Ruby versus Erlang

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
Erlang	65.23	258.17—260.25	64,389	1044	1.75
Ruby #2	154.32	593.14	23,679	1462
Ruby	1,437.74	1,436.24	17,695	391
Ruby #8	2,060.21	2,058.52	17,691	418
n-body
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Erlang #3	103.81	104.49—105.71	64,164	1405	1.08
Ruby #3	166.67	166.61—166.69	18,346	1169
Ruby #2	172.30	172.28—172.34	18,043	1143
Ruby #8	320.00	318.33	18,350	1160
Ruby #7	768.29	766.83	18,326	1139
spectral-norm
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Erlang #2	11.05	42.68	76,771	753	1.84
Erlang	63.91	63.93—64.12	68,399	513	1.70
Ruby #4	126.05	126.09—127.01	20,025	333
Ruby #8	175.57	175.87—176.32	19,132	294
Ruby #5	56.52	207.11—207.67	43,725	764
mandelbrot
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Erlang #4	53.86	214.34—214.76	98,140	813	0.97
Erlang #3	56.92	226.59—227.22	92,709	798	1.66
Ruby #5	143.13	566.14	118,436	978
Ruby #4	579.40	578.27	169,955	853
Ruby #2	167.51	660.80	126,730	887
Ruby #8	944.53	943.02	50,926	364
Ruby #3	1,741.44	1,739.76	50,524	313
Ruby #6		Timed Out
Erlang		Bad Output
Erlang #2		Bad Output
Ruby #7		Timed Out
fasta
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Erlang #2	19.40	21.31—21.74	64,844	1170	1.69
Ruby #6	34.17	34.26—34.71	119,271	1097
Ruby #3	43.78	43.86—44.10	119,243	1035
Ruby #2	82.88	83.00—83.22	143,434	747
Ruby #5	99.47	99.61—100.05	19,194	1000
Ruby #4	129.31	129.79—130.82	305,578	864
Erlang	81.40	167.59—173.59	64,070	1045	0.98
Ruby #8	188.42	188.50—189.24	17,822	700
k-nucleotide
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Ruby #7	243.79	246.45—258.00	399,401	792
Ruby #2	262.22	262.46—263.81	179,548	426
Ruby #3	263.08	264.95—272.82	207,466	546
Ruby	87.55	317.80	478,077	583
Ruby #8	519.31	517.57	872,055	529
Erlang #3	5,352.88	5,606.96	1,306,636	945	1.58
Erlang	5,519.03	5,739.32	4,056,982	944	1.00
reverse-complement
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Ruby #4	6.01	11.72—11.85	3,079,053	608
Ruby #5	13.63	13.44—14.87	1,647,829	301
Ruby #3	8.46	16.69—17.00	4,884,902	490
Ruby #2	19.54	19.56—20.02	519,827	272
Ruby	13.29	25.90—26.00	6,528,086	521
Erlang	1,781.95	1,977.67	4,154,388	1309	0.97
Erlang #4		Timed Out
Erlang #3		Timed Out
binary-trees [ Contentious. Different approaches. ]
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Erlang	10.97	11.12—11.30	501,953	426	1.59
Erlang #2	5.08	13.61—13.73	500,834	485	1.71
Ruby #4	47.09	47.06—47.17	489,144	371
Ruby #2	48.03	48.39—49.02	487,801	385
Ruby	48.14	48.56—49.08	487,592	383
Ruby #3	49.67	50.26—50.90	523,936	407
Ruby #5	18.86	53.95—54.17	2,280,051	1016
pidigits [ Contentious. Different libraries. ]
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Erlang	3.39	4.59—7.06	98,537	565	1.78
Erlang #3	3.16	4.48—5.04	78,606	568	1.71
Erlang #2	3.34	5.14—5.33	82,969	518	0.96
Ruby	17.94	18.01—18.15	53,740	524
Ruby #2		Empty
Ruby #5		Empty
regex-redux [ Contentious. Different libraries. ]
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Ruby #2	23.42	23.49—23.62	221,233	444
Ruby #3	12.42	24.39—24.49	217,313	730
Ruby #9	30.77	30.80—30.93	221,237	340
Erlang #6	21.26	41.85—42.36	4,641,796	1055	1.86
Ruby	ruby 3.4.0dev (2024-12-25 master f450108330) +YJIT +PRISM [x86_64-linux]
Erlang	Erlang/OTP 27 [erts-15.0] [source] [64-bit] [smp:4:4] [ds:4:4:10] [async-threads:1] [jit:ns]