== sanity test 101b: check stride-io mode read-ahead =========================================================================== 09:18:04 (1788527884)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.846920s, 4.54194MB/s
Read-ahead success for size 8192

1.841544s, 4.5552MB/s
Read-ahead success for size 16384

1.667769s, 5.02984MB/s
Read-ahead success for size 32768

1.379979s, 6.07879MB/s
Read-ahead success for size 65536

1.549756s, 5.41286MB/s
Read-ahead success for size 131072

1.275673s, 6.57583MB/s
Read-ahead success for size 262144

1.237494s, 6.77871MB/s
Read-ahead success for size 524288

1.213333s, 6.91369MB/s
Read-ahead success for size 1048576