== sanity test 101b: check stride-io mode read-ahead =========================================================================== 12:35:21 (1761237321)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

1.084253s, 7.73676MB/s
Read-ahead success for size 8192

1.262226s, 6.64588MB/s
Read-ahead success for size 16384

1.262829s, 6.64271MB/s
Read-ahead success for size 32768

0.962894s, 8.71187MB/s
Read-ahead success for size 65536

1.087273s, 7.71527MB/s
Read-ahead success for size 131072

0.927508s, 9.04424MB/s
Read-ahead success for size 262144

0.895216s, 9.37048MB/s
Read-ahead success for size 524288

0.853284s, 9.83097MB/s
Read-ahead success for size 1048576