0:  real 56.47 user 2.01 sys 18.07
1:  real 56.90 user 2.01 sys 17.82
2:  real 57.47 user 2.02 sys 18.15
3:  real 57.63 user 2.02 sys 18.12
0:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.99991 s, 8.6 GB/s real 4.00 user 0.12 sys 3.86
1:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 4.0149 s, 8.6 GB/s real 4.01 user 0.12 sys 3.87
2:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.92994 s, 8.7 GB/s real 3.93 user 0.12 sys 3.79
3:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 4.00841 s, 8.6 GB/s real 4.00 user 0.12 sys 3.87