== sanity test 101b: check stride-io mode read-ahead =========================================================================== 15:41:23 (1786650083)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.865552s, 4.49658MB/s
Read-ahead success for size 8192

1.915888s, 4.37844MB/s
Read-ahead success for size 16384

2.452100s, 3.42099MB/s
Read-ahead success for size 32768

2.436764s, 3.44252MB/s
Read-ahead success for size 65536

1.487434s, 5.63965MB/s
Read-ahead success for size 131072

1.586250s, 5.28833MB/s
Read-ahead success for size 262144

1.011972s, 8.28937MB/s
Read-ahead success for size 524288

1.648990s, 5.08712MB/s
Read-ahead success for size 1048576