== sanity test 101b: check stride-io mode read-ahead =========================================================================== 20:49:19 (1775868559)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

1.978228s, 4.24047MB/s
Read-ahead success for size 8192

2.129775s, 3.93873MB/s
Read-ahead success for size 16384

2.294998s, 3.65517MB/s
Read-ahead success for size 32768

1.888069s, 4.44296MB/s
Read-ahead success for size 65536

2.037585s, 4.11694MB/s
Read-ahead success for size 131072

1.579642s, 5.31045MB/s
Read-ahead success for size 262144

1.508290s, 5.56167MB/s
Read-ahead success for size 524288

1.420626s, 5.90487MB/s
Read-ahead success for size 1048576