== sanity test 101b: check stride-io mode read-ahead =========================================================================== 21:19:36 (1708827576)
striped dir -i1 -c2 -H crush2 /mnt/lustre/d101b.sanity

0.223103s, 37.5997MB/s
Read-ahead success for size 8192

0.213856s, 39.2255MB/s
Read-ahead success for size 16384

0.203744s, 41.1723MB/s
Read-ahead success for size 32768

0.207946s, 40.3403MB/s
Read-ahead success for size 65536

0.230067s, 36.4616MB/s
Read-ahead success for size 131072

0.236659s, 35.446MB/s
Read-ahead success for size 262144

0.260825s, 32.1618MB/s
Read-ahead success for size 524288

0.314015s, 26.714MB/s
Read-ahead success for size 1048576