== sanity test 101b: check stride-io mode read-ahead =========================================================================== 00:42:39 (1761972159)
striped dir -i1 -c2 -H fnv_1a_64 /mnt/lustre/d101b.sanity

0.582520s, 14.4005MB/s
Read-ahead success for size 8192

0.580015s, 14.4627MB/s
Read-ahead success for size 16384

0.646420s, 12.977MB/s
Read-ahead success for size 32768

0.595253s, 14.0925MB/s
Read-ahead success for size 65536

0.523012s, 16.039MB/s
Read-ahead success for size 131072

0.464973s, 18.0411MB/s
Read-ahead success for size 262144

0.471433s, 17.7938MB/s
Read-ahead success for size 524288

0.507248s, 16.5375MB/s
Read-ahead success for size 1048576