== sanity test 101b: check stride-io mode read-ahead =========================================================================== 21:06:41 (1786064801)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.670063s, 5.02293MB/s
Read-ahead success for size 8192

1.504366s, 5.57617MB/s
Read-ahead success for size 16384

1.785786s, 4.69743MB/s
Read-ahead success for size 32768

1.432671s, 5.85522MB/s
Read-ahead success for size 65536

1.396415s, 6.00725MB/s
Read-ahead success for size 131072

1.514070s, 5.54044MB/s
Read-ahead success for size 262144

1.134783s, 7.39226MB/s
Read-ahead success for size 524288

1.470083s, 5.70621MB/s
Read-ahead success for size 1048576