== sanity test 101b: check stride-io mode read-ahead =========================================================================== 18:58:53 (1746140333)
striped dir -i1 -c2 -H crush2 /mnt/lustre/d101b.sanity

0.940638s, 8.918MB/s
Read-ahead success for size 8192

0.890114s, 9.4242MB/s
Read-ahead success for size 16384

0.922827s, 9.09012MB/s
Read-ahead success for size 32768

0.843465s, 9.94541MB/s
Read-ahead success for size 65536

0.580893s, 14.4409MB/s
Read-ahead success for size 131072

0.647214s, 12.9611MB/s
Read-ahead success for size 262144

0.571942s, 14.6669MB/s
Read-ahead success for size 524288

0.677905s, 12.3743MB/s
Read-ahead success for size 1048576