== sanity test 101b: check stride-io mode read-ahead =========================================================================== 15:52:48 (1788465168)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.929246s, 4.34813MB/s
Read-ahead success for size 8192

1.883364s, 4.45406MB/s
Read-ahead success for size 16384

2.432622s, 3.44838MB/s
Read-ahead success for size 32768

2.207213s, 3.80054MB/s
Read-ahead success for size 65536

1.892822s, 4.4318MB/s
Read-ahead success for size 131072

1.652106s, 5.07752MB/s
Read-ahead success for size 262144

1.127727s, 7.43851MB/s
Read-ahead success for size 524288

1.603265s, 5.2322MB/s
Read-ahead success for size 1048576