filename: 500
hash function: crc32
total buckets:       262144
total tuples:        10020 (3.82%)
used buckets:        9908 (3.78%)
maximum list length: 2
average list length: 1.01
hash cost per tuple: 189 cyc, 381 ns, 3 Mhz on 498 Mhz CPU (INNER)
Count	Length	CT
112	2	2.24%
9796	1	100.00%
252236	0	100.00%