== sanity test 101b: check stride-io mode read-ahead =========================================================================== 22:18:59 (1767323939)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.914731s, 9.17057MB/s
Read-ahead success for size 8192

0.925555s, 9.06333MB/s
Read-ahead success for size 16384

1.004319s, 8.35253MB/s
Read-ahead success for size 32768

0.884052s, 9.48882MB/s
Read-ahead success for size 65536

0.852813s, 9.8364MB/s
Read-ahead success for size 131072

0.721652s, 11.6242MB/s
Read-ahead success for size 262144

0.617006s, 13.5957MB/s
Read-ahead success for size 524288

0.610418s, 13.7424MB/s
Read-ahead success for size 1048576