== sanity test 101b: check stride-io mode read-ahead =========================================================================== 01:36:39 (1786340199)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

2.063449s, 4.06533MB/s
Read-ahead success for size 8192

2.730480s, 3.07221MB/s
Read-ahead success for size 16384

3.265531s, 2.56883MB/s
Read-ahead success for size 32768

2.165392s, 3.87394MB/s
Read-ahead success for size 65536

1.922952s, 4.36236MB/s
Read-ahead success for size 131072

1.933003s, 4.33968MB/s
Read-ahead success for size 262144

1.563072s, 5.36674MB/s
Read-ahead success for size 524288

1.711913s, 4.90014MB/s
Read-ahead success for size 1048576