== sanity test 101b: check stride-io mode read-ahead =========================================================================== 02:19:17 (1738480757)
striped dir -i1 -c2 -H fnv_1a_64 /mnt/lustre/d101b.sanity

0.455719s, 18.4074MB/s
Read-ahead success for size 8192

0.532576s, 15.751MB/s
Read-ahead success for size 16384

0.663369s, 12.6455MB/s
Read-ahead success for size 32768

0.392512s, 21.3716MB/s
Read-ahead success for size 65536

0.431517s, 19.4398MB/s
Read-ahead success for size 131072

0.343491s, 24.4216MB/s
Read-ahead success for size 262144

0.375327s, 22.3501MB/s
Read-ahead success for size 524288

0.301259s, 27.8452MB/s
Read-ahead success for size 1048576