== sanity test 101b: check stride-io mode read-ahead =========================================================================== 02:17:01 (1761286621)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

1.703807s, 4.92345MB/s
Read-ahead success for size 8192

1.328551s, 6.3141MB/s
Read-ahead success for size 16384

1.699687s, 4.93538MB/s
Read-ahead success for size 32768

1.337786s, 6.27052MB/s
Read-ahead success for size 65536

1.469525s, 5.70838MB/s
Read-ahead success for size 131072

1.171281s, 7.16191MB/s
Read-ahead success for size 262144

1.184528s, 7.08181MB/s
Read-ahead success for size 524288

0.888819s, 9.43793MB/s
Read-ahead success for size 1048576