Rust versus Go 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.

regex-redux
source	secs	mem	gz	busy	cpu load
Rust	2.12	153,184	986	3.15	15% 33% 85% 15%
Go	29.64	438,516	802	62.79	58% 57% 53% 44%
binary-trees
source	secs	mem	gz	busy	cpu load
Rust	3.37	199,768	721	12.27	88% 88% 100% 88%
Go	25.40	370,688	1005	87.09	86% 86% 86% 85%
n-body
source	secs	mem	gz	busy	cpu load
Rust	6.07	940	1753	6.14	1% 100% 0% 0%
Go	21.25	1,588	1310	21.43	0% 100% 0% 0%
mandelbrot
source	secs	mem	gz	busy	cpu load
Rust	1.70	30,424	1332	6.69	98% 98% 98% 99%
Go	5.47	31,104	905	21.78	99% 100% 99% 99%
k-nucleotide
source	secs	mem	gz	busy	cpu load
Rust	5.17	134,552	1841	15.74	71% 91% 63% 80%
Go	11.86	160,068	1607	44.82	93% 94% 97% 94%
reverse-complement
source	secs	mem	gz	busy	cpu load
Rust	1.62	994,820	1376	2.84	25% 26% 24% 100%
Go	3.55	1,783,340	1338	6.26	45% 32% 41% 59%
spectral-norm
source	secs	mem	gz	busy	cpu load
Rust	1.98	2,156	1126	7.93	100% 100% 100% 99%
Go	3.95	2,500	548	15.72	100% 99% 100% 99%
fannkuch-redux
source	secs	mem	gz	busy	cpu load
Rust	11.13	876	1020	43.78	99% 95% 100% 100%
Go	17.53	11,672	896	70.01	100% 100% 100% 100%
fasta
source	secs	mem	gz	busy	cpu load
Rust	1.51	2,036	1961	4.60	83% 74% 73% 75%
Go	2.07	3,568	1358	5.67	80% 75% 40% 79%
pidigits
source	secs	mem	gz	busy	cpu load
Rust	1.75	2,980	1366	1.78	0% 1% 1% 100%
Go	2.05	8,444	603	2.10	29% 1% 35% 37%
Rust	rustc 1.38.0 (625451e37 2019-09-23) LLVM version: 9.0
Go	go version go1.13 linux/amd64