[dpdk-users] Ixgbe empty queue stats

[Stephen Hemminger]

On Wed, 24 Feb 2021 13:24:37 +0000
Trevor Highland <tsh at vectra.ai> wrote:

> Hi all,
> 
> We have a DPDK application that’s running using 82599 NICs with the ixgbe driver. Our application makes use of RSS and runs with 8 or 16 queues depending on the environment. I was reviewing xstats from a DPDK application that we run, and found that ‘rx_qN_packets’ was 0 for all queues except queue 0.
> 
> I was able to reproduce this using dpdk-testpmd from the 20.11 release. Additionally I used the ethregs tool and confirmed that the registers are indeed 0. Is this expected behavior, and is there a proper way to get per queue packet counts from hardware registers?
> 
> ./dpdk-testpmd -l 0-8 -n 4 -m5120,5120 -- -i  --forward-mode=rxonly --rxq=2 --txq=2 --portmask=0xc --rxd=65536 --nb-cores=8 --rss-ip
> 

Are you sending packets with different IP addresses?