== sanity test 101b: check stride-io mode read-ahead =========================================================================== 16:16:48 (1763155008)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

1.609983s, 5.21037MB/s
Read-ahead success for size 8192

1.576688s, 5.3204MB/s
Read-ahead success for size 16384

1.948374s, 4.30544MB/s
Read-ahead success for size 32768

1.275988s, 6.57421MB/s
Read-ahead success for size 65536

0.973208s, 8.61954MB/s
Read-ahead success for size 131072

1.099575s, 7.62895MB/s
Read-ahead success for size 262144

0.805192s, 10.4181MB/s
Read-ahead success for size 524288

1.230428s, 6.81763MB/s
Read-ahead success for size 1048576