== sanity test 101b: check stride-io mode read-ahead =========================================================================== 15:52:28 (1787601148)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.687673s, 4.97052MB/s
Read-ahead success for size 8192

1.645464s, 5.09802MB/s
Read-ahead success for size 16384

2.041875s, 4.10829MB/s
Read-ahead success for size 32768

1.795175s, 4.67286MB/s
Read-ahead success for size 65536

1.875772s, 4.47208MB/s
Read-ahead success for size 131072

1.683558s, 4.98267MB/s
Read-ahead success for size 262144

1.616260s, 5.19014MB/s
Read-ahead success for size 524288

1.262209s, 6.64597MB/s
Read-ahead success for size 1048576