== sanity test 101b: check stride-io mode read-ahead =========================================================================== 22:21:31 (1746066091)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.829894s, 10.108MB/s
Read-ahead success for size 8192

0.751204s, 11.1669MB/s
Read-ahead success for size 16384

0.920111s, 9.11695MB/s
Read-ahead success for size 32768

0.670123s, 12.518MB/s
Read-ahead success for size 65536

0.649409s, 12.9173MB/s
Read-ahead success for size 131072

0.493388s, 17.0021MB/s
Read-ahead success for size 262144

0.518047s, 16.1928MB/s
Read-ahead success for size 524288

0.477022s, 17.5854MB/s
Read-ahead success for size 1048576