== sanity test 101b: check stride-io mode read-ahead =========================================================================== 17:25:43 (1773609943)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

1.472376s, 5.69733MB/s
Read-ahead success for size 8192

1.816671s, 4.61757MB/s
Read-ahead success for size 16384

2.211097s, 3.79387MB/s
Read-ahead success for size 32768

1.979518s, 4.2377MB/s
Read-ahead success for size 65536

1.325067s, 6.3307MB/s
Read-ahead success for size 131072

1.215974s, 6.89867MB/s
Read-ahead success for size 262144

1.388344s, 6.04217MB/s
Read-ahead success for size 524288

1.739273s, 4.82305MB/s
Read-ahead success for size 1048576