== sanity test 101b: check stride-io mode read-ahead =========================================================================== 13:45:05 (1783964705)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.217298s, 6.89117MB/s
Read-ahead success for size 8192

1.280313s, 6.552MB/s
Read-ahead success for size 16384

1.969608s, 4.25902MB/s
Read-ahead success for size 32768

1.410353s, 5.94788MB/s
Read-ahead success for size 65536

1.352899s, 6.20047MB/s
Read-ahead success for size 131072

1.129617s, 7.42606MB/s
Read-ahead success for size 262144

0.959646s, 8.74136MB/s
Read-ahead success for size 524288

0.912908s, 9.18889MB/s
Read-ahead success for size 1048576