filename: 500
hash function: random
total buckets:       262147
total tuples:        10020 (3.82%)
used buckets:        9847 (3.76%)
maximum list length: 3
average list length: 1.02
hash cost per tuple: 101 cyc, 204 ns, 5 Mhz on 497 Mhz CPU (INNER)
Count	Length	CT
1	3	0.03%
171	2	3.44%
9675	1	100.00%
252300	0	100.00%