== sanity test 101b: check stride-io mode read-ahead =========================================================================== 10:29:56 (1789050596)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.690488s, 4.96224MB/s
Read-ahead success for size 8192

1.316045s, 6.3741MB/s
Read-ahead success for size 16384

1.439600s, 5.82704MB/s
Read-ahead success for size 32768

1.521954s, 5.51174MB/s
Read-ahead success for size 65536

1.539553s, 5.44873MB/s
Read-ahead success for size 131072

0.957918s, 8.75713MB/s
Read-ahead success for size 262144

0.817593s, 10.2601MB/s
Read-ahead success for size 524288

0.976466s, 8.59078MB/s
Read-ahead success for size 1048576