== sanity test 101b: check stride-io mode read-ahead =========================================================================== 20:40:35 (1763343635)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

1.437034s, 5.83745MB/s
Read-ahead success for size 8192

1.534346s, 5.46722MB/s
Read-ahead success for size 16384

1.385329s, 6.05532MB/s
Read-ahead success for size 32768

1.054302s, 7.95655MB/s
Read-ahead success for size 65536

1.063308s, 7.88916MB/s
Read-ahead success for size 131072

0.822246s, 10.2021MB/s
Read-ahead success for size 262144

0.794483s, 10.5586MB/s
Read-ahead success for size 524288

0.824942s, 10.1687MB/s
Read-ahead success for size 1048576