== sanity test 101b: check stride-io mode read-ahead =========================================================================== 09:19:03 (1789132743)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

2.365924s, 3.54559MB/s
Read-ahead success for size 8192

2.689159s, 3.11942MB/s
Read-ahead success for size 16384

2.358007s, 3.5575MB/s
Read-ahead success for size 32768

2.428835s, 3.45376MB/s
Read-ahead success for size 65536

2.301841s, 3.6443MB/s
Read-ahead success for size 131072

1.576585s, 5.32075MB/s
Read-ahead success for size 262144

1.786746s, 4.69491MB/s
Read-ahead success for size 524288

1.780996s, 4.71007MB/s
Read-ahead success for size 1048576