== sanity test 101b: check stride-io mode read-ahead =========================================================================== 15:58:41 (1760126321)
striped dir -i1 -c2 -H crush2 /mnt/lustre/d101b.sanity

0.829939s, 10.1075MB/s
Read-ahead success for size 8192

0.770282s, 10.8903MB/s
Read-ahead success for size 16384

0.852448s, 9.84061MB/s
Read-ahead success for size 32768

0.707544s, 11.856MB/s
Read-ahead success for size 65536

0.704833s, 11.9016MB/s
Read-ahead success for size 131072

0.609215s, 13.7695MB/s
Read-ahead success for size 262144

0.537013s, 15.6209MB/s
Read-ahead success for size 524288

0.577269s, 14.5315MB/s
Read-ahead success for size 1048576