0:  real 35.83 user 0.23 sys 21.49
1:  real 35.44 user 0.21 sys 21.42
2:  real 35.82 user 0.19 sys 21.99
3:  real 36.90 user 0.21 sys 22.72
0:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.6744 s, 9.4 GB/s real 3.67 user 0.02 sys 3.64
1:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.7215 s, 9.2 GB/s real 3.72 user 0.02 sys 3.69
2:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.78612 s, 9.1 GB/s real 3.78 user 0.01 sys 3.76
3:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 4.04252 s, 8.5 GB/s real 4.04 user 0.00 sys 4.03