filename: 500
hash function: crc32
total buckets:       65537
total tuples:        10020 (15.29%)
used buckets:        9285 (14.17%)
maximum list length: 4
average list length: 1.08
hash cost per tuple: 189 cyc, 381 ns, 3 Mhz on 497 Mhz CPU (INNER)
Count	Length	CT
2	4	0.08%
31	3	1.01%
667	2	14.32%
8585	1	100.00%
56252	0	100.00%