== sanity test 101b: check stride-io mode read-ahead =========================================================================== 00:22:34 (1786940554)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

0.552099s, 15.194MB/s
Read-ahead success for size 8192

0.572026s, 14.6647MB/s
Read-ahead success for size 16384

0.642615s, 13.0539MB/s
Read-ahead success for size 32768

0.595274s, 14.092MB/s
Read-ahead success for size 65536

0.523934s, 16.0108MB/s
Read-ahead success for size 131072

0.518934s, 16.1651MB/s
Read-ahead success for size 262144

0.459815s, 18.2434MB/s
Read-ahead success for size 524288

0.438892s, 19.1131MB/s
Read-ahead success for size 1048576