== sanity test 101b: check stride-io mode read-ahead =========================================================================== 00:48:59 (1788583739)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

1.574973s, 5.32619MB/s
Read-ahead success for size 8192

1.760201s, 4.76571MB/s
Read-ahead success for size 16384

1.684297s, 4.98048MB/s
Read-ahead success for size 32768

1.681197s, 4.98966MB/s
Read-ahead success for size 65536

1.672390s, 5.01594MB/s
Read-ahead success for size 131072

1.420648s, 5.90478MB/s
Read-ahead success for size 262144

1.096212s, 7.65236MB/s
Read-ahead success for size 524288

1.256613s, 6.67557MB/s
Read-ahead success for size 1048576