== sanity test 101b: check stride-io mode read-ahead =========================================================================== 19:37:29 (1788392249)
striped dir -i1 -c2 -H crush  /mnt/lustre/d101b.sanity

0.967378s, 8.67149MB/s
Read-ahead success for size 8192

1.110391s, 7.55464MB/s
Read-ahead success for size 16384

1.020926s, 8.21667MB/s
Read-ahead success for size 32768

0.935012s, 8.97166MB/s
Read-ahead success for size 65536

1.038160s, 8.08027MB/s
Read-ahead success for size 131072

0.924357s, 9.07507MB/s
Read-ahead success for size 262144

0.771241s, 10.8768MB/s
Read-ahead success for size 524288

0.712068s, 11.7806MB/s
Read-ahead success for size 1048576