The Computer Language
Benchmarks Game

Rust programs versus C gcc

by benchmark task performance

reverse-complement
source secs mem gz cpu cpu load
Rust 0.33 254,596 1324 0.62 31% 36% 100% 34%
C gcc 0.42 143,948 812 0.58 15% 26% 98% 2%
k-nucleotide
source secs mem gz cpu cpu load
Rust 5.20 155,200 1728 16.14 91% 54% 100% 71%
C gcc 5.38 129,772 1499 16.37 61% 82% 89% 74%
pidigits
source secs mem gz cpu cpu load
Rust 1.74 7,892 1420 1.74 100% 1% 2% 1%
C gcc 1.73 2,116 448 1.73 1% 99% 1% 0%
fasta
source secs mem gz cpu cpu load
Rust 1.48 20,252 1887 4.60 83% 76% 76% 77%
C gcc 1.33 2,856 2249 5.28 100% 99% 100% 99%
spectral-norm
source secs mem gz cpu cpu load
Rust 2.33 18,048 817 9.26 100% 100% 100% 100%
C gcc 1.99 1,824 1139 7.88 99% 99% 99% 100%
mandelbrot
source secs mem gz cpu cpu load
Rust 2.03 44,720 1332 8.00 99% 100% 99% 99%
C gcc 1.65 32,684 1135 6.53 99% 99% 100% 99%
fannkuch-redux
source secs mem gz cpu cpu load
Rust 11.21 20,064 1020 43.78 100% 100% 95% 97%
C gcc 8.97 1,660 910 35.00 98% 94% 99% 100%
n-body
source secs mem gz cpu cpu load
Rust 13.57 5,824 1474 13.56 1% 1% 100% 1%
C gcc 9.96 1,016 1490 9.95 1% 1% 1% 100%
binary-trees
source secs mem gz cpu cpu load
Rust 3.98 213,448 717 14.66 92% 90% 90% 100%
C gcc 2.38 131,728 836 7.70 98% 87% 73% 68%
regex-redux
source secs mem gz cpu cpu load
Rust 2.81 211,044 804 4.30 19% 100% 18% 19%
C gcc 1.45 155,768 1230 4.03 61% 64% 56% 100%
Rust

rustc 1.21.0 (3b72af97e 2017-10-09)

C gcc

gcc (Ubuntu 6.3.0-12ubuntu2) 6.3.0 20170406