== sanity test 101b: check stride-io mode read-ahead =========================================================================== 12:00:56 (1789056056)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

2.378373s, 3.52704MB/s
Read-ahead success for size 8192

2.040463s, 4.11113MB/s
Read-ahead success for size 16384

2.458447s, 3.41216MB/s
Read-ahead success for size 32768

2.121080s, 3.95488MB/s
Read-ahead success for size 65536

1.462825s, 5.73453MB/s
Read-ahead success for size 131072

1.124396s, 7.46055MB/s
Read-ahead success for size 262144

1.902737s, 4.40871MB/s
Read-ahead success for size 524288

0.917793s, 9.13998MB/s
Read-ahead success for size 1048576