== sanity test 101b: check stride-io mode read-ahead =========================================================================== 00:40:50 (1735364450)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

8.676797s, 0.966786MB/s
Read-ahead success for size 8192

8.533928s, 0.982971MB/s
Read-ahead success for size 16384

8.366423s, 1.00265MB/s
Read-ahead success for size 32768

8.177851s, 1.02577MB/s
Read-ahead success for size 65536

7.984545s, 1.05061MB/s
Read-ahead success for size 131072

7.750060s, 1.08239MB/s
Read-ahead success for size 262144

7.497440s, 1.11886MB/s
Read-ahead success for size 524288

7.223975s, 1.16122MB/s
Read-ahead success for size 1048576