== sanity test 101b: check stride-io mode read-ahead =========================================================================== 01:36:30 (1783143390)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

0.696588s, 12.0424MB/s
Read-ahead success for size 8192

0.699544s, 11.9915MB/s
Read-ahead success for size 16384

0.763635s, 10.9851MB/s
Read-ahead success for size 32768

0.787523s, 10.6519MB/s
Read-ahead success for size 65536

0.664744s, 12.6193MB/s
Read-ahead success for size 131072

0.581533s, 14.425MB/s
Read-ahead success for size 262144

0.613091s, 13.6825MB/s
Read-ahead success for size 524288

0.540422s, 15.5223MB/s
Read-ahead success for size 1048576