== sanity test 101b: check stride-io mode read-ahead =========================================================================== 09:42:23 (1773236543)

0.657265s, 12.7629MB/s
Read-ahead success for size 8192

0.628470s, 13.3477MB/s
Read-ahead success for size 16384

0.668480s, 12.5488MB/s
Read-ahead success for size 32768

0.616999s, 13.5958MB/s
Read-ahead success for size 65536

0.540867s, 15.5096MB/s
Read-ahead success for size 131072

0.562790s, 14.9054MB/s
Read-ahead success for size 262144

0.475673s, 17.6352MB/s
Read-ahead success for size 524288

0.475002s, 17.6602MB/s
Read-ahead success for size 1048576