== sanity test 101b: check stride-io mode read-ahead =========================================================================== 05:04:55 (1768557895)
striped dir -i1 -c2 -H fnv_1a_64 /mnt/lustre/d101b.sanity

2.148722s, 3.904MB/s
Read-ahead success for size 8192

2.078211s, 4.03646MB/s
Read-ahead success for size 16384

2.332904s, 3.59578MB/s
Read-ahead success for size 32768

2.276627s, 3.68467MB/s
Read-ahead success for size 65536

1.899434s, 4.41637MB/s
Read-ahead success for size 131072

1.133756s, 7.39895MB/s
Read-ahead success for size 262144

1.208320s, 6.94237MB/s
Read-ahead success for size 524288

1.179393s, 7.11265MB/s
Read-ahead success for size 1048576