== sanity test 101b: check stride-io mode read-ahead =========================================================================== 03:03:50 (1713078230)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

7.396972s, 1.13406MB/s
Read-ahead success for size 8192

6.306958s, 1.33006MB/s
Read-ahead success for size 16384

5.556230s, 1.50977MB/s
Read-ahead success for size 32768

4.590874s, 1.82724MB/s
Read-ahead success for size 65536

3.702208s, 2.26584MB/s
Read-ahead success for size 131072

4.014105s, 2.08978MB/s
Read-ahead success for size 262144

5.379450s, 1.55938MB/s
Read-ahead success for size 524288

4.158277s, 2.01733MB/s
Read-ahead success for size 1048576