PCi Express - Latency

Hi

I'm using the chinning dma reference design generated by the MegaWizard tool.

(Hard IP V 12.1)

1. Dose someone can help me, how can I measured the latency on the PCIe HIP.

2. Dose someone have an experience with this design, I heard that there is a gaps in the DMA, it is right? Can I trusted the this ref or I need to write my own application layer

Thanks.