# fds threads bufsize passes_per_sec
2 1 12 28160.44
4 1 12 23126.19
8 1 12 16917.26
16 1 12 11112.44
32 1 12 5815.85
64 1 12 3061.32
128 1 12 1557.71
256 1 12 765.65
512 1 12 327.93
1024 1 12 148.70
2048 1 12 71.26
4096 1 12 34.94