== sanity test 101b: check stride-io mode read-ahead =========================================================================== 11:07:22 (1787843242)
striped dir -i1 -c2 -H crush  /mnt/lustre/d101b.sanity

1.716912s, 4.88587MB/s
Read-ahead success for size 8192

2.242546s, 3.74066MB/s
Read-ahead success for size 16384

2.337563s, 3.58861MB/s
Read-ahead success for size 32768

1.842278s, 4.55339MB/s
Read-ahead success for size 65536

0.874106s, 9.59679MB/s
Read-ahead success for size 131072

1.421797s, 5.9MB/s
Read-ahead success for size 262144

1.372757s, 6.11077MB/s
Read-ahead success for size 524288

1.390222s, 6.03401MB/s
Read-ahead success for size 1048576