== sanity test 101b: check stride-io mode read-ahead =========================================================================== 05:38:10 (1730803090)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

5.965407s, 1.40621MB/s
Read-ahead success for size 8192

7.338753s, 1.14306MB/s
Read-ahead success for size 16384

6.880129s, 1.21925MB/s
Read-ahead success for size 32768

6.961571s, 1.20499MB/s
Read-ahead success for size 65536

9.227258s, 0.909112MB/s
Read-ahead success for size 131072

8.770382s, 0.95647MB/s
Read-ahead success for size 262144

7.240464s, 1.15857MB/s
Read-ahead success for size 524288

5.773634s, 1.45292MB/s
Read-ahead success for size 1048576