From: Stephen Hemminger <stephen@networkplumber.org>
To: Sylvain Vasseur <remmog@gmail.com>
Cc: users@dpdk.org
Subject: Re: poor performances with DPDK on a gcloud VM
Date: Tue, 21 Jun 2022 09:52:11 -0700 [thread overview]
Message-ID: <20220621095211.2de760cd@hermes.local> (raw)
In-Reply-To: <CABVe3HNM1wU=xqD3q-+NNcaCk4akNMgDBwhxcYXNk6LMGPeoFA@mail.gmail.com>
On Tue, 21 Jun 2022 17:29:38 +0100
Sylvain Vasseur <remmog@gmail.com> wrote:
> Hello,
>
> Did someone already manage to use DPDK on a GCP VM and have good
> performances? I am trying this configuration lately, have some awful
> bandwidth results and no idea what I could be doing wrong.
>
> I use the VirtIO interfaces on my VMs, was able to use both the vfio-pci
> and igb_uio PMD. But can only get ~350Mbps (yes bits!) with both, when
> trying to transmit data with a very basic testpmd run.
> dpdk-testpmd -a 0000:00:05.0 -- --forward-mode=txonly --stats-period 1
>
> Any non-dpdk use of the network interface gives me way better results
> (GBps!).
>
> Device:
> 00:05.0 Ethernet controller: Red Hat, Inc. Virtio network device
>
> Bind status
> Network devices using DPDK-compatible driver
> ============================================
> 0000:00:05.0 'Virtio network device 1000' drv=igb_uio unused=vfio-pci
>
> I would bet I am doing something wrong, either with the PMD choice, or with
> some setting. But can't figure what. Did anyone manage to have good
> performances or some experience of using DPDK on a google cloud VM?
>
> Thanks in advance
> Sylvain
Check the negotiation of virtio features and checksum offload bits.
prev parent reply other threads:[~2022-06-21 16:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-21 16:29 Sylvain Vasseur
2022-06-21 16:52 ` Stephen Hemminger [this message]
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