== sanity test 101b: check stride-io mode read-ahead =========================================================================== 07:38:52 (1764938332)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.331533s, 25.3025MB/s
Read-ahead success for size 8192

0.351557s, 23.8613MB/s
Read-ahead success for size 16384

0.307285s, 27.2991MB/s
Read-ahead success for size 32768

0.208123s, 40.306MB/s
Read-ahead success for size 65536

0.399279s, 21.0094MB/s
Read-ahead success for size 131072

0.328123s, 25.5654MB/s
Read-ahead success for size 262144

0.315006s, 26.63MB/s
Read-ahead success for size 524288

0.312106s, 26.8774MB/s
Read-ahead success for size 1048576