== sanity test 101b: check stride-io mode read-ahead =========================================================================== 20:47:17 (1768009637)
striped dir -i1 -c2 -H crush2 /mnt/lustre/d101b.sanity

0.611618s, 13.7154MB/s
Read-ahead success for size 8192

0.581932s, 14.4151MB/s
Read-ahead success for size 16384

0.554545s, 15.127MB/s
Read-ahead success for size 32768

0.571534s, 14.6774MB/s
Read-ahead success for size 65536

0.507275s, 16.5366MB/s
Read-ahead success for size 131072

0.466473s, 17.9831MB/s
Read-ahead success for size 262144

0.460185s, 18.2288MB/s
Read-ahead success for size 524288

0.458054s, 18.3136MB/s
Read-ahead success for size 1048576