== sanity test 101b: check stride-io mode read-ahead =========================================================================== 06:15:40 (1773656140)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

1.445069s, 5.80499MB/s
Read-ahead success for size 8192

2.046326s, 4.09935MB/s
Read-ahead success for size 16384

1.623401s, 5.1673MB/s
Read-ahead success for size 32768

1.776082s, 4.7231MB/s
Read-ahead success for size 65536

1.478894s, 5.67222MB/s
Read-ahead success for size 131072

1.404765s, 5.97154MB/s
Read-ahead success for size 262144

1.363347s, 6.15295MB/s
Read-ahead success for size 524288

1.210971s, 6.92717MB/s
Read-ahead success for size 1048576