0:  real 36.36 user 0.21 sys 22.35
1:  real 36.13 user 0.22 sys 21.92
2:  real 35.99 user 0.21 sys 22.32
3:  real 36.56 user 0.23 sys 22.53
0:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.62548 s, 9.5 GB/s real 3.62 user 0.01 sys 3.60
1:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.69548 s, 9.3 GB/s real 3.69 user 0.02 sys 3.66
2:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.69802 s, 9.3 GB/s real 3.69 user 0.01 sys 3.68
3:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.96906 s, 8.7 GB/s real 3.96 user 0.01 sys 3.95