== sanity test 101b: check stride-io mode read-ahead =========================================================================== 10:31:59 (1787581919)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

1.549492s, 5.41378MB/s
Read-ahead success for size 8192

2.066210s, 4.0599MB/s
Read-ahead success for size 16384

1.968275s, 4.26191MB/s
Read-ahead success for size 32768

1.808523s, 4.63838MB/s
Read-ahead success for size 65536

1.376850s, 6.09261MB/s
Read-ahead success for size 131072

1.828894s, 4.58671MB/s
Read-ahead success for size 262144

1.694495s, 4.95051MB/s
Read-ahead success for size 524288

1.393155s, 6.0213MB/s
Read-ahead success for size 1048576