== sanity test 101b: check stride-io mode read-ahead =========================================================================== 08:51:36 (1724763096)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

5.286885s, 1.58668MB/s
Read-ahead success for size 8192

5.729218s, 1.46418MB/s
Read-ahead success for size 16384

4.952798s, 1.69371MB/s
Read-ahead success for size 32768

4.699148s, 1.78513MB/s
Read-ahead success for size 65536

4.708941s, 1.78142MB/s
Read-ahead success for size 131072

5.589493s, 1.50078MB/s
Read-ahead success for size 262144

6.942740s, 1.20826MB/s
Read-ahead success for size 524288

6.330071s, 1.3252MB/s
Read-ahead success for size 1048576