== sanity test 101b: check stride-io mode read-ahead =========================================================================== 19:49:06 (1788652146)
striped dir -i1 -c2 -H crush2  /mnt/lustre/d101b.sanity

1.753248s, 4.78461MB/s
Read-ahead success for size 8192

1.861890s, 4.50543MB/s
Read-ahead success for size 16384

1.962015s, 4.27551MB/s
Read-ahead success for size 32768

1.843856s, 4.54949MB/s
Read-ahead success for size 65536

1.361380s, 6.16184MB/s
Read-ahead success for size 131072

1.570301s, 5.34204MB/s
Read-ahead success for size 262144

1.347060s, 6.22735MB/s
Read-ahead success for size 524288

1.211191s, 6.92592MB/s
Read-ahead success for size 1048576