== sanity test 101b: check stride-io mode read-ahead =========================================================================== 23:14:37 (1735100077)
striped dir -i1 -c2 -H crush2 /mnt/lustre/d101b.sanity

8.134847s, 1.03119MB/s
Read-ahead success for size 8192

6.339888s, 1.32315MB/s
Read-ahead success for size 16384

7.360402s, 1.13969MB/s
Read-ahead success for size 32768

7.644466s, 1.09734MB/s
Read-ahead success for size 65536

6.275964s, 1.33662MB/s
Read-ahead success for size 131072

6.328381s, 1.32555MB/s
Read-ahead success for size 262144

4.229360s, 1.98342MB/s
Read-ahead success for size 524288

6.353243s, 1.32037MB/s
Read-ahead success for size 1048576