== sanity test 101b: check stride-io mode read-ahead =========================================================================== 06:24:08 (1787394248)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.768960s, 4.74211MB/s
Read-ahead success for size 8192

1.530271s, 5.48178MB/s
Read-ahead success for size 16384

1.886029s, 4.44776MB/s
Read-ahead success for size 32768

2.072968s, 4.04667MB/s
Read-ahead success for size 65536

1.528449s, 5.48831MB/s
Read-ahead success for size 131072

1.413615s, 5.93415MB/s
Read-ahead success for size 262144

1.277931s, 6.56421MB/s
Read-ahead success for size 524288

1.332611s, 6.29487MB/s
Read-ahead success for size 1048576