0:  real 32.70 user 2.03 sys 17.36
1:  real 33.53 user 2.06 sys 17.66
2:  real 33.53 user 2.06 sys 17.83
3:  real 34.20 user 2.02 sys 18.78
0:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.83867 s, 9.0 GB/s real 3.84 user 0.12 sys 3.70
1:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.80166 s, 9.0 GB/s real 3.80 user 0.12 sys 3.66
2:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.84667 s, 8.9 GB/s real 3.84 user 0.12 sys 3.71
3:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 4.15909 s, 8.3 GB/s real 4.15 user 0.12 sys 4.02