== sanity test 101b: check stride-io mode read-ahead =========================================================================== 07:33:28 (1787830408)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

2.004461s, 4.18497MB/s
Read-ahead success for size 8192

1.685176s, 4.97788MB/s
Read-ahead success for size 16384

1.962160s, 4.27519MB/s
Read-ahead success for size 32768

1.568954s, 5.34662MB/s
Read-ahead success for size 65536

1.963718s, 4.2718MB/s
Read-ahead success for size 131072

1.648556s, 5.08846MB/s
Read-ahead success for size 262144

1.749592s, 4.79461MB/s
Read-ahead success for size 524288

1.452767s, 5.77423MB/s
Read-ahead success for size 1048576