The Computer Language
Benchmarks Game

Go versus C gcc fastest programs

Back in April 2010, Russ Cox charitably suggested that only fannkuch-redux, fasta, k-nucleotide, mandlebrot, nbody, reverse-complement and spectral-norm were close to fair comparisons. As someone who implemented programming languages, his interest was "measuring the quality of the generated code when both compilers are presented with what amounts to the same program."

Differences in approach - to memory management, parallel programming, regex, arbitrary precision arithmetic, implementation technique - don't fit in that kind-of fair comparison — but we still have to deal with them.

These are only the fastest programs. There may be additional measurements for programs which seem more-like a fair comparison to you. Always look at the source code.

pidigits
source secs mem gz busy cpu load
Go 2.10 8,448 603 2.17 1% 48% 55% 0%
C gcc 1.75 2,812 452 1.79 100% 0% 2% 1%
fasta
source secs mem gz busy cpu load
Go 2.08 3,560 1358 5.61 80% 37% 76% 78%
C gcc 1.46 2,992 2268 5.81 99% 99% 99% 99%
k-nucleotide
source secs mem gz busy cpu load
Go 11.77 160,184 1607 44.52 94% 98% 94% 92%
C gcc 6.00 130,132 1506 18.48 70% 95% 89% 53%
spectral-norm
source secs mem gz busy cpu load
Go 3.94 2,740 548 15.74 100% 100% 100% 100%
C gcc 1.98 1,224 569 7.88 99% 99% 99% 100%
fannkuch-redux
source secs mem gz busy cpu load
Go 17.56 1,524 900 70.00 100% 100% 100% 100%
C gcc 8.75 948 910 34.50 100% 100% 100% 95%
reverse-complement
source secs mem gz busy cpu load
Go 3.83 1,782,940 1338 6.67 21% 74% 16% 62%
C gcc 1.90 533,424 820 2.58 6% 20% 10% 99%
n-body
source secs mem gz busy cpu load
Go 21.25 1,588 1310 21.48 0% 1% 100% 0%
C gcc 7.30 8 1391 7.37 0% 0% 100% 1%
mandelbrot
source secs mem gz busy cpu load
Go 5.47 31,088 905 21.77 100% 99% 99% 99%
C gcc 1.64 26,504 1135 6.54 100% 100% 99% 100%
regex-redux
source secs mem gz busy cpu load
Go 6.84 340,376 810 9.43 30% 43% 13% 52%
C gcc 1.48 152,188 1397 3.44 46% 45% 100% 41%
binary-trees
source secs mem gz busy cpu load
Go 25.17 361,152 1005 86.86 87% 89% 86% 84%
C gcc 3.53 168,844 809 11.76 98% 75% 86% 74%
Go

go version go1.13 linux/amd64

C gcc

gcc (Ubuntu 9.2.1-9ubuntu2) 9.2.1 20191008