== sanity test 101b: check stride-io mode read-ahead =========================================================================== 11:28:14 (1783351694)
striped dir -i1 -c2 -H crush2  /mnt/lustre/d101b.sanity

1.135721s, 7.38615MB/s
Read-ahead success for size 8192

1.248354s, 6.71973MB/s
Read-ahead success for size 16384

1.483290s, 5.65541MB/s
Read-ahead success for size 32768

0.997035s, 8.41355MB/s
Read-ahead success for size 65536

1.019988s, 8.22422MB/s
Read-ahead success for size 131072

0.819926s, 10.2309MB/s
Read-ahead success for size 262144

0.842998s, 9.95092MB/s
Read-ahead success for size 524288

0.787406s, 10.6535MB/s
Read-ahead success for size 1048576