Java 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
source	secs	mem	gz	cpu secs
Go #3	8.34	19,808	975	33.31
Java #3	39.96	44,308	1264	40.06
Java	10.85	44,612	1289	42.80
Java #2	45.77	42,552	520	45.83
Java #8	45.90	42,568	517	45.97
Go #8	46.13	19,440	500	46.24
Go	12.29	19,808	906	49.04
Go #2	12.35	19,808	903	49.32
n-body
source	secs	mem	gz	cpu secs
Go #3	6.38	19,808	1207	6.40
Java #4	6.88	42,028	1495	6.91
Go	7.01	19,808	1316	7.03
Go #2	7.03	19,808	1222	7.05
Java #5	7.30	43,424	1435	7.36
Java #2	7.48	42,260	1430	7.52
Java #3	7.49	42,292	1436	7.52
Java #8	7.59	42,924	1322	7.64
Java	7.84	42,652	1437	7.88
Go #8	9.60	19,436	1224	9.62
spectral-norm
source	secs	mem	gz	cpu secs
Go #8	5.33	19,416	429	5.34
Go	5.33	19,808	417	5.34
Java #8	5.43	43,368	453	5.49
Go #2	1.50	19,808	674	5.68
Go #4	1.45	19,808	555	5.69
Java #3	1.57	44,160	762	5.93
Java #2	1.61	43,028	956	6.08
mandelbrot
source	secs	mem	gz	cpu secs
Go #4	3.76	35,456	912	14.99
Go #3	3.77	35,456	900	15.00
Java #2	4.08	82,216	802	16.06
Java #4	4.41	105,000	667	16.14
Java #6	4.19	82,232	808	16.42
Go	5.02	33,024	829	20.02
Java	24.50	42,272	671	24.57
Go #8	26.68	19,440	500	26.74
Go #2	6.85	33,152	843	27.28
Go #6	6.89	33,024	707	27.44
Java #3	6.96	82,972	910	27.54
Java #8	27.67	45,844	441	27.79
fasta
source	secs	mem	gz	cpu secs
Java #4	3.28	44,352	1528	3.40
Java #6	1.16	49,848	2549	3.71
Go	3.73	19,808	1055	3.74
Go #2	1.27	19,808	1405	4.06
Go #3	1.51	19,808	1362	4.09
Java #5	1.24	49,640	2478	4.13
Java #2	4.45	48,896	1259	4.60
Java #8	15.11	77,032	894	15.49
Go #8	18.27	19,440	838	18.46
k-nucleotide
source	secs	mem	gz	cpu secs
Java	4.92	427,448	1821	15.77
Java #6	7.27	426,032	1614	25.17
Java #3	7.34	426,540	1642	25.47
Go #7	7.63	163,072	1613	28.79
Go #3	8.18	145,280	1729	29.88
Go #6	8.21	145,152	1596	30.01
Go #4	9.16	140,032	1552	31.38
Java #4	34.33	197,748	1887	34.67
Java #5	22.10	222,396	2225	48.14
Java #8	78.46	2,083,000	786	80.86
reverse-complement
source	secs	mem	gz	cpu secs
Go #2	2.19	800,640	614	2.29
Go #3	2.48	800,384	609	2.57
Go #6	1.91	1,244,508	1340	3.40
Java #6	3.15	2,032,996	760	3.79
Java #5	4.72	1,097,732	1115	4.84
Java #4	5.65	1,891,656	656	5.77
Java #7	23.98	1,037,708	1654	6.26
Go #5		Bad Output
Go		Failed
Java #3		Bad Output
binary-trees
source	secs	mem	gz	cpu secs
Java #4	4.41	1,821,244	846	5.14
Java #6	4.87	1,782,568	535	5.63
Java #3	4.85	1,769,500	546	5.65
Java #2	5.09	1,820,068	558	5.83
Java #8	6.57	1,767,108	596	7.29
Java #7	2.62	1,803,192	841	8.14
Go #6	27.90	404,096	618	29.26
Go #2	14.17	624,780	672	56.29
Go #3	14.91	326,508	806	58.00
Go #5	14.87	425,960	957	58.15
Go	32.01	243,192	488	59.78
Go #7	32.52	248,604	531	61.47
pidigits
source	secs	mem	gz	cpu secs
* Java #3	0.80	41,900	770	0.83
* Go #4	0.82	19,808	689	0.83
Go	1.18	19,808	715	1.20
* Java #2	1.29	45,768	944	1.37
* Go #3	1.40	19,808	610	1.44
Go #2	1.84	19,808	740	1.89
Go #6	2.46	19,512	727	2.46
Go #7	4.99	19,808	702	5.61
Java	7.68	482,056	807	8.75
regex-redux
source	secs	mem	gz	cpu secs
Java #2	1.55	372,764	2201	3.16
Go #5	3.25	321,360	817	5.43
Java	8.47	575,552	875	16.69
Java #6	5.60	1,237,440	746	17.12
Java #3	5.25	611,476	935	17.25
Go #4	14.61	369,008	832	35.91
Go	25.37	319,956	749	61.07
Go #3	25.62	371,204	836	61.79
Java	java 23 2024-09-17 Java HotSpot(TM) 64-Bit Server VM (build 23+37-2369, mixed mode, sharing)
Go	go version go1.23.1 linux/amd64 GOAMD64=v2