== sanity test 101b: check stride-io mode read-ahead =========================================================================== 10:40:55 (1789396855)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

1.857353s, 4.51643MB/s
Read-ahead success for size 8192

2.118805s, 3.95912MB/s
Read-ahead success for size 16384

2.190903s, 3.82884MB/s
Read-ahead success for size 32768

2.361962s, 3.55154MB/s
Read-ahead success for size 65536

2.101428s, 3.99186MB/s
Read-ahead success for size 131072

1.754810s, 4.78035MB/s
Read-ahead success for size 262144

1.576007s, 5.3227MB/s
Read-ahead success for size 524288

1.808785s, 4.6377MB/s
Read-ahead success for size 1048576