[dpdk-dev] ways to generate 40Gbps with two NICs x two ports?

[Wiles, Roger Keith]

How do you have Pktgen configured in this case?

On my westmere dual socket 3.4Ghz machine I can send 20G on a single NIC 82599x two ports. My machine has a PCIe bug that does not allow me to send on more then 3 ports at wire rate. I get close to 40G 64 byte packets, but the forth port does is about 70% of wire rate because of the PCIe hardware bottle neck problem.

Keith Wiles, Principal Technologist for Networking member of the CTO office, Wind River
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On Nov 19, 2013, at 10:09 AM, jinho hwang <hwang.jinho at gmail.com<mailto:hwang.jinho at gmail.com>> wrote:

Hi All,

I have two NICs (82599) x two ports that are used as packet generators. I
want to generate full line-rate packets (40Gbps), but Pktgen-DPDK does not
seem to be able to do it when two port in a NIC are used simultaneously.
Does anyone know how to generate 40Gbps without replicating packets in the
switch?

Thank you,

Jinho