== sanity test 101b: check stride-io mode read-ahead =========================================================================== 13:42:57 (1783964577)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

1.900349s, 4.41425MB/s
Read-ahead success for size 8192

1.781543s, 4.70862MB/s
Read-ahead success for size 16384

1.937966s, 4.32856MB/s
Read-ahead success for size 32768

1.604823s, 5.22712MB/s
Read-ahead success for size 65536

1.296757s, 6.46891MB/s
Read-ahead success for size 131072

1.557257s, 5.38678MB/s
Read-ahead success for size 262144

1.437770s, 5.83446MB/s
Read-ahead success for size 524288

1.348235s, 6.22192MB/s
Read-ahead success for size 1048576