== sanity test 101b: check stride-io mode read-ahead =========================================================================== 13:27:34 (1744046854)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

0.428690s, 19.568MB/s
Read-ahead success for size 8192

0.396117s, 21.1771MB/s
Read-ahead success for size 16384

0.400996s, 20.9194MB/s
Read-ahead success for size 32768

0.402907s, 20.8202MB/s
Read-ahead success for size 65536

0.384556s, 21.8137MB/s
Read-ahead success for size 131072

0.377671s, 22.2114MB/s
Read-ahead success for size 262144

0.269554s, 31.1203MB/s
Read-ahead success for size 524288

0.292785s, 28.6511MB/s
Read-ahead success for size 1048576