== sanity test 101b: check stride-io mode read-ahead =========================================================================== 22:22:43 (1775874163)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

0.842972s, 9.95123MB/s
Read-ahead success for size 8192

0.921875s, 9.09951MB/s
Read-ahead success for size 16384

1.073554s, 7.81387MB/s
Read-ahead success for size 32768

0.854048s, 9.82217MB/s
Read-ahead success for size 65536

0.797840s, 10.5141MB/s
Read-ahead success for size 131072

0.759951s, 11.0384MB/s
Read-ahead success for size 262144

0.665718s, 12.6008MB/s
Read-ahead success for size 524288

0.657382s, 12.7606MB/s
Read-ahead success for size 1048576