== sanity test 101b: check stride-io mode read-ahead =========================================================================== 20:10:06 (1789085406)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

1.604960s, 5.22668MB/s
Read-ahead success for size 8192

1.937090s, 4.33052MB/s
Read-ahead success for size 16384

1.982265s, 4.23183MB/s
Read-ahead success for size 32768

2.536063s, 3.30773MB/s
Read-ahead success for size 65536

1.833752s, 4.57456MB/s
Read-ahead success for size 131072

1.522777s, 5.50876MB/s
Read-ahead success for size 262144

1.086701s, 7.71933MB/s
Read-ahead success for size 524288

1.167996s, 7.18205MB/s
Read-ahead success for size 1048576