== sanity test 101b: check stride-io mode read-ahead =========================================================================== 21:19:15 (1708827555)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.248978s, 33.6922MB/s
Read-ahead success for size 8192

0.266556s, 31.4703MB/s
Read-ahead success for size 16384

0.227618s, 36.8539MB/s
Read-ahead success for size 32768

0.262123s, 32.0026MB/s
Read-ahead success for size 65536

0.257182s, 32.6174MB/s
Read-ahead success for size 131072

0.287739s, 29.1535MB/s
Read-ahead success for size 262144

0.331467s, 25.3075MB/s
Read-ahead success for size 524288

0.387906s, 21.6254MB/s
Read-ahead success for size 1048576