== sanity test 101b: check stride-io mode read-ahead =========================================================================== 09:13:03 (1787749983)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

2.001492s, 4.19118MB/s
Read-ahead success for size 8192

2.363116s, 3.54981MB/s
Read-ahead success for size 16384

2.376671s, 3.52956MB/s
Read-ahead success for size 32768

1.419055s, 5.9114MB/s
Read-ahead success for size 65536

1.256748s, 6.67485MB/s
Read-ahead success for size 131072

1.705764s, 4.9178MB/s
Read-ahead success for size 262144

1.574733s, 5.327MB/s
Read-ahead success for size 524288

1.531446s, 5.47757MB/s
Read-ahead success for size 1048576