regexide.com/data/re2.csv

1	repetitions	runtime (sec)
2	524288	0.009082
3	1048576	0.020563
4	2097152	0.038678
5	4194304	0.078328
6	8388608	0.179104
7	16777216	0.35633
8	33554432	0.696656
9	67108864	1.359