== sanity test 101b: check stride-io mode read-ahead =========================================================================== 02:52:36 (1786690356)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

2.061083s, 4.07MB/s
Read-ahead success for size 8192

1.804387s, 4.64901MB/s
Read-ahead success for size 16384

1.974376s, 4.24874MB/s
Read-ahead success for size 32768

1.881788s, 4.45779MB/s
Read-ahead success for size 65536

1.767285s, 4.74661MB/s
Read-ahead success for size 131072

1.689308s, 4.96571MB/s
Read-ahead success for size 262144

1.433538s, 5.85168MB/s
Read-ahead success for size 524288

1.438148s, 5.83292MB/s
Read-ahead success for size 1048576