== sanity test 101b: check stride-io mode read-ahead =========================================================================== 08:51:46 (1724763106)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

5.692608s, 1.4736MB/s
Read-ahead success for size 8192

5.168189s, 1.62312MB/s
Read-ahead success for size 16384

4.919848s, 1.70505MB/s
Read-ahead success for size 32768

5.970118s, 1.4051MB/s
Read-ahead success for size 65536

7.610271s, 1.10227MB/s
Read-ahead success for size 131072

7.795216s, 1.07612MB/s
Read-ahead success for size 262144

6.564088s, 1.27795MB/s
Read-ahead success for size 524288

5.406152s, 1.55168MB/s
Read-ahead success for size 1048576