== sanity test 101b: check stride-io mode read-ahead =========================================================================== 11:29:12 (1781623752)
striped dir -i1 -c2 -H crush  /mnt/lustre/d101b.sanity

0.768178s, 10.9201MB/s
Read-ahead success for size 8192

0.943645s, 8.88958MB/s
Read-ahead success for size 16384

1.024363s, 8.1891MB/s
Read-ahead success for size 32768

1.051303s, 7.97925MB/s
Read-ahead success for size 65536

0.779867s, 10.7565MB/s
Read-ahead success for size 131072

0.702186s, 11.9464MB/s
Read-ahead success for size 262144

0.682827s, 12.2851MB/s
Read-ahead success for size 524288

0.670723s, 12.5068MB/s
Read-ahead success for size 1048576