== sanity test 101b: check stride-io mode read-ahead =========================================================================== 12:53:09 (1774889589)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

1.225355s, 6.84586MB/s
Read-ahead success for size 8192

1.516287s, 5.53234MB/s
Read-ahead success for size 16384

1.397945s, 6.00067MB/s
Read-ahead success for size 32768

1.040421s, 8.06271MB/s
Read-ahead success for size 65536

0.801988s, 10.4598MB/s
Read-ahead success for size 131072

0.839937s, 9.98719MB/s
Read-ahead success for size 262144

0.858319s, 9.7733MB/s
Read-ahead success for size 524288

0.814430s, 10.3MB/s
Read-ahead success for size 1048576