Issue about Imx6dl Gigabit Ethernet performance

[jerryzhai]

I know ENET throughput performance has a 470mbit/s limitation (in doc: Chip Errata for the i.MX 6Solo/6DualLite) is a hardware erratum in imx6dl platform.

But in my test wifh imx6dl, I can get Ethernet throughput performance with a 415+165 = 580Mbit/s, this is far beyond the limitation in the doc(Chip Errata for the i.MX 6Solo/6DualLite).

I wonder why I can get this higher performance as in the doc 470mbit/s should be the MAX performance.

Also in the doc, when throughput beyond 400Mbit/s, there is a rick to cause ENET RX FIFO overrun. While in my test 580Mbit/s is far beyond this 400Mbit/s, so how can I configure HW or SW to avoid this risk.

Thanks.

[igorpadykov]

Hi jerry

seems higher performance is obtained since some frames are skipped

due to RX FIFO overruns. Measurement procedure can be found below

http://boundarydevices.com/i-mx6-ethernet/

Best regards

igor

-----------------------------------------------------------------------------------------------------------------------

Note: If this post answers your question, please click the Correct Answer button. Thank you!

-----------------------------------------------------------------------------------------------------------------------