== sanity test 101b: check stride-io mode read-ahead =========================================================================== 16:00:51 (1710100851)
striped dir -i1 -c2 -H fnv_1a_64 /mnt/lustre/d101b.sanity

9.475846s, 0.885262MB/s
Read-ahead success for size 8192

21.024753s, 0.398987MB/s
Read-ahead success for size 16384

22.465648s, 0.373397MB/s
Read-ahead success for size 32768

33.725460s, 0.248732MB/s
Read-ahead success for size 65536

10.396927s, 0.806835MB/s
Read-ahead success for size 131072

8.504012s, 0.986429MB/s
Read-ahead success for size 262144

9.588237s, 0.874885MB/s
Read-ahead success for size 524288

15.193074s, 0.552134MB/s
Read-ahead success for size 1048576