== sanity test 101b: check stride-io mode read-ahead =========================================================================== 23:51:49 (1746157909)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.755546s, 11.1027MB/s
Read-ahead success for size 8192

0.717465s, 11.692MB/s
Read-ahead success for size 16384

0.772809s, 10.8547MB/s
Read-ahead success for size 32768

0.612884s, 13.6871MB/s
Read-ahead success for size 65536

0.509536s, 16.4632MB/s
Read-ahead success for size 131072

0.487561s, 17.2052MB/s
Read-ahead success for size 262144

0.472645s, 17.7482MB/s
Read-ahead success for size 524288

0.371078s, 22.6061MB/s
Read-ahead success for size 1048576