== sanity test 101b: check stride-io mode read-ahead =========================================================================== 05:36:38 (1781256998)
striped dir -i1 -c2 -H fnv_1a_64 /mnt/lustre/d101b.sanity

0.507932s, 16.5152MB/s
Read-ahead success for size 8192

0.252339s, 33.2434MB/s
Read-ahead success for size 16384

0.348035s, 24.1028MB/s
Read-ahead success for size 32768

0.268070s, 31.2926MB/s
Read-ahead success for size 65536

0.345347s, 24.2904MB/s
Read-ahead success for size 131072

0.459005s, 18.2756MB/s
Read-ahead success for size 262144

0.390330s, 21.4911MB/s
Read-ahead success for size 524288

0.433383s, 19.3561MB/s
Read-ahead success for size 1048576