== sanity test 101b: check stride-io mode read-ahead =========================================================================== 07:12:49 (1787397169)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.718691s, 4.88081MB/s
Read-ahead success for size 8192

1.400148s, 5.99123MB/s
Read-ahead success for size 16384

1.748955s, 4.79635MB/s
Read-ahead success for size 32768

2.145856s, 3.90921MB/s
Read-ahead success for size 65536

1.262126s, 6.64641MB/s
Read-ahead success for size 131072

1.364033s, 6.14986MB/s
Read-ahead success for size 262144

1.201633s, 6.98101MB/s
Read-ahead success for size 524288

1.433512s, 5.85179MB/s
Read-ahead success for size 1048576