== sanity test 101b: check stride-io mode read-ahead =========================================================================== 10:12:56 (1779977576)
striped dir -i1 -c2 -H fnv_1a_64 /mnt/lustre/d101b.sanity

2.453146s, 3.41953MB/s
Read-ahead success for size 8192

1.945829s, 4.31107MB/s
Read-ahead success for size 16384

1.526553s, 5.49513MB/s
Read-ahead success for size 32768

1.788613s, 4.69001MB/s
Read-ahead success for size 65536

1.618035s, 5.18444MB/s
Read-ahead success for size 131072

1.263437s, 6.63951MB/s
Read-ahead success for size 262144

1.160731s, 7.227MB/s
Read-ahead success for size 524288

1.138378s, 7.36891MB/s
Read-ahead success for size 1048576