 0% 100% 0% 0% spectral-norm source secs mem gz busy cpu load Go 1.44 2,356 548 5.71 99% 99% 99% 99% Rust 0.71 2,660 817 2.86 100% 100% 100% 100% k-nucleotide source secs mem gz busy cpu load Go 8.30 160,300 1607 31.96 96% 98% 96% 95% Rust 2.68 159,104 1691 10.03 92% 91% 100% 91% reverse-complement source secs mem gz busy cpu load Go 1.42 1,344,600 1338 2.66 57% 36% 71% 24% Rust 0.45 498,880 3040 0.76 61% 23% 60% 24% mandelbrot source secs mem gz busy cpu load Go 3.75 34,832 894 14.92 100% 99% 99% 100% Rust 0.93 32,648 763 3.70 99% 100% 100% 100% regex-redux source secs mem gz busy cpu load Go 3.94 323,252 810 6.14 74% 30% 19% 33% Rust 0.77 147,384 2458 2.00 55% 59% 55% 91% binary-trees source secs mem gz busy cpu load Go 12.80 385,036 1017 43.87 85% 87% 85% 86% Rust 1.02 198,720 765 3.64 87% 86% 85% 99% Go go version go1.16 linux/amd64 Rust rustc 1.53.0 (53cb7b09b 2021-06-17) LLVM version: 12.0.1 all Go programs & measurements all Rust programs & measurements