== sanity test 101b: check stride-io mode read-ahead =========================================================================== 16:28:32 (1748982512)

0.077159s, 108.718MB/s
Read-ahead success for size 8192

0.048663s, 172.382MB/s
Read-ahead success for size 16384

0.048291s, 173.71MB/s
Read-ahead success for size 32768

0.045017s, 186.343MB/s
Read-ahead success for size 65536

0.048866s, 171.666MB/s
Read-ahead success for size 131072

0.047294s, 177.372MB/s
Read-ahead success for size 262144

0.052773s, 158.956MB/s
Read-ahead success for size 524288

0.060564s, 138.508MB/s
Read-ahead success for size 1048576