== sanity test 101b: check stride-io mode read-ahead =========================================================================== 04:38:11 (1787301491)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.657007s, 5.06251MB/s
Read-ahead success for size 8192

2.181919s, 3.8446MB/s
Read-ahead success for size 16384

2.301041s, 3.64557MB/s
Read-ahead success for size 32768

1.879632s, 4.4629MB/s
Read-ahead success for size 65536

1.772036s, 4.73388MB/s
Read-ahead success for size 131072

1.727418s, 4.85615MB/s
Read-ahead success for size 262144

1.078486s, 7.77813MB/s
Read-ahead success for size 524288

1.865165s, 4.49752MB/s
Read-ahead success for size 1048576