== sanity test 101b: check stride-io mode read-ahead =========================================================================== 05:26:11 (1744536371)
striped dir -i1 -c2 -H fnv_1a_64 /mnt/lustre/d101b.sanity

0.389694s, 21.5261MB/s
Read-ahead success for size 8192

0.366430s, 22.8928MB/s
Read-ahead success for size 16384

0.379115s, 22.1268MB/s
Read-ahead success for size 32768

0.358646s, 23.3897MB/s
Read-ahead success for size 65536

0.315287s, 26.6063MB/s
Read-ahead success for size 131072

0.278209s, 30.1522MB/s
Read-ahead success for size 262144

0.253301s, 33.1172MB/s
Read-ahead success for size 524288

0.254513s, 32.9594MB/s
Read-ahead success for size 1048576