== sanity test 101b: check stride-io mode read-ahead =========================================================================== 22:11:55 (1788919915)

0.621609s, 13.495MB/s
Read-ahead success for size 8192

0.643698s, 13.0319MB/s
Read-ahead success for size 16384

0.805549s, 10.4135MB/s
Read-ahead success for size 32768

0.690614s, 12.1466MB/s
Read-ahead success for size 65536

0.638423s, 13.1396MB/s
Read-ahead success for size 131072

0.603429s, 13.9016MB/s
Read-ahead success for size 262144

0.549415s, 15.2683MB/s
Read-ahead success for size 524288

0.578188s, 14.5084MB/s
Read-ahead success for size 1048576