using dpdk-testpmd as traffic generator for dpdk application performance test

[Stephen Hemminger]

On Tue, 6 Sep 2022 10:46:08 +0000
"Yan, Xiaoping (NSB - CN/Hangzhou)" <xiaoping.yan at nokia-sbell.com> wrote:

> Hi,
> 
> I'm trying to use dpdk-testpmd TX-ONLY mode as traffic generator for performance test.
> With command like below, the testpmd is sending traffic in quit high rate.
> Is there some way to configure the generated packet rate?
> I tried to set txtimes (set txtimes 1000,1000), but it seems no effect on packet rate.
> Also do we have some way to show current packet rate in testpmd?
> Thank you.
> 
> I'm using dpdk 21.11, and using Mellanox CX-6 SRIOV VF for testing.
> 
> Testpmd command used:
> dpdk-testpmd -l "32,33" --legacy-mem --socket-mem "1000,4000" -a 0000:b1:04.7 -- -i --nb-cores=1 --portmask=0x1 --rxd=2048 --txd=2048
> testpmd> port stop 0
> testpmd> vlan set filter on 0
> testpmd> rx_vlan add 1111 0
> testpmd> port start 0
> testpmd> set fwd txonly
> testpmd> set txpkts 64
> testpmd> set eth-peer 0 4A:8F:F1:22:C8:F3
> testpmd> start  

There multiple other packet generators using DPDK (trex, pkt-gen, etc).
The purpose of testpmd is to test drivers; if you need something with more control use another program.