== sanity test 101b: check stride-io mode read-ahead =========================================================================== 07:48:54 (1787744934)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

1.287782s, 6.514MB/s
Read-ahead success for size 8192

1.937967s, 4.32856MB/s
Read-ahead success for size 16384

1.643660s, 5.10362MB/s
Read-ahead success for size 32768

1.906490s, 4.40003MB/s
Read-ahead success for size 65536

2.192812s, 3.8255MB/s
Read-ahead success for size 131072

1.427879s, 5.87487MB/s
Read-ahead success for size 262144

1.504621s, 5.57523MB/s
Read-ahead success for size 524288

2.074747s, 4.0432MB/s
Read-ahead success for size 1048576