Java versus Java -Xint

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
Java #3	40.02	40.12—40.21	62,652	1264	1.69
Java	10.48	42.17—43.29	62,661	1289	1.73
Java #2	45.41	45.13—51.49	60,027	520	1.68
Java #8	46.66	49.88—55.68	59,994	517	1.65
Java -Xint #3	498.58	497.22	55,575	1264	1.80
Java -Xint	134.82	527.88	55,443	1289	2.69
Java -Xint #2	697.50	697.68	54,956	520	2.72
Java -Xint #8	708.83	709.01	54,968	517	1.80
n-body
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Java #4	6.92	6.94	60,592	1495	1.65
Java #5	7.34	7.39	61,669	1435	1.78
Java #2	7.51	7.53	60,846	1430	1.71
Java #3	7.52	7.54	61,186	1436	1.65
Java #8	7.61	7.66	60,953	1322	1.67
Java	7.89	7.91	61,276	1437	1.70
Java -Xint #4	160.54	160.58—160.66	56,537	1495	1.69
Java -Xint #8	160.98	161.04—161.34	56,529	1322	1.78
Java -Xint #3	175.24	175.34—175.45	56,549	1436	2.79
Java -Xint #2	178.94	179.09—179.27	56,537	1430	1.66
Java -Xint	187.47	186.89—189.24	56,762	1437	1.71
Java -Xint #5	240.86	240.99—241.14	56,521	1435	1.84
spectral-norm
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Java	5.47	5.51	61,817	521	1.51
Java #8	5.47	5.51	62,308	453	1.72
Java #3	1.61	6.01	62,812	762	1.68
Java #2	1.65	6.16—6.20	61,784	956	2.76
Java -Xint #2	17.04	67.36	57,840	956	2.74
Java -Xint #8	84.13	84.24—84.42	57,487	453	2.80
Java -Xint	84.66	84.78—84.97	57,860	521	1.77
Java -Xint #3	26.20	103.53—104.58	58,536	762	1.68
mandelbrot
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Java #2	4.16	16.30—16.44	101,253	802	1.72
Java #4	4.44	16.15—16.21	124,953	667	1.66
Java #6	4.21	16.67—17.00	100,794	808	1.78
Java	24.54	24.65—24.78	60,711	671	1.81
Java #8	27.72	27.85—27.91	63,836	441	1.74
Java #3	7.11	28.81—34.50	101,401	910	1.91
Java -Xint	361.43	359.89	89,395	671	1.86
Java -Xint #3	121.75	478.38	129,159	910	2.82
Java -Xint #4	163.49	605.97	153,235	667	1.91
Java -Xint #8	631.98	632.13	87,757	441	1.64
Java -Xint #2	206.34	818.36	127,955	802	1.79
Java -Xint #6	215.54	854.67	128,238	808	6.56
fasta
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Java #4	3.32	3.42	62,726	1528	1.74
Java #6	1.20	3.73	68,055	2549	1.91
Java #5	1.27	3.95—4.17	68,420	2478	1.86
Java #2	4.41	4.64—4.73	65,995	1259	1.75
Java #8	10.27	10.94—11.09	202,166	894	1.99
Java -Xint #5	8.96	23.43	60,871	2478	2.00
Java -Xint #4	25.47	25.46	55,329	1528	2.74
Java -Xint #6	9.18	30.82	60,899	2549	2.03
Java -Xint #2	37.02	37.02	55,284	1259	1.86
Java -Xint #8	329.43	327.85	465,990	894	2.67
k-nucleotide
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Java	4.94	16.37—17.19	459,260	1821	2.19
Java #3	7.25	25.39—25.58	389,857	1642	2.01
Java #6	7.27	25.30—26.29	389,628	1614	2.19
Java #4	34.38	34.66—36.43	218,042	1887	2.05
Java #5	20.48	44.95—46.24	243,007	2225	2.12
Java #8	79.72	83.79—87.16	1,484,460	786	2.09
Java -Xint	174.01	431.72—433.22	379,441	1821	3.24
Java -Xint #4	727.60	727.61	465,605	1887	2.10
Java -Xint #5	361.44	825.11	486,142	2225	2.29
Java -Xint #3	387.14	1,261.16	631,669	1642	2.22
Java -Xint #6	389.44	1,264.41	631,869	1614	3.23
Java -Xint #8		Timed Out
reverse-complement
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Java #6	3.20	3.84	2,103,058	760	1.69
Java #5	4.81	4.93—5.10	1,143,575	1115	1.66
Java #4	5.73	5.87—5.94	1,958,097	656	1.58
Java -Xint #6	39.75	48.48—48.58	2,098,323	760	1.83
Java -Xint #4	80.45	80.51—80.60	1,949,635	656	1.66
Java -Xint #5	173.32	173.61—173.83	1,136,472	1115	2.71
Java -Xint #7		Bad Output
Java #7		Bad Output
Java -Xint #3		Bad Output
Java #3		Bad Output
binary-trees [ Contentious. Different approaches. ]
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Java #4	4.45	5.56—5.91	1,804,603	846	2.63
Java #6	4.91	5.73—5.77	1,792,643	535	1.59
Java #3	4.92	5.73—5.85	1,733,562	546	1.55
Java #2	5.05	5.84—5.91	1,792,967	558	1.78
Java #7	2.62	8.09—8.18	1,778,696	841	1.88
Java -Xint #3	67.05	67.79—67.89	1,208,656	546	2.73
Java -Xint #6	67.56	68.29—68.36	1,276,555	535	2.68
Java -Xint #2	74.47	75.23—75.47	1,110,118	558	2.67
Java -Xint #7	32.92	96.82—96.97	996,970	841	1.99
Java -Xint #4	98.01	98.78—98.99	1,018,921	846	2.81
pidigits [ Contentious. Different libraries. ]
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
* Java #3	0.84	0.86	60,424	770	1.73
Java #4	1.05	1.27	78,606	733	3.62
* Java #2	1.34	1.41	65,090	944	1.71
Java -Xint #2	1.46	1.44	58,733	944	1.70
Java	7.72	8.78—8.83	453,767	807	1.56
Java -Xint	182.51	182.93—183.32	207,122	807	2.84
Java -Xint #4		Bad Output
Java -Xint #3		Empty
regex-redux [ Contentious. Different libraries. ]
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Java #2	1.60	3.19	386,425	2201	3.75
Java	8.45	16.81—16.98	533,582	875	1.81
Java #6	5.61	17.10—17.43	1,287,463	746	1.82
Java #3	5.30	17.04—17.22	636,994	935	1.82
Java -Xint	558.70	999.78	569,221	875	1.93
Java -Xint #3	381.83	1,011.98	693,670	935	1.78
Java -Xint #6	384.29	1,012.72	1,320,649	746	3.18
Java -Xint #2		Bad Output
Java	java 23 2024-09-17 Java HotSpot(TM) 64-Bit Server VM (build 23+37-2369, mixed mode, sharing)
Java -Xint	java 23 2024-09-17 Java HotSpot(TM) 64-Bit Server VM (build 23+37-2369, interpreted mode, sharing)