== sanity test 101b: check stride-io mode read-ahead =========================================================================== 16:46:24 (1773607584)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

1.980160s, 4.23633MB/s
Read-ahead success for size 8192

1.883520s, 4.45369MB/s
Read-ahead success for size 16384

2.251692s, 3.72547MB/s
Read-ahead success for size 32768

1.852864s, 4.52737MB/s
Read-ahead success for size 65536

1.219593s, 6.8782MB/s
Read-ahead success for size 131072

1.438432s, 5.83177MB/s
Read-ahead success for size 262144

1.568693s, 5.34751MB/s
Read-ahead success for size 524288

1.172588s, 7.15393MB/s
Read-ahead success for size 1048576