filename: 500
hash function: rt_ab
total buckets:       262147
total tuples:        10020 (3.82%)
used buckets:        8858 (3.38%)
maximum list length: 4
average list length: 1.13
hash cost per tuple: 49 cyc, 99 ns, 10 Mhz on 497 Mhz CPU (INNER)
Count	Length	CT
3	4	0.12%
73	3	2.31%
1007	2	22.41%
7775	1	100.00%
253289	0	100.00%