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From: Stephen Hemminger <stephen@networkplumber.org>
To: Trevor Highland <tsh@vectra.ai>
Cc: "users@dpdk.org" <users@dpdk.org>
Subject: Re: [dpdk-users] Ixgbe empty queue stats
Date: Sat, 27 Feb 2021 10:45:56 -0800
Message-ID: <20210227104556.77526c43@hermes.local> (raw)
In-Reply-To: <DM5PR08MB3434A53C75B180B834951DCFA49F9@DM5PR08MB3434.namprd08.prod.outlook.com>

On Wed, 24 Feb 2021 13:24:37 +0000
Trevor Highland <tsh@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?

      reply	other threads:[~2021-02-27 18:46 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-24 13:24 Trevor Highland
2021-02-27 18:45 ` Stephen Hemminger [this message]

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