== sanity test 101b: check stride-io mode read-ahead =========================================================================== 23:43:38 (1782531818)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.225552s, 6.84476MB/s
Read-ahead success for size 8192

1.244710s, 6.73941MB/s
Read-ahead success for size 16384

1.294286s, 6.48126MB/s
Read-ahead success for size 32768

1.489388s, 5.63225MB/s
Read-ahead success for size 65536

1.039968s, 8.06622MB/s
Read-ahead success for size 131072

1.095397s, 7.65805MB/s
Read-ahead success for size 262144

0.757052s, 11.0806MB/s
Read-ahead success for size 524288

0.840611s, 9.97918MB/s
Read-ahead success for size 1048576