On Wed, 10 Nov 2021 17:12:12 +0100 Francesco <francesco.monto...@gmail.com> wrote:
> Hi all, > I'm using testpmd as very simple packet generator to test the > capability of receive packets of my DPDK application. I'm using a > Mellanox CX5 100Gbps card for the test. > > I can successfully launch testpmd with options "--forward-mode=txonly > --stats-period=3" to push 10.5MPPS on each of the 2 ports of the NIC > (using just 1 CPU core !!). This is good but I have a couple of > questions which probably are very basic hopefully: > > 1) can I limit the TX rate to e.g. half the value I'm getting now > (e.g. to 5MPPS) ? > > 2) if I want to use more than 1 CPU core for testpmd how can I achieve > that? I played with --nb-cores=5 and running testpmd in interactive > mode and then issuing "port config all txq 4" but still no luck... > testpmd will keep using only 1 CPU core > > 3) when I run testpmd in batch mode I get a nice report about > "throughput (since last show)" every stats period. How can I tell > testpmd to show me PPS/bytes-per-second reporting also when I start > the application with "-i" (interactive mode)? > > Thanks a lot for any hint, > > Francesco Montorsi Use a real packet generator like trex if you need more control.
