== sanity test 101b: check stride-io mode read-ahead =========================================================================== 03:49:45 (1749541785)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

0.357757s, 23.4478MB/s
Read-ahead success for size 8192

0.364968s, 22.9845MB/s
Read-ahead success for size 16384

0.364370s, 23.0222MB/s
Read-ahead success for size 32768

0.387626s, 21.641MB/s
Read-ahead success for size 65536

0.298715s, 28.0823MB/s
Read-ahead success for size 131072

0.263826s, 31.796MB/s
Read-ahead success for size 262144

0.290148s, 28.9115MB/s
Read-ahead success for size 524288

0.283095s, 29.6318MB/s
Read-ahead success for size 1048576