== sanity test 101b: check stride-io mode read-ahead =========================================================================== 13:55:41 (1788890141)
striped dir -i1 -c2 -H crush2  /mnt/lustre/d101b.sanity

0.546168s, 15.359MB/s
Read-ahead success for size 8192

0.549384s, 15.2691MB/s
Read-ahead success for size 16384

0.583717s, 14.371MB/s
Read-ahead success for size 32768

0.551077s, 15.2222MB/s
Read-ahead success for size 65536

0.504960s, 16.6124MB/s
Read-ahead success for size 131072

0.491886s, 17.054MB/s
Read-ahead success for size 262144

0.561177s, 14.9482MB/s
Read-ahead success for size 524288

0.526895s, 15.9208MB/s
Read-ahead success for size 1048576