== sanity test 101b: check stride-io mode read-ahead =========================================================================== 05:45:34 (1788601534)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

1.083138s, 7.74473MB/s
Read-ahead success for size 8192

1.274333s, 6.58274MB/s
Read-ahead success for size 16384

1.233685s, 6.79964MB/s
Read-ahead success for size 32768

1.312142s, 6.39306MB/s
Read-ahead success for size 65536

1.175913s, 7.1337MB/s
Read-ahead success for size 131072

1.193738s, 7.02718MB/s
Read-ahead success for size 262144

0.839441s, 9.99309MB/s
Read-ahead success for size 524288

0.935115s, 8.97067MB/s
Read-ahead success for size 1048576