The Computer Language
24.12 Benchmarks Game

Rust versus C gcc fastest performance

How the programs are written matters! 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 seconds, less gz source code.

fannkuch-redux
source secs mem gz cpu secs
* C gcc #6 2.14 19,704 1582 8.43
* C gcc #4 14.04 19,704 1190 14.03
* Rust #6 3.86 19,684 1260 15.17
Rust #4 6.92 19,684 1026 27.13
C gcc #5 7.29 19,704 917 28.25
Rust #5 7.45 19,684 1023 29.32
Rust #2 9.15 19,684 1198 35.91
C gcc #3 36.80 19,704 574 36.79
C gcc #8 39.33 19,492 483 39.32
C gcc 39.61 19,704 514 39.60
* C gcc #2 10.19 19,704 1563 39.99
n-body
source secs mem gz cpu secs
* C gcc #9 2.10 19,772 1639 2.10
* Rust #9 2.19 19,624 1881 2.19
* Rust #7 3.23 19,624 1759 3.23
Rust #3 3.46 19,624 1774 3.45
Rust #2 3.64 19,624 1809 3.64
* C gcc #4 4.05 19,772 1398 4.05
* Rust #6 4.36 19,624 1796 4.35
C gcc #6 4.97 19,772 1186 4.97
* Rust #5 5.01 19,624 2224 5.01
Rust #4 5.11 19,624 1810 5.11
C gcc #2 5.19 19,772 1270 5.19
C gcc #3 5.23 19,772 1214 5.23
C gcc 5.23 19,772 1179 5.23
* C gcc #5 5.43 19,772 1436 5.43
Rust 5.52 19,624 1483 5.52
C gcc #8 5.54 19,688 1195 5.54
C gcc #7 6.89 19,772 1250 6.88
spectral-norm
source secs mem gz cpu secs
* C gcc #6 0.40 19,772 1203 1.59
* Rust 0.72 19,632 1262 2.80
* Rust #2 0.72 19,632 1117 2.80
Rust #4 0.72 19,632 823 2.85
* Rust #5 0.72 19,632 1062 2.85
* Rust #6 0.72 19,632 1132 2.85
* C gcc #5 0.72 19,772 576 2.85
* C gcc #7 0.72 19,772 906 2.85
* C gcc #4 0.72 19,772 1145 2.85
* Rust #3 0.74 19,632 1060 2.86
C gcc #8 5.40 19,772 389 5.39
C gcc #3 1.43 19,772 470 5.70
* Rust #7   Make Error  
* C gcc #2   Make Error  
mandelbrot
source secs mem gz cpu secs
* Rust #4 0.95 33,392 1301 3.77
* Rust #6 1.07 34,152 1338 4.20
Rust #2 1.09 33,384 770 4.33
Rust #7 1.10 33,380 763 4.37
Rust #5 1.11 33,956 725 4.37
Rust #3 1.14 19,624 1013 4.54
* C gcc #6 1.28 33,400 1147 5.10
C gcc #5 1.63 33,512 788 6.31
Rust 2.00 39,404 874 7.88
* C gcc #4 3.52 33,060 805 13.89
* C gcc 3.49 32,864 828 13.92
* C gcc #7 3.51 33,276 1000 13.95
* C gcc #3 3.53 32,860 769 14.09
C gcc #9 4.07 33,128 700 15.70
C gcc #8 25.15 19,496 412 25.15
fasta
source secs mem gz cpu secs
C gcc #3 0.78 19,772 1469 0.78
C gcc #5 1.24 19,616 1286 1.24
* Rust #7 0.77 19,624 2533 1.54
Rust #3 1.98 19,624 1235 1.98
C gcc #2 2.77 19,772 1299 2.76
C gcc #6 0.94 19,772 1936 2.78
Rust #9 0.94 19,624 1952 3.22
C gcc #7 0.82 19,772 2276 3.24
Rust #5 0.93 19,624 1963 3.34
Rust #2 0.92 19,624 1910 3.40
Rust #6 3.46 123,848 959 3.46
Rust #4 3.47 123,848 944 3.46
C gcc 3.70 19,772 1213 3.70
Rust 4.25 19,624 1240 4.25
C gcc #8 8.06 19,776 839 8.06
C gcc #4   Make Error  
k-nucleotide
source secs mem gz cpu secs
Rust #7 2.67 133,824 1585 8.21
Rust #3 3.21 137,564 1549 9.51
Rust #6 2.80 159,764 1697 10.03
Rust #5 3.82 137,924 1745 11.17
C gcc 3.84 130,408 1512 12.45
Rust #2 5.87 138,292 1350 15.32
Rust #9 6.63 136,168 1850 17.12
Rust #4 6.73 137,308 1755 18.72
Rust 21.46 157,492 1086 66.75
reverse-complement
source secs mem gz cpu secs
* C gcc #7 0.44 499,992 1899 0.59
C gcc #9 0.48 500,032 1551 0.76
* Rust 0.53 498,952 2762 0.84
C gcc #6 0.96 675,260 828 1.36
C gcc #5 1.53 994,108 654 1.53
C gcc #2 1.06 994,536 757 1.58
Rust #2 0.95 995,220 1332 1.58
Rust #3 0.97 995,156 1105 1.69
* C gcc #4 3.70 500,452 716 3.69
binary-trees
source secs mem gz cpu secs
Rust #5 1.09 198,720 771 3.84
C gcc #2 1.53 169,284 816 4.18
Rust #2 1.19 199,796 729 4.21
C gcc #3 1.96 134,540 842 4.70
Rust #3 1.39 189,928 762 5.00
Rust #4 1.39 199,084 765 5.01
Rust 2.04 132,952 760 7.26
C gcc #8 21.08 285,544 607 21.08
C gcc 21.67 264,244 660 21.67
C gcc #5 8.77 351,332 914 31.93
pidigits
source secs mem gz cpu secs
Rust #4 0.71 19,624 804 0.71
C gcc #2 0.74 19,772 422 0.74
* Rust #3 0.74 19,624 1373 0.74
* Rust #2 0.74 19,624 1312 0.74
C gcc 0.74 19,772 459 0.74
* Rust 0.74 19,624 1426 0.74
regex-redux
source secs mem gz cpu secs
Rust #6 1.17 153,780 994 1.42
Rust 1.34 153,972 811 1.56
Rust #5 1.33 202,800 777 1.57
Rust #4 1.34 199,684 771 1.58
Rust #3 1.34 202,952 726 1.59
Rust #2 1.38 153,932 707 1.63
* Rust #7 0.78 148,924 2464 2.00
C gcc #5 0.81 152,500 1403 2.03
C gcc #2 3.21 103,288 1121 3.21
C gcc #4 0.97 152,264 1237 3.28
C gcc #3 1.72 103,736 1273 3.31
Rust

1.83.0
(90b35a623
2024-11-26)
LLVM version: 19.1.1

C gcc

gcc (Ubuntu 14.2.0-4ubuntu2) 14.2.0