== sanity test 101b: check stride-io mode read-ahead =========================================================================== 14:23:57 (1788287037)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.961182s, 4.27732MB/s
Read-ahead success for size 8192

1.686417s, 4.97422MB/s
Read-ahead success for size 16384

2.229622s, 3.76235MB/s
Read-ahead success for size 32768

2.174534s, 3.85766MB/s
Read-ahead success for size 65536

1.452590s, 5.77493MB/s
Read-ahead success for size 131072

1.705988s, 4.91716MB/s
Read-ahead success for size 262144

1.158882s, 7.23854MB/s
Read-ahead success for size 524288

1.011563s, 8.29272MB/s
Read-ahead success for size 1048576