== sanity test 101b: check stride-io mode read-ahead =========================================================================== 05:24:55 (1788513895)
striped dir -i1 -c2 -H crush2  /mnt/lustre/d101b.sanity

2.258399s, 3.7144MB/s
Read-ahead success for size 8192

2.369776s, 3.53983MB/s
Read-ahead success for size 16384

3.187130s, 2.63203MB/s
Read-ahead success for size 32768

2.572402s, 3.261MB/s
Read-ahead success for size 65536

1.842959s, 4.55171MB/s
Read-ahead success for size 131072

1.108188s, 7.56966MB/s
Read-ahead success for size 262144

1.575881s, 5.32312MB/s
Read-ahead success for size 524288

1.298928s, 6.4581MB/s
Read-ahead success for size 1048576