== sanity test 101b: check stride-io mode read-ahead =========================================================================== 18:51:20 (1789685480)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.445978s, 5.80134MB/s
Read-ahead success for size 8192

1.527659s, 5.49115MB/s
Read-ahead success for size 16384

1.439942s, 5.82566MB/s
Read-ahead success for size 32768

1.611640s, 5.20501MB/s
Read-ahead success for size 65536

1.595026s, 5.25923MB/s
Read-ahead success for size 131072

1.054490s, 7.95513MB/s
Read-ahead success for size 262144

1.221810s, 6.86572MB/s
Read-ahead success for size 524288

0.961790s, 8.72187MB/s
Read-ahead success for size 1048576