== sanity test 101b: check stride-io mode read-ahead =========================================================================== 22:59:33 (1764734373)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

1.835095s, 4.57121MB/s
Read-ahead success for size 8192

2.008938s, 4.17564MB/s
Read-ahead success for size 16384

2.257376s, 3.71609MB/s
Read-ahead success for size 32768

2.072021s, 4.04851MB/s
Read-ahead success for size 65536

1.677334s, 5.00116MB/s
Read-ahead success for size 131072

1.504231s, 5.57668MB/s
Read-ahead success for size 262144

1.150900s, 7.28874MB/s
Read-ahead success for size 524288

1.043140s, 8.04169MB/s
Read-ahead success for size 1048576