== sanity test 101b: check stride-io mode read-ahead =========================================================================== 22:53:08 (1743735188)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.585702s, 14.3223MB/s
Read-ahead success for size 8192

0.532428s, 15.7554MB/s
Read-ahead success for size 16384

0.619097s, 13.5497MB/s
Read-ahead success for size 32768

0.469718s, 17.8588MB/s
Read-ahead success for size 65536

0.393445s, 21.3209MB/s
Read-ahead success for size 131072

0.421075s, 19.9219MB/s
Read-ahead success for size 262144

0.357241s, 23.4816MB/s
Read-ahead success for size 524288

0.398966s, 21.0259MB/s
Read-ahead success for size 1048576