== sanity test 101b: check stride-io mode read-ahead =========================================================================== 17:09:52 (1786482592)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.097747s, 7.64166MB/s
Read-ahead success for size 8192

1.086878s, 7.71808MB/s
Read-ahead success for size 16384

1.221710s, 6.86628MB/s
Read-ahead success for size 32768

0.949653s, 8.83334MB/s
Read-ahead success for size 65536

0.792015s, 10.5915MB/s
Read-ahead success for size 131072

0.753746s, 11.1292MB/s
Read-ahead success for size 262144

0.845489s, 9.92161MB/s
Read-ahead success for size 524288

0.685929s, 12.2296MB/s
Read-ahead success for size 1048576