Fastest cpu secs Go versus Rust Always look at the source code. If the fastest programs are hand-written vector instructions, does the host language matter? You might be more interested in the less optimised programs — more cpu seconds, less gz source code. fannkuch-redux source mem gz cpu Rust #6 1,372 1253 14.15 Rust #4 1,372 1020 30.06 Rust #3 1,336 1020 30.07 Rust #5 1,368 1016 30.11 Go #3 2,260 969 32.88 Go 2,956 900 47.36 Go #2 11,316 896 47.56 Rust #2 1,232 1191 72.42 n-body source mem gz cpu Rust #9 1,052 1874 2.89 Rust #7 1,052 1753 3.24 Rust #6 1,028 1790 4.05 Rust #3 1,108 1540 5.49 Rust #2 1,032 1805 5.67 Rust 1,044 1480 5.68 Rust #8 1,104 1767 5.78 Rust #5 1,104 2220 6.10 Rust #4 1,088 1803 6.25 Go #3 1,136 1200 6.38 Go 1,136 1310 6.58 Go #2 1,132 1215 6.94 spectral-norm source mem gz cpu Rust #5 2,560 1055 2.84 Rust #6 2,432 1126 2.84 Rust #7 2,436 932 2.84 Rust #4 2,640 817 2.84 Rust #2 1,312 1110 2.87 Rust 1,276 1254 2.87 Rust #3 1,248 1053 2.98 Go 2,452 411 5.33 Go #4 1,952 548 5.67 Go #2 1,420 668 5.68 mandelbrot source mem gz cpu Rust #6 33,872 1332 4.18 Rust #8 32,624 763 5.48 Rust #7 32,732 757 5.50 Rust #3 12,824 1007 5.52 Rust 38,672 868 6.87 Rust #5 33,948 719 10.40 Go #4 33,812 905 14.85 Go #3 34,028 894 14.91 Go 32,600 823 19.58 Go #2 33,196 837 27.07 Go #6 32,764 700 27.25 pidigits source mem gz cpu Rust #4 2,624 799 0.71 Rust #2 2,924 1306 0.74 Rust 2,928 1420 0.74 Rust #3 2,960 1366 0.83 Go #4 8,732 683 0.87 Go #3 9,320 603 1.18 Go 9,496 708 1.21 Go #2 9,032 733 1.59 Go #8 9,924 720 2.54 Go #7 8,620 696 5.05 regex-redux source mem gz cpu Rust #6 153,148 986 1.79 Rust #5 202,556 771 1.83 Rust 152,864 804 1.83 Rust #4 202,612 765 1.87 Rust #3 203,408 719 1.89 Rust #2 152,172 701 1.89 Rust #7 147,360 2458 1.99 Go #5 306,476 810 5.97 Go #4 355,844 829 34.99 Go #3 358,472 829 67.28 Go 297,048 741 68.45 fasta source mem gz cpu Rust #7 2,052 2529 1.52 Rust #3 1,104 1233 2.03 Rust #5 2,580 1961 3.10 Rust #2 2,580 1906 3.18 Rust #8 2,596 1946 3.55 Rust #4 123,860 939 3.57 Rust #6 123,848 955 3.58 Go 1,112 1053 3.64 Go #2 10,980 1404 3.84 Go #3 3,168 1358 3.98 Rust 1,100 1237 4.45 k-nucleotide source mem gz cpu Rust #7 131,236 1578 9.12 Rust #8 137,632 1543 10.39 Rust #6 159,088 1691 10.68 Rust #5 133,912 1739 12.23 Rust #2 137,896 1347 16.27 Rust #9 134,732 1841 18.77 Rust #4 136,216 1749 19.31 Go #7 159,432 1607 28.49 Go #6 149,712 1590 29.40 Go #4 144,528 1543 30.22 Go #3 149,984 1722 30.25 Rust 152,220 1078 70.04 reverse-complement source mem gz cpu Rust 499,068 3040 0.76 Rust #2 995,032 1330 1.36 Rust #3 995,032 1097 1.52 Go #2 826,796 611 1.94 Go #3 826,544 605 2.13 Go #5 1,483,756 996 2.26 Go #6 1,289,572 1338 2.48 Go Failed binary-trees source mem gz cpu Rust #5 198,536 765 3.60 Rust #2 200,024 721 4.17 Rust #4 181,444 756 4.40 Rust #3 163,904 754 4.87 Rust 132,604 751 7.70 Go #6 411,424 611 29.23 Go #2 632,396 666 48.67 Go #3 328,700 799 50.09 Go #5 394,800 950 50.52 Go 240,292 482 51.02 Go #7 259,088 525 51.41 Go go version go1.18 linux/amd64 Rust rustc 1.60.0 (7737e0b5c 2022-04-04) LLVM version: 14.0.0 all Go programs & measurements all Rust programs & measurements