== sanity test 101b: check stride-io mode read-ahead =========================================================================== 20:16:46 (1786839406)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

0.542061s, 15.4754MB/s
Read-ahead success for size 8192

0.545607s, 15.3748MB/s
Read-ahead success for size 16384

0.604926s, 13.8672MB/s
Read-ahead success for size 32768

0.584280s, 14.3572MB/s
Read-ahead success for size 65536

0.467932s, 17.927MB/s
Read-ahead success for size 131072

0.457167s, 18.3491MB/s
Read-ahead success for size 262144

0.438624s, 19.1248MB/s
Read-ahead success for size 524288

0.425992s, 19.6919MB/s
Read-ahead success for size 1048576