The Computer Language
24.09 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 2.17 19,684 1582 8.56
C gcc #4 14.21 19,684 1190 14.21
Rust #6 3.88 19,804 1260 15.27
Rust #4 6.93 19,804 1026 27.20
C gcc #5 6.98 19,684 917 27.28
Rust #5 7.66 19,804 1023 29.90
Rust #2 9.15 19,804 1198 35.90
C gcc #3 39.56 19,684 574 39.56
C gcc 42.31 19,684 514 42.31
C gcc #2 10.85 19,684 1563 42.52
n-body
source secs mem gz cpu secs
C gcc #9 2.10 19,704 1639 2.10
Rust #9 2.19 19,804 1881 2.19
Rust #7 3.25 19,804 1759 3.24
Rust #2 3.94 19,804 1809 3.94
Rust #6 4.30 19,804 1796 4.30
C gcc #4 4.31 19,684 1496 4.31
Rust #8 4.49 19,804 1774 4.49
C gcc #6 4.97 19,684 1186 4.97
Rust #5 5.01 19,804 2224 5.01
Rust #4 5.10 19,804 1810 5.10
C gcc 5.18 19,684 1179 5.18
C gcc #2 5.20 19,684 1270 5.20
C gcc #3 5.24 19,684 1214 5.24
C gcc #5 5.43 19,684 1436 5.43
Rust 5.51 19,804 1483 5.51
Rust #3 5.57 19,804 1546 5.57
C gcc #7 6.82 19,684 1250 6.82
spectral-norm
source secs mem gz cpu secs
C gcc #6 0.39 19,724 1203 1.54
Rust #6 0.72 19,804 1132 2.85
Rust #4 0.72 19,804 823 2.85
Rust #5 0.72 19,804 1062 2.85
C gcc #4 0.72 19,724 1145 2.85
C gcc #7 0.72 19,724 906 2.85
C gcc #5 0.72 19,708 576 2.86
Rust #2 0.78 19,804 1117 2.98
Rust 0.77 19,804 1262 2.99
Rust #3 0.78 19,804 1060 3.00
C gcc 5.39 19,724 390 5.39
C gcc #3 1.43 19,708 470 5.70
Rust #7   Make Error  
C gcc #8   Make Error  
mandelbrot
source secs mem gz cpu secs
Rust #4 0.94 33,408 1301 3.73
Rust #8 1.06 33,408 770 4.22
Rust #6 1.08 34,048 1338 4.23
Rust #7 1.06 33,408 763 4.23
Rust #5 1.13 34,048 725 4.43
Rust #3 1.14 19,860 1013 4.54
C gcc #6 1.29 33,408 1147 5.13
C gcc #8 1.63 33,536 788 6.31
Rust 2.00 39,296 874 7.84
C gcc #4 3.49 33,152 805 13.88
C gcc #7 3.50 33,280 1000 13.91
C gcc 3.50 32,768 828 13.93
C gcc #3 3.53 32,768 769 14.09
C gcc #9 4.23 33,280 700 16.34
C gcc #2 25.05 19,684 412 25.04
pidigits
source secs mem gz cpu secs
Rust #4 0.71 19,804 804 0.71
Rust #3 0.74 19,804 1373 0.74
Rust 0.74 19,804 1426 0.74
Rust #2 0.74 19,804 1312 0.74
C gcc #2 0.82 19,704 422 0.82
C gcc 0.89 19,704 459 0.88
regex-redux
source secs mem gz cpu secs
Rust #6 1.18 154,096 994 1.44
Rust 1.33 153,792 811 1.58
Rust #5 1.34 203,224 777 1.58
Rust #2 1.34 153,776 707 1.60
Rust #4 1.35 199,548 771 1.61
Rust #3 1.36 202,908 726 1.61
Rust #7 0.78 149,888 2464 1.99
C gcc #5 0.81 152,392 1403 2.03
C gcc #2 3.21 103,296 1121 3.21
C gcc #4 0.95 152,248 1237 3.27
C gcc #3 1.73 103,680 1273 3.31
fasta
source secs mem gz cpu secs
C gcc #9 0.78 19,684 1469 0.78
C gcc #5 1.24 19,684 1286 1.24
Rust #7 0.77 19,804 2533 1.54
Rust #3 1.98 19,804 1235 1.97
C gcc #6 0.94 19,684 1936 2.77
C gcc #8 2.79 19,684 1299 2.79
C gcc #4 3.03 19,684 1244 3.03
Rust #2 0.92 19,932 1910 3.09
Rust #8 0.93 19,804 1952 3.14
Rust #5 0.94 19,932 1963 3.14
C gcc #2 0.82 19,684 2276 3.25
C gcc #7 0.84 19,684 2018 3.27
Rust #6 3.46 123,652 959 3.45
Rust #4 3.57 123,652 944 3.57
C gcc 3.74 19,684 1213 3.74
Rust 4.24 19,804 1240 4.24
C gcc #3 4.56 19,684 825 4.56
k-nucleotide
source secs mem gz cpu secs
Rust #7 2.84 133,840 1585 8.91
Rust #8 3.53 137,372 1549 10.47
Rust #6 2.96 159,600 1697 10.67
Rust #5 3.96 137,844 1745 11.95
C gcc 3.98 130,432 1512 12.93
Rust #2 6.28 138,736 1350 16.39
Rust #9 6.44 135,800 1850 17.00
Rust #4 6.74 137,440 1755 18.30
Rust 22.54 157,124 1086 67.38
reverse-complement
source secs mem gz cpu secs
C gcc #7 0.43 499,928 1899 0.59
C gcc #8 0.49 499,868 1551 0.81
Rust 0.53 498,816 2762 0.83
C gcc #6 0.97 696,664 828 1.39
C gcc #5 1.52 994,176 654 1.52
C gcc #2 1.05 994,560 757 1.57
Rust #2 0.98 995,200 1332 1.62
Rust #3 0.98 995,200 1105 1.68
C gcc #4 3.68 500,480 716 3.68
binary-trees
source secs mem gz cpu secs
Rust #5 1.08 198,656 771 3.77
Rust #2 1.22 199,684 729 4.29
C gcc #2 1.57 169,216 816 4.48
C gcc #3 1.92 134,400 842 4.70
Rust #4 1.33 187,948 765 4.80
Rust #3 1.40 188,740 762 5.06
Rust 2.05 132,992 760 7.21
C gcc 21.32 264,064 660 21.32
C gcc #5 8.66 351,232 914 31.56
Rust

1.80.1
(3f5fd8dd4
2024-08-06)
LLVM version: 18.1.7

C gcc

13.2.0-23ubuntu4