== sanity test 101b: check stride-io mode read-ahead =========================================================================== 18:32:32 (1784413952)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

0.483615s, 17.3456MB/s
Read-ahead success for size 8192

0.456478s, 18.3768MB/s
Read-ahead success for size 16384

0.520949s, 16.1026MB/s
Read-ahead success for size 32768

0.494277s, 16.9715MB/s
Read-ahead success for size 65536

0.469804s, 17.8555MB/s
Read-ahead success for size 131072

0.386360s, 21.7119MB/s
Read-ahead success for size 262144

0.392510s, 21.3717MB/s
Read-ahead success for size 524288

0.400548s, 20.9428MB/s
Read-ahead success for size 1048576