== sanity test 101b: check stride-io mode read-ahead =========================================================================== 23:48:08 (1769057288)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

1.491412s, 5.62461MB/s
Read-ahead success for size 8192

1.501326s, 5.58747MB/s
Read-ahead success for size 16384

1.231729s, 6.81043MB/s
Read-ahead success for size 32768

1.191920s, 7.0379MB/s
Read-ahead success for size 65536

1.185223s, 7.07766MB/s
Read-ahead success for size 131072

1.069106s, 7.84638MB/s
Read-ahead success for size 262144

0.983162s, 8.53227MB/s
Read-ahead success for size 524288

0.982192s, 8.5407MB/s
Read-ahead success for size 1048576