== sanity test 101b: check stride-io mode read-ahead =========================================================================== 16:19:51 (1784405991)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.398380s, 5.9988MB/s
Read-ahead success for size 8192

1.291754s, 6.49397MB/s
Read-ahead success for size 16384

1.485666s, 5.64636MB/s
Read-ahead success for size 32768

1.602207s, 5.23566MB/s
Read-ahead success for size 65536

1.385489s, 6.05462MB/s
Read-ahead success for size 131072

1.227996s, 6.83114MB/s
Read-ahead success for size 262144

0.878289s, 9.55108MB/s
Read-ahead success for size 524288

0.856877s, 9.78975MB/s
Read-ahead success for size 1048576