== sanity test 101b: check stride-io mode read-ahead =========================================================================== 08:44:43 (1788871483)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.315311s, 6.37766MB/s
Read-ahead success for size 8192

1.325783s, 6.32729MB/s
Read-ahead success for size 16384

1.328006s, 6.31669MB/s
Read-ahead success for size 32768

1.446641s, 5.79868MB/s
Read-ahead success for size 65536

1.346559s, 6.22966MB/s
Read-ahead success for size 131072

1.160277s, 7.22983MB/s
Read-ahead success for size 262144

1.108739s, 7.5659MB/s
Read-ahead success for size 524288

1.049007s, 7.99671MB/s
Read-ahead success for size 1048576