== sanity test 101b: check stride-io mode read-ahead =========================================================================== 15:20:46 (1764793246)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.704853s, 11.9012MB/s
Read-ahead success for size 8192

0.647923s, 12.9469MB/s
Read-ahead success for size 16384

0.655165s, 12.8038MB/s
Read-ahead success for size 32768

0.581371s, 14.429MB/s
Read-ahead success for size 65536

0.541716s, 15.4853MB/s
Read-ahead success for size 131072

0.514170s, 16.3149MB/s
Read-ahead success for size 262144

0.509825s, 16.4539MB/s
Read-ahead success for size 524288

0.461776s, 18.166MB/s
Read-ahead success for size 1048576