== sanity test 101b: check stride-io mode read-ahead =========================================================================== 01:49:39 (1734677379)
striped dir -i1 -c2 -H fnv_1a_64 /mnt/lustre/d101b.sanity

17.356568s, 0.48331MB/s
Read-ahead success for size 8192

15.568008s, 0.538836MB/s
Read-ahead success for size 16384

16.886424s, 0.496766MB/s
Read-ahead success for size 32768

15.866642s, 0.528695MB/s
Read-ahead success for size 65536

13.028613s, 0.64386MB/s
Read-ahead success for size 131072

15.242156s, 0.550356MB/s
Read-ahead success for size 262144

14.228297s, 0.589572MB/s
Read-ahead success for size 524288

11.950573s, 0.701942MB/s
Read-ahead success for size 1048576