Rust versus Go

How the programs are written matters! Always look at the source code.

If the fastest programs are flagged * possible hand-written vector instructions or "unsafe" or naked ffi, 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	cpu secs	mem	gz	make
* Rust #6	3.81	15.06	3,985	1260	11.92
Rust #4	6.94	27.12	3,985	1026	11.71
Rust #5	7.41	28.89	3,990	1023	11.79
Go #3	8.36	33.35	3,846	975	5.31
Rust #2	9.19	36.04—36.08	3,723	1198	11.14
Go #8	46.15	46.26—46.33	3,207	500	5.43
Go	12.27	49.09	4,903	906	5.41
Go #2	12.36	49.40	16,966	903	5.43
n-body
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
* Rust #9	2.19	1.90—3.09	3,023	1881	11.01
* Rust #7	3.24	3.24	2,937	1759	10.53
Rust #3	3.46	3.46	2,937	1774	10.62
Rust #2	3.65	3.65	3,031	1809	10.49
Rust #6	4.37	4.36—4.49	3,031	1796	10.86
* Rust #5	5.02	5.03	3,035	2224	10.61
Rust #4	5.13	4.99—5.53	3,039	1810	10.50
Rust	5.52	5.50—5.60	3,027	1483	10.84
Go #3	6.39	6.41	3,191	1207	5.43
Go	7.02	7.09—7.27	3,228	1316	5.36
Go #2	7.04	7.06	3,203	1222	5.35
Go #8	9.60	9.64	3,191	1224	5.47
spectral-norm
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
* Rust #6	0.72	2.85	3,981	1132	12.60
Rust #4	0.72	2.85	4,047	823	12.00
Rust #5	0.72	2.86	4,018	1062	11.30
* Rust #2	0.72	2.86	4,145	1117	11.00
* Rust	0.72	2.86	4,104	1262	11.75
* Rust #3	0.74	2.94	4,121	1060	10.92
Go #8	5.34	5.36	3,838	429	5.35
Go	5.34	5.36	4,059	417	5.35
Go #4	1.43	5.69	4,174	555	5.45
Go #2	1.51	5.70	4,317	674	5.56
Rust #7		Empty
mandelbrot
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Rust #4	0.95	3.78	35,598	1301	12.26
Rust #6	1.08	4.21	36,426	1338	12.65
Rust #7	1.10	4.34	35,906	763	12.32
Rust #2	1.10	4.36—4.52	35,754	770	12.80
Rust #5	1.12	4.38	36,311	725	12.27
Rust #3	1.15	4.57	14,615	1013	12.66
Rust	2.01	7.90	42,631	874	10.94
Go #4	3.77	15.02	37,970	912	5.49
Go #3	3.78	15.03	38,101	900	5.82
Go	5.04	20.05	35,787	829	5.40
Go #8	26.70	26.77	3,199	500	5.39
Go #2	6.87	27.32	35,549	843	5.69
Go #6	6.91	27.48	35,119	707	5.69
fasta
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
* Rust #7	0.78	1.55	4,772	2533	11.68
Rust #3	2.03	2.03	3,199	1235	10.95
Rust #9	0.94	3.20—3.33	5,534	1952	11.24
Rust #2	0.95	3.46—3.50	5,554	1910	11.45
Rust #5	0.94	3.48—3.53	5,554	1963	12.19
Rust #4	3.52	3.53	128,217	944	10.63
Rust #6	3.53	3.53	128,381	959	10.62
Go	3.74	3.76	3,207	1055	5.36
Go #2	1.27	4.08	12,644	1405	5.51
Go #3	1.52	4.10	5,095	1362	5.29
Rust	4.45	4.54—4.61	3,113	1240	11.09
Go #8	11.22	11.54—11.80	9,052	880	5.55
k-nucleotide
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Rust #7	2.57	8.13—8.39	139,088	1585	13.43
Rust #3	3.28	9.72—10.13	142,631	1549	11.91
Rust #6	2.79	10.06—10.15	165,048	1697	14.10
Rust #5	3.88	11.66—11.92	143,155	1745	12.40
Rust #2	6.00	15.71—16.24	142,946	1350	11.85
Rust #9	6.33	17.72—18.82	141,099	1850	14.41
Rust #4	6.69	18.00—18.74	142,090	1755	13.13
Go #7	7.58	28.83—29.08	168,186	1613	5.42
Go #3	8.20	29.98—30.69	150,413	1729	5.63
Go #6	8.30	30.22—30.75	150,442	1596	5.79
Go #4	9.27	32.00—35.21	144,650	1552	5.11
Go #8	61.38	62.37—62.83	558,379	752	5.20
Rust	21.08	64.42—65.12	161,219	1086	12.16
reverse-complement
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
* Rust	0.55	0.85	512,963	2762	11.72
Rust #2	1.01	1.61	1,022,128	1332	11.04
Rust #3	1.02	1.72	1,022,034	1105	11.45
Go #2	2.22	2.34—2.39	822,211	614	4.79
Go #3	2.50	2.62—2.66	821,985	609	4.88
Go #6	1.93	3.46—3.52	1,277,608	1340	4.77
Go #5		Bad Output
Go		Empty
binary-trees [ Contentious. Different approaches. ]
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Rust #5	1.07	3.84—4.01	139,121	771	1.28
Rust #2	1.17	4.16—4.25	140,157	729	12.50
Rust #4	1.38	4.98—5.02	202,686	765	12.32
Rust #3	1.40	5.15—5.26	172,392	762	11.90
Rust	2.10	7.44	137,417	760	11.36
Go #6	27.93	29.32—29.66	416,195	618	5.43
Go #2	14.21	56.45—56.55	635,613	672	5.41
Go #3	14.90	57.97—58.17	329,499	806	5.29
Go #5	14.68	57.76—58.07	386,056	957	5.41
Go	32.05	59.81—60.00	243,114	488	5.21
Go #7	32.57	61.40—61.53	241,345	531	5.30
pidigits [ Contentious. Different libraries. ]
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Rust #4	0.71	0.72	4,055	804	11.82
* Rust #2	0.75	0.75	4,387	1312	10.44
* Rust	0.75	0.75	4,243	1426	10.19
* Rust #3	0.75	0.75	4,510	1373	10.10
* Go #4	0.82	0.84	6,402	689	8.17
Go	1.15	1.22—1.31	7,533	715	11.71
* Go #3	1.17	1.35—1.49	6,885	610	8.50
Go #2	1.76	1.90—2.03	7,823	740	7.70
Go #6	2.47	2.48	10,703	727	5.59
Go #7	5.00	5.65	10,527	702	6.17
regex-redux [ Contentious. Different libraries. ]
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Rust #6	1.21	1.46	159,846	994	13.12
Rust #5	1.35	1.58	209,863	777	12.67
Rust	1.35	1.59—1.63	159,793	811	12.22
Rust #3	1.38	1.63	210,379	726	13.51
Rust #4	1.38	1.64	206,811	771	12.41
Rust #2	1.38	1.64	159,937	707	11.67
* Rust #7	0.78	2.00	157,442	2464	12.48
Go #5	3.23	5.40—5.44	297,800	817	8.13
Go #4	14.49	35.20—35.71	349,008	832	8.44
Go #3	25.15	61.72—63.46	336,585	836	5.60
Go	25.79	61.91—62.99	301,662	749	5.85
Rust	1.84.1 (e71f9a9a9 2025-01-27) LLVM version: 19.1.5
Go	go version go1.23.1 linux/amd64 GOAMD64=v2