== sanity test 101b: check stride-io mode read-ahead =========================================================================== 23:04:41 (1763352281)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.840213s, 9.98391MB/s
Read-ahead success for size 8192

0.787271s, 10.6553MB/s
Read-ahead success for size 16384

0.833711s, 10.0618MB/s
Read-ahead success for size 32768

0.745393s, 11.2539MB/s
Read-ahead success for size 65536

0.681564s, 12.3079MB/s
Read-ahead success for size 131072

0.648460s, 12.9362MB/s
Read-ahead success for size 262144

0.592548s, 14.1568MB/s
Read-ahead success for size 524288

0.575476s, 14.5768MB/s
Read-ahead success for size 1048576