== sanity test 101b: check stride-io mode read-ahead =========================================================================== 23:23:13 (1717557793)
striped dir -i1 -c2 -H fnv_1a_64 /mnt/lustre/d101b.sanity

4.239313s, 1.97877MB/s
Read-ahead success for size 8192

3.864968s, 2.17042MB/s
Read-ahead success for size 16384

4.203102s, 1.99581MB/s
Read-ahead success for size 32768

3.586604s, 2.33887MB/s
Read-ahead success for size 65536

4.016693s, 2.08844MB/s
Read-ahead success for size 131072

3.263769s, 2.57022MB/s
Read-ahead success for size 262144

3.431945s, 2.44427MB/s
Read-ahead success for size 524288

3.075900s, 2.7272MB/s
Read-ahead success for size 1048576