== sanity test 101b: check stride-io mode read-ahead =========================================================================== 04:03:54 (1773734634)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

2.339500s, 3.58564MB/s
Read-ahead success for size 8192

2.145147s, 3.9105MB/s
Read-ahead success for size 16384

2.325949s, 3.60653MB/s
Read-ahead success for size 32768

2.762241s, 3.03688MB/s
Read-ahead success for size 65536

2.525621s, 3.3214MB/s
Read-ahead success for size 131072

1.544881s, 5.42994MB/s
Read-ahead success for size 262144

1.857773s, 4.51541MB/s
Read-ahead success for size 524288

1.846026s, 4.54414MB/s
Read-ahead success for size 1048576