filename: 500
hash function: rt_ab
total buckets:       32767
total tuples:        10020 (30.58%)
used buckets:        8407 (25.66%)
maximum list length: 4
average list length: 1.19
hash cost per tuple: 49 cyc, 99 ns, 10 Mhz on 497 Mhz CPU (INNER)
Count	Length	CT
9	4	0.36%
117	3	3.86%
1352	2	30.85%
6929	1	100.00%
24360	0	100.00%