Virtio-PMD speed limits to 100Gbps, while hardware supports 200Gbps
Maxime Coquelin
maxime.coquelin at redhat.com
Tue Apr 29 09:38:32 CEST 2025
Hi,
On 4/28/25 4:14 PM, Ayshathul Thuhara wrote:
> Hi Team,
>
> I am using virtio-net, virtio-pci drivers for a Bittware hardware. I
> could see the data is sent and received with the throughput of 100Gbps.
> But the hardware supports for 200Gbps. I am not able to get the
> throughput more than 200Gbps.
My understanding is you are using a physical device implementing the
Virtio specification. I don't know Bittware, but I think you should
reach out to them for support. We don't have 100G limitation in Virtio
PMD AFAICT.
Regards,
Maxime
> I am using latest DPDK source files and I tested TestPMD application to
> transfer and receive packets. I have noticed the virtio_ethdev.c
> supports 200G, but while testing TX and RX shows 100Gbps.
> I have increase CPU cores to more than 6 for each TX and RX. Still the
> throughput remains in 100Gbps.
>
> Could you please let me know what changes to be made and what debug area
> I should look into.?
>
> Thanks and regards,
> Ayshathul Thuhara
>
More information about the dev
mailing list