0:  real 52.32 user 0.26 sys 22.25
1:  real 52.67 user 0.21 sys 21.98
2:  real 52.28 user 0.21 sys 22.09
3:  real 52.40 user 0.20 sys 22.17
0:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.85019 s, 8.9 GB/s real 3.85 user 0.02 sys 3.81
1:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.89739 s, 8.8 GB/s real 3.89 user 0.01 sys 3.87
2:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.90487 s, 8.8 GB/s real 3.90 user 0.01 sys 3.88
3:  262144+0 records in 262144+0 records out 34359738368 bytes (34 GB) copied, 3.92449 s, 8.8 GB/s real 3.92 user 0.01 sys 3.90