== sanity test 101b: check stride-io mode read-ahead =========================================================================== 18:49:46 (1788562186)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.715231s, 4.89066MB/s
Read-ahead success for size 8192

1.772880s, 4.73163MB/s
Read-ahead success for size 16384

2.482556s, 3.37902MB/s
Read-ahead success for size 32768

2.676289s, 3.13442MB/s
Read-ahead success for size 65536

1.751087s, 4.79051MB/s
Read-ahead success for size 131072

1.593292s, 5.26495MB/s
Read-ahead success for size 262144

1.399817s, 5.99265MB/s
Read-ahead success for size 524288

1.612636s, 5.2018MB/s
Read-ahead success for size 1048576