== sanity test 101b: check stride-io mode read-ahead =========================================================================== 23:37:58 (1781235478)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.853522s, 4.52577MB/s
Read-ahead success for size 8192

1.882531s, 4.45603MB/s
Read-ahead success for size 16384

2.307771s, 3.63494MB/s
Read-ahead success for size 32768

1.911274s, 4.38901MB/s
Read-ahead success for size 65536

1.460521s, 5.74357MB/s
Read-ahead success for size 131072

1.595977s, 5.2561MB/s
Read-ahead success for size 262144

1.362132s, 6.15844MB/s
Read-ahead success for size 524288

1.294140s, 6.48199MB/s
Read-ahead success for size 1048576