Issue with DPDK-Burst Replay – No Frame Transmission Observed Despite Successful Replay

[Stephen Hemminger]

On Fri, 25 Jul 2025 14:39:49 +0400 (+04)
Ivan Malov <ivan.malov at arknetworks.am> wrote:

> Hi Ernesto,
> 
> On Fri, 25 Jul 2025, Ernesto Ruffini wrote:
> 
> > Hi,
> > Did you try using usertools/dpdk-telemetry.py?
> > It attaches to a running DPDK process (so your sending process should stay running and not close immediately), and can show many counters, including packets output by a device.
> > At the command prompt, you can type "/ethdev/stats,0" and it will show all input and output packet counters for each configured queue in device 0.
> >
> > https://doc.dpdk.org/guides/howto/telemetry.html  
> 
> Thanks, that may indeed be helpful. But even without a secondary process, just
> inserting one invocation of statistics API and a printout to the port stop
> sequence of the target application would suffice to show the drops (if any).
> 
> Thank you.

The DPDK dumpcap tool also adds statistics at end of capture into the pcapng format file.