[dpdk-dev] DPDK-pktgen not giving expected throughput

[Wiles, Keith]

> On Jan 10, 2018, at 7:36 AM, Shailja Pandey <csz168117 at iitd.ac.in> wrote:
> 
> Hi,
> 
> We are performing experiments on Dell Poweredge R430 server, which is based on Haswell architecture based xeon-2640 v3 processor. We have attached XL 710 NIC(2x40 GbE) to the machine and expect 59 Mpps packet generation per port. But pktgen is able to generate only 21 Mpps per port and we are not sure about the problem.
> 
> We are using DPDK version 16.07 and DPDK-pktgen version 3.1.0. Is there any way to generate packets from pktgen at 118 Mpps ?

What is the command line for Pktgen?

Using a single CPU you should be able to generate about 21Mpps, which tells me the configuration is not correct.

Pktgen needs N number of TX and RX cores to generate more traffic, plus the packets need to be spread across the cores using RSS. This means pktgen needs to be setup to generate packets with the 5 tuple difference to get all of the cores to receive the packets.

I need to know the command line and the configuration of the machine to help.
> 
> -- 
> 
> Thanks,
> Shailja
> 

Regards,
Keith