== sanity test 101b: check stride-io mode read-ahead =========================================================================== 23:24:39 (1788837879)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

1.396454s, 6.00708MB/s
Read-ahead success for size 8192

1.531811s, 5.47627MB/s
Read-ahead success for size 16384

1.793193s, 4.67803MB/s
Read-ahead success for size 32768

1.513311s, 5.54321MB/s
Read-ahead success for size 65536

1.386798s, 6.0489MB/s
Read-ahead success for size 131072

1.279597s, 6.55566MB/s
Read-ahead success for size 262144

1.103608s, 7.60108MB/s
Read-ahead success for size 524288

1.235964s, 6.7871MB/s
Read-ahead success for size 1048576