== sanity test 101b: check stride-io mode read-ahead =========================================================================== 18:26:22 (1736983582)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.050802s, 165.124MB/s
Read-ahead success for size 8192

0.046804s, 179.228MB/s
Read-ahead success for size 16384

0.050840s, 165MB/s
Read-ahead success for size 32768

0.048491s, 172.993MB/s
Read-ahead success for size 65536

0.049873s, 168.199MB/s
Read-ahead success for size 131072

0.050489s, 166.147MB/s
Read-ahead success for size 262144

0.052744s, 159.044MB/s
Read-ahead success for size 524288

0.055882s, 150.113MB/s
Read-ahead success for size 1048576