== sanity test 101b: check stride-io mode read-ahead =========================================================================== 17:43:18 (1785966198)
striped dir -i1 -c2 -H crush2  /mnt/lustre/d101b.sanity

1.285389s, 6.52612MB/s
Read-ahead success for size 8192

1.685181s, 4.97787MB/s
Read-ahead success for size 16384

1.866840s, 4.49348MB/s
Read-ahead success for size 32768

1.895539s, 4.42545MB/s
Read-ahead success for size 65536

1.146999s, 7.31353MB/s
Read-ahead success for size 131072

1.238833s, 6.77138MB/s
Read-ahead success for size 262144

1.232626s, 6.80548MB/s
Read-ahead success for size 524288

1.167130s, 7.18738MB/s
Read-ahead success for size 1048576