== sanity test 101b: check stride-io mode read-ahead =========================================================================== 00:21:55 (1744086115)
striped dir -i1 -c2 -H fnv_1a_64 /mnt/lustre/d101b.sanity

0.325520s, 25.7699MB/s
Read-ahead success for size 8192

0.371190s, 22.5992MB/s
Read-ahead success for size 16384

0.609205s, 13.7698MB/s
Read-ahead success for size 32768

0.443494s, 18.9148MB/s
Read-ahead success for size 65536

0.381621s, 21.9815MB/s
Read-ahead success for size 131072

0.292263s, 28.7023MB/s
Read-ahead success for size 262144

0.383538s, 21.8716MB/s
Read-ahead success for size 524288

0.285307s, 29.402MB/s
Read-ahead success for size 1048576