== sanity test 101b: check stride-io mode read-ahead =========================================================================== 14:06:06 (1752689166)
striped dir -i1 -c2 -H crush2 /mnt/lustre/d101b.sanity

0.619327s, 13.5447MB/s
Read-ahead success for size 8192

0.595157s, 14.0948MB/s
Read-ahead success for size 16384

0.633727s, 13.2369MB/s
Read-ahead success for size 32768

0.611572s, 13.7165MB/s
Read-ahead success for size 65536

0.519702s, 16.1412MB/s
Read-ahead success for size 131072

0.492635s, 17.028MB/s
Read-ahead success for size 262144

0.447125s, 18.7612MB/s
Read-ahead success for size 524288

0.470313s, 17.8362MB/s
Read-ahead success for size 1048576