== sanity test 101b: check stride-io mode read-ahead =========================================================================== 21:56:19 (1763348179)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

1.116019s, 7.51655MB/s
Read-ahead success for size 8192

1.211710s, 6.92295MB/s
Read-ahead success for size 16384

1.412066s, 5.94066MB/s
Read-ahead success for size 32768

1.100121s, 7.62517MB/s
Read-ahead success for size 65536

1.134712s, 7.39272MB/s
Read-ahead success for size 131072

1.050303s, 7.98685MB/s
Read-ahead success for size 262144

0.816062s, 10.2794MB/s
Read-ahead success for size 524288

0.808929s, 10.37MB/s
Read-ahead success for size 1048576