== sanity test 101b: check stride-io mode read-ahead =========================================================================== 13:33:14 (1747848794)

0.464877s, 18.0448MB/s
Read-ahead success for size 8192

0.431709s, 19.4312MB/s
Read-ahead success for size 16384

0.479390s, 17.4985MB/s
Read-ahead success for size 32768

0.421861s, 19.8848MB/s
Read-ahead success for size 65536

0.376776s, 22.2642MB/s
Read-ahead success for size 131072

0.353641s, 23.7207MB/s
Read-ahead success for size 262144

0.315677s, 26.5734MB/s
Read-ahead success for size 524288

0.324540s, 25.8477MB/s
Read-ahead success for size 1048576