Rust versus Go 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
	elapsed			Mean or 95% CI
source	secs	mem	gz	cpu secs
* Rust #6	3.81	4,137	1260	15.16—15.32
Rust #4	6.90	4,141	1026	27.12
Rust #5	7.47	3,985	1023	29.34
Go #3	8.36	3,846	975	33.35
Rust #2	9.16	3,985	1198	35.93
Go #8	46.15	3,207	500	46.27—46.33
Go	12.27	4,903	906	49.09
Go #2	12.36	16,966	903	49.40
n-body
	elapsed			Mean or 95% CI
source	secs	mem	gz	cpu secs
* Rust #9	2.19	3,195	1881	1.61—3.97
* Rust #7	3.24	2,937	1759	3.24
Rust #3	3.46	3,023	1774	3.46
Rust #2	3.65	3,019	1809	3.65
* Rust #6	4.36	3,019	1796	4.10—5.43
* Rust #5	5.02	3,027	2224	5.02
Rust #4	5.13	3,019	1810	4.83—6.12
Rust	5.52	3,019	1483	5.56—5.66
Go #3	6.39	3,191	1207	6.41
Go	7.02	3,228	1316	7.10—7.26
Go #2	7.04	3,203	1222	7.06
Go #8	9.60	3,191	1224	9.64
spectral-norm
	elapsed			Mean or 95% CI
source	secs	mem	gz	cpu secs
* Rust #6	0.72	4,293	1132	2.85
Rust #4	0.72	4,014	823	2.85
* Rust #5	0.72	3,981	1062	2.85
* Rust	0.72	4,276	1262	2.86
* Rust #2	0.73	4,264	1117	2.86
* Rust #3	0.74	4,010	1060	2.94
Go #8	5.34	3,838	429	5.36
Go	5.34	4,059	417	5.36
Go #4	1.43	4,174	555	5.69
Go #2	1.51	4,317	674	5.70
* Rust #7		Empty
mandelbrot
	elapsed			Mean or 95% CI
source	secs	mem	gz	cpu secs
* Rust #4	0.95	35,955	1301	3.78
* Rust #6	1.08	36,385	1338	4.22
Rust #2	1.10	36,016	770	4.34
Rust #5	1.12	36,549	725	4.38
Rust #7	1.11	35,934	763	4.38
Rust #3	1.15	14,008	1013	4.57
Rust	2.03	42,541	874	7.90
Go #4	3.77	37,970	912	15.02
Go #3	3.78	38,101	900	15.03
Go	5.04	35,787	829	20.05
Go #8	26.70	3,199	500	26.77
Go #2	6.87	35,549	843	27.32
Go #6	6.91	35,119	707	27.48
fasta
	elapsed			Mean or 95% CI
source	secs	mem	gz	cpu secs
* Rust #7	0.78	4,866	2533	1.55
Rust #3	1.98	2,933	1235	1.98
Rust #9	0.94	5,362	1952	3.22—3.29
Rust #5	0.94	5,505	1963	3.34—3.43
Rust #2	0.94	5,550	1910	3.45—3.49
Rust #6	3.48	128,033	959	3.48
Rust #4	3.48	128,160	944	3.48
Go	3.74	3,207	1055	3.76
Go #2	1.27	12,644	1405	4.08
Go #3	1.52	5,095	1362	4.10
Rust	4.49	2,990	1240	4.51—4.55
Go #8	11.22	9,052	880	11.56—11.78
k-nucleotide
	elapsed			Mean or 95% CI
source	secs	mem	gz	cpu secs
Rust #7	2.61	139,071	1585	8.25—8.47
Rust #3	3.24	141,701	1549	9.49—9.79
Rust #6	2.81	165,057	1697	10.18—10.41
Rust #5	3.82	143,118	1745	11.26—11.52
Rust #2	6.05	143,139	1350	15.56—16.02
Rust #9	6.58	140,845	1850	17.43—18.35
Rust #4	6.76	142,778	1755	18.85—19.78
Go #7	7.58	168,186	1613	28.84—29.07
Go #3	8.20	150,413	1729	30.03—30.65
Go #6	8.30	150,442	1596	30.25—30.72
Go #4	9.27	144,650	1552	32.19—35.02
Go #8	61.38	558,379	752	62.40—62.80
Rust	21.38	159,539	1086	65.42—66.28
reverse-complement
	elapsed			Mean or 95% CI
source	secs	mem	gz	cpu secs
* Rust	0.54	513,090	2762	0.85
Rust #2	0.99	1,022,960	1332	1.63
Rust #3	1.00	1,022,190	1105	1.73
Go #2	2.22	822,211	614	2.35—2.38
Go #3	2.50	821,985	609	2.62—2.66
Go #6	1.93	1,277,608	1340	3.47—3.52
Go #5		Bad Output
Go		Empty
binary-trees
	elapsed			Mean or 95% CI
source	secs	mem	gz	cpu secs
Rust #5	1.10	137,413	771	3.96—4.09
Rust #2	1.21	141,509	729	4.32—4.37
Rust #4	1.38	171,651	765	5.04—5.11
Rust #3	1.40	162,599	762	5.05—5.11
Rust	2.07	137,667	760	7.21—7.27
Go #6	27.93	416,195	618	29.34—29.64
Go #2	14.21	635,613	672	56.45—56.54
Go #3	14.90	329,499	806	57.99—58.16
Go #5	14.68	386,056	957	57.78—58.05
Go	32.05	243,114	488	59.82—59.99
Go #7	32.57	241,345	531	61.41—61.52
pidigits
	elapsed			Mean or 95% CI
source	secs	mem	gz	cpu secs
Rust #4	0.72	3,994	804	0.72
* Rust	0.75	4,239	1426	0.75
* Rust #2	0.75	4,243	1312	0.75
* Rust #3	0.75	4,481	1373	0.75
* Go #4	0.82	6,402	689	0.84
Go	1.15	7,533	715	1.23—1.30
* Go #3	1.17	6,885	610	1.36—1.48
Go #2	1.76	7,823	740	1.90—2.02
Go #6	2.47	10,703	727	2.48
Go #7	5.00	10,527	702	5.65
regex-redux
	elapsed			Mean or 95% CI
source	secs	mem	gz	cpu secs
Rust #6	1.18	160,154	994	1.43
Rust #5	1.34	210,186	777	1.58
Rust	1.33	160,023	811	1.57—1.60
Rust #4	1.35	206,840	771	1.60
Rust #3	1.36	210,850	726	1.59—1.64
Rust #2	1.39	160,625	707	1.64
* Rust #7	0.79	155,496	2464	2.01
Go #5	3.23	297,800	817	5.40—5.44
Go #4	14.49	349,008	832	35.23—35.68
Go #3	25.15	336,585	836	61.82—63.36
Go	25.79	301,662	749	61.97—62.93
Rust	1.83.0 (90b35a623 2024-11-26) LLVM version: 19.1.1
Go	go version go1.23.1 linux/amd64 GOAMD64=v2