== sanity test 101b: check stride-io mode read-ahead =========================================================================== 02:00:22 (1788847222)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

1.924168s, 4.3596MB/s
Read-ahead success for size 8192

2.161763s, 3.88045MB/s
Read-ahead success for size 16384

2.524615s, 3.32273MB/s
Read-ahead success for size 32768

2.080006s, 4.03297MB/s
Read-ahead success for size 65536

1.287336s, 6.51625MB/s
Read-ahead success for size 131072

1.607158s, 5.21953MB/s
Read-ahead success for size 262144

1.228475s, 6.82847MB/s
Read-ahead success for size 524288

1.182591s, 7.09341MB/s
Read-ahead success for size 1048576