== sanity test 101b: check stride-io mode read-ahead =========================================================================== 13:01:27 (1772474487)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.836143s, 10.0325MB/s
Read-ahead success for size 8192

0.834235s, 10.0554MB/s
Read-ahead success for size 16384

0.986614s, 8.50242MB/s
Read-ahead success for size 32768

0.821693s, 10.2089MB/s
Read-ahead success for size 65536

0.831364s, 10.0902MB/s
Read-ahead success for size 131072

0.700309s, 11.9784MB/s
Read-ahead success for size 262144

0.542203s, 15.4713MB/s
Read-ahead success for size 524288

0.552414s, 15.1854MB/s
Read-ahead success for size 1048576