== sanity test 101b: check stride-io mode read-ahead =========================================================================== 04:21:12 (1785399672)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

2.751519s, 3.04872MB/s
Read-ahead success for size 8192

3.402247s, 2.46561MB/s
Read-ahead success for size 16384

2.365209s, 3.54667MB/s
Read-ahead success for size 32768

2.328601s, 3.60242MB/s
Read-ahead success for size 65536

2.619703s, 3.20212MB/s
Read-ahead success for size 131072

2.044270s, 4.10347MB/s
Read-ahead success for size 262144

1.698253s, 4.93955MB/s
Read-ahead success for size 524288

2.645256s, 3.17119MB/s
Read-ahead success for size 1048576