== sanity test 101b: check stride-io mode read-ahead =========================================================================== 03:41:26 (1722238886)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

0.058840s, 142.566MB/s
Read-ahead success for size 8192

0.063468s, 132.171MB/s
Read-ahead success for size 16384

0.063675s, 131.741MB/s
Read-ahead success for size 32768

0.072496s, 115.711MB/s
Read-ahead success for size 65536

0.073315s, 114.419MB/s
Read-ahead success for size 131072

0.090931s, 92.2525MB/s
Read-ahead success for size 262144

0.071546s, 117.248MB/s
Read-ahead success for size 524288

0.077773s, 107.86MB/s
Read-ahead success for size 1048576