C++ g++ versus Rust fastest programs by faster benchmark performance k-nucleotide source secs mem gz cpu cpu load C++ g++ 3.73 156,080 1624 11.60 75% 70% 72% 96% Rust 5.41 137,908 1749 17.41 77% 89% 57% 100% n-body source secs mem gz cpu cpu load C++ g++ 9.42 1,704 1763 9.41 2% 100% 1% 0% Rust 13.27 1,796 1805 13.26 0% 1% 1% 100% regex-redux source secs mem gz cpu cpu load C++ g++ 1.83 203,520 1315 4.41 50% 45% 100% 49% Rust 2.44 205,624 765 3.86 11% 91% 0% 59% binary-trees source secs mem gz cpu cpu load C++ g++ 3.68 119,052 809 11.93 98% 76% 77% 78% Rust 4.11 175,320 721 15.08 100% 90% 90% 90% fasta source secs mem gz cpu cpu load C++ g++ 1.33 1,740 2711 4.29 81% 81% 81% 82% Rust 1.47 3,032 1906 4.97 83% 84% 83% 90% spectral-norm source secs mem gz cpu cpu load C++ g++ 1.98 1,164 1044 7.87 99% 99% 99% 100% Rust 1.98 2,460 1126 7.87 100% 99% 99% 99% fannkuch-redux source secs mem gz cpu cpu load C++ g++ 10.12 1,852 980 39.95 100% 100% 96% 100% Rust 10.01 1,864 1020 39.03 100% 92% 99% 100% mandelbrot source secs mem gz cpu cpu load C++ g++ 1.81 29,072 1002 7.10 98% 98% 98% 100% Rust 1.75 33,800 1332 6.86 98% 98% 100% 98% pidigits source secs mem gz cpu cpu load C++ g++ 1.89 4,272 513 1.89 1% 3% 100% 2% Rust 1.74 4,412 1366 1.74 1% 100% 1% 1% reverse-complement source secs mem gz cpu cpu load C++ g++ 2.93 980,716 2280 4.52 51% 23% 33% 51% Rust 1.61 995,072 1376 2.71 24% 31% 95% 24% C++ g++ g++ (Ubuntu 8.2.0-7ubuntu1) 8.2.0 Rust rustc 1.31.0 (abe02cefd 2018-12-04) LLVM version 7.0.0 all other C++ g++ programs & measurements