== sanity test 101b: check stride-io mode read-ahead =========================================================================== 02:01:42 (1788588102)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

2.223744s, 3.77229MB/s
Read-ahead success for size 8192

2.405184s, 3.48772MB/s
Read-ahead success for size 16384

2.314932s, 3.6237MB/s
Read-ahead success for size 32768

2.293597s, 3.6574MB/s
Read-ahead success for size 65536

1.733718s, 4.83851MB/s
Read-ahead success for size 131072

3.304437s, 2.53859MB/s
Read-ahead success for size 262144

2.419067s, 3.4677MB/s
Read-ahead success for size 524288

1.550999s, 5.40852MB/s
Read-ahead success for size 1048576