gistfile1.txt

* DataMapper, Active Record and Swift comparisons with GC disabled. 
* #create runs once creating the rows.
* #select and #update iterates through them <runs> times.
* memory usage is measured as (total rss of process after - before) benchmark is run.

-- driver: mysql rows: 5000 runs: 5 --

benchmark       	sys     	user    	total   	real    	rss
dm #create      	0.170000	1.780000	1.950000	3.655825	108.36m
dm #select      	0.300000	4.420000	4.720000	4.739661	322.62m
dm #update      	1.830000	18.720000	20.550000	28.819360	1412.11m
ar #create      	0.270000	2.600000	2.870000	3.897787	151.60m
ar #select      	0.040000	0.500000	0.540000	0.559071	57.29m
ar #update      	1.600000	12.330000	13.930000	20.052599	771.29m
swift #create   	0.120000	0.300000	0.420000	2.118335	13.89m
swift #select   	0.020000	0.400000	0.420000	0.518972	27.74m
swift #update   	0.510000	1.510000	2.020000	5.263985	75.05m
swift #write    	0.000000	0.040000	0.040000	0.087842	3.13m

-- driver: postgresql rows: 5000 runs: 5 --

benchmark       	sys     	user    	total   	real    	rss
dm #create      	0.250000	2.080000	2.330000	3.147116	118.04m
dm #select      	0.280000	4.580000	4.860000	5.027557	322.66m
dm #update      	1.790000	19.670000	21.460000	27.061896	1439.17m
ar #create      	0.260000	3.230000	3.490000	4.899369	183.70m
ar #select      	0.150000	0.780000	0.930000	1.054142	97.12m
ar #update      	2.030000	14.670000	16.700000	24.084335	865.98m
swift #create   	0.130000	0.790000	0.920000	2.035326	13.69m
swift #select   	0.000000	0.420000	0.420000	0.498745	28.98m
swift #update   	0.360000	2.140000	2.500000	5.374531	75.95m
swift #write    	0.000000	0.060000	0.060000	0.170981	3.13m