== sanity test 101b: check stride-io mode read-ahead =========================================================================== 05:22:40 (1788686560)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

1.777789s, 4.71856MB/s
Read-ahead success for size 8192

1.412515s, 5.93877MB/s
Read-ahead success for size 16384

2.058467s, 4.07517MB/s
Read-ahead success for size 32768

1.622133s, 5.17134MB/s
Read-ahead success for size 65536

1.973707s, 4.25018MB/s
Read-ahead success for size 131072

1.739672s, 4.82195MB/s
Read-ahead success for size 262144

1.345211s, 6.2359MB/s
Read-ahead success for size 524288

0.828443s, 10.1258MB/s
Read-ahead success for size 1048576