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 7.13 1,176 1020 28.07 99% 95% 100% 99% pidigits source secs mem gz busy cpu load Go 1.00 8,952 683 1.04 0% 3% 99% 2% Rust 0.71 2,912 799 0.72 0% 100% 1% 0% fasta source secs mem gz busy cpu load Go 1.28 11,276 1404 3.78 65% 86% 81% 65% Rust 0.77 1,884 2529 1.53 0% 1% 99% 99% n-body source secs mem gz busy cpu load Go 6.38 1,896 1200 6.43 0% 100% 1% 0% Rust 3.32 844 1767 3.43 100% 3% 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 2,668 1055 2.85 100% 100% 99% 100% k-nucleotide source secs mem gz busy cpu load Go 8.30 160,300 1607 31.96 96% 98% 96% 95% Rust 2.75 159,068 1691 10.20 99% 90% 91% 91% reverse-complement source secs mem gz busy cpu load Go 1.42 1,344,600 1338 2.66 57% 36% 71% 24% Rust 0.45 499,100 3040 0.78 23% 24% 64% 61% mandelbrot source secs mem gz busy cpu load Go 3.75 34,832 894 14.92 100% 99% 99% 100% Rust 0.92 32,588 763 3.67 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 0.79 143,672 2458 1.99 53% 59% 52% 90% binary-trees source secs mem gz busy cpu load Go 6.73 299,572 701 26.34 98% 97% 98% 98% Rust 1.04 198,844 765 3.74 87% 86% 87% 100% Go go version go1.16 linux/amd64 Rust rustc 1.51.0 (2fd73fabe 2021-03-23) LLVM version: 11.0.1 all Go programs & measurements all Rust programs & measurements