== sanity test 101b: check stride-io mode read-ahead =========================================================================== 01:24:29 (1787117069)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

1.389268s, 6.03815MB/s
Read-ahead success for size 8192

1.821336s, 4.60574MB/s
Read-ahead success for size 16384

2.083933s, 4.02537MB/s
Read-ahead success for size 32768

2.292234s, 3.65958MB/s
Read-ahead success for size 65536

1.121054s, 7.48279MB/s
Read-ahead success for size 131072

1.248340s, 6.71981MB/s
Read-ahead success for size 262144

1.072237s, 7.82346MB/s
Read-ahead success for size 524288

1.296423s, 6.47058MB/s
Read-ahead success for size 1048576