0:  real 34.15 user 2.02 sys 17.83
1:  real 34.24 user 2.07 sys 18.23
2:  real 34.14 user 2.07 sys 18.19
3:  real 34.79 user 2.06 sys 19.08
0:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.80965 s, 9.0 GB/s real 3.81 user 0.12 sys 3.67
1:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.80726 s, 9.0 GB/s real 3.80 user 0.12 sys 3.67
2:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.81313 s, 9.0 GB/s real 3.81 user 0.12 sys 3.68
3:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 4.03509 s, 8.5 GB/s real 4.03 user 0.12 sys 3.90