== sanity test 101b: check stride-io mode read-ahead =========================================================================== 02:28:29 (1790922509)
striped dir -i1 -c2 -H crush  /mnt/lustre/d101b.sanity

1.220222s, 6.87466MB/s
Read-ahead success for size 8192

1.414766s, 5.92933MB/s
Read-ahead success for size 16384

1.759037s, 4.76886MB/s
Read-ahead success for size 32768

1.858411s, 4.51386MB/s
Read-ahead success for size 65536

1.217761s, 6.88855MB/s
Read-ahead success for size 131072

1.313607s, 6.38593MB/s
Read-ahead success for size 262144

1.341149s, 6.25479MB/s
Read-ahead success for size 524288

1.071908s, 7.82587MB/s
Read-ahead success for size 1048576