# fds threads bufsize passes_per_sec
2 1 12 24304.82
4 1 12 24187.13
8 1 12 24625.14
16 1 12 24229.09
32 1 12 24439.71
64 1 12 24593.77
128 1 12 24651.42
256 1 12 24626.41
512 1 12 24607.26
1024 1 12 24289.29
2048 1 12 24540.53
4096 1 12 24545.84