== sanity test 101b: check stride-io mode read-ahead =========================================================================== 21:07:43 (1777424863)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.522779s, 16.0462MB/s
Read-ahead success for size 8192

0.528722s, 15.8658MB/s
Read-ahead success for size 16384

0.607070s, 13.8182MB/s
Read-ahead success for size 32768

0.578429s, 14.5024MB/s
Read-ahead success for size 65536

0.501242s, 16.7356MB/s
Read-ahead success for size 131072

0.428132s, 19.5935MB/s
Read-ahead success for size 262144

0.433646s, 19.3444MB/s
Read-ahead success for size 524288

0.496367s, 16.9MB/s
Read-ahead success for size 1048576