== sanity test 101b: check stride-io mode read-ahead =========================================================================== 14:47:04 (1790880424)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

0.460066s, 18.2335MB/s
Read-ahead success for size 8192

0.460311s, 18.2238MB/s
Read-ahead success for size 16384

0.498254s, 16.836MB/s
Read-ahead success for size 32768

0.498955s, 16.8124MB/s
Read-ahead success for size 65536

0.446561s, 18.7849MB/s
Read-ahead success for size 131072

0.415272s, 20.2003MB/s
Read-ahead success for size 262144

0.412898s, 20.3164MB/s
Read-ahead success for size 524288

0.397600s, 21.0981MB/s
Read-ahead success for size 1048576