== sanity test 101b: check stride-io mode read-ahead =========================================================================== 09:01:50 (1747400510)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.066982s, 125.237MB/s
Read-ahead success for size 8192

0.066137s, 126.837MB/s
Read-ahead success for size 16384

0.064137s, 130.792MB/s
Read-ahead success for size 32768

0.059898s, 140.048MB/s
Read-ahead success for size 65536

0.073469s, 114.179MB/s
Read-ahead success for size 131072

0.063307s, 132.507MB/s
Read-ahead success for size 262144

0.062324s, 134.597MB/s
Read-ahead success for size 524288

0.084594s, 99.1632MB/s
Read-ahead success for size 1048576