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	10.04	42,708	1289	39.47
Java #3	40.81	42,920	1264	40.91
Java #2	44.33	41,012	520	44.38
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 #5	6.79	41,476	1435	6.83
Java #4	6.91	41,364	1495	6.95
Go	7.01	19,808	1316	7.03
Go #2	7.03	19,808	1222	7.05
Java #2	7.58	41,440	1430	7.62
Java #3	7.63	41,352	1436	7.67
Java	7.89	41,616	1437	7.93
spectral-norm
source	secs	mem	gz	cpu secs
Go	5.33	19,808	417	5.34
Go #2	1.50	19,808	674	5.68
Go #4	1.45	19,808	555	5.69
Java #3	1.69	43,028	762	6.41
Java	7.08	42,384	521	7.14
Java #2	2.44	42,180	956	9.47
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	4.14	81,668	802	16.25
Java #4	4.44	104,696	667	16.25
Java #6	4.31	81,888	808	16.97
Go	5.02	33,024	829	20.02
Java	25.75	41,428	671	25.81
Go #2	6.85	33,152	843	27.28
Go #6	6.89	33,024	707	27.44
Java #3	7.42	81,216	910	29.33
pidigits
source	secs	mem	gz	cpu secs
Go #4	0.82	19,808	689	0.83
Java #3	0.94	40,944	770	0.96
Go	1.18	19,808	715	1.20
Java #2	1.35	44,528	944	1.42
Go #3	1.40	19,808	610	1.44
Go #2	1.84	19,808	740	1.89
Go #8	2.46	19,808	727	2.47
Go #7	4.99	19,808	702	5.61
Java	7.63	491,600	807	8.66
regex-redux
source	secs	mem	gz	cpu secs
Java #8	1.62	372,312	2201	3.20
Go #5	3.25	321,360	817	5.43
Java	8.58	586,528	875	16.95
Java #6	5.59	1,235,356	746	17.14
Java #3	5.25	629,428	935	17.37
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
fasta
source	secs	mem	gz	cpu secs
Java #4	3.16	42,812	1528	3.27
Java #6	1.18	48,364	2549	3.74
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	1.26	48,824	2478	4.17
Java #2	4.39	47,624	1259	4.56
k-nucleotide
source	secs	mem	gz	cpu secs
Java	5.02	369,032	1821	16.31
Java #3	7.26	365,384	1642	25.09
Java #6	7.26	365,680	1614	25.28
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	34.70	195,564	1887	35.08
Java #5	20.44	218,932	2225	44.56
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	3.40	2,031,576	760	4.06
Java #5	4.78	1,096,264	1115	4.92
Java #4	5.59	1,890,020	656	5.71
Java #7	23.61	1,036,152	1654	6.24
Go #5		Bad Output
Go		Failed
Java #3		Bad Output
Java #8		Bad Output
binary-trees
source	secs	mem	gz	cpu secs
Java #4	4.46	1,957,564	846	5.19
Java #3	4.90	2,032,184	546	5.67
Java #6	5.02	2,065,280	535	5.79
Java #2	5.11	2,064,188	558	5.83
Java #7	2.59	1,718,620	841	8.08
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
Java	java 22 2024-03-19 Java HotSpot(TM) 64-Bit Server VM (build 22+36-2370, mixed mode, sharing)
Go	go version go1.23.1 linux/amd64 GOAMD64=v2