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 direct 972.434.4136 mobile 940.213.5533 fax 000.000.0000 [Powering 30 Years of Innovation]<http://www.windriver.com/announces/wr30/> 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
