== sanity test 101b: check stride-io mode read-ahead =========================================================================== 21:59:51 (1787709591)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

2.025392s, 4.14172MB/s
Read-ahead success for size 8192

2.879369s, 2.91335MB/s
Read-ahead success for size 16384

2.954362s, 2.8394MB/s
Read-ahead success for size 32768

2.840019s, 2.95372MB/s
Read-ahead success for size 65536

2.453588s, 3.41891MB/s
Read-ahead success for size 131072

2.152909s, 3.89641MB/s
Read-ahead success for size 262144

1.824666s, 4.59734MB/s
Read-ahead success for size 524288

1.470792s, 5.70346MB/s
Read-ahead success for size 1048576