== sanity test 101b: check stride-io mode read-ahead =========================================================================== 18:02:22 (1768258942)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

2.096808s, 4.00066MB/s
Read-ahead success for size 8192

1.695665s, 4.94709MB/s
Read-ahead success for size 16384

1.717923s, 4.88299MB/s
Read-ahead success for size 32768

1.609084s, 5.21328MB/s
Read-ahead success for size 65536

1.816123s, 4.61896MB/s
Read-ahead success for size 131072

1.612103s, 5.20352MB/s
Read-ahead success for size 262144

1.235521s, 6.78953MB/s
Read-ahead success for size 524288

1.402489s, 5.98123MB/s
Read-ahead success for size 1048576