[Qemu-devel] virtio-net performance on mach-virt.

[Giridhar Maruthy]

Hi All,

I tried to measure the network performance of guest (mach-virt) with
virtio-net on an ARM host platform (Samsung exynos). The qemu version
is 1.6.50.

I found that with 1GbE NIC on the host, the host iperf gave a speed of
847Mbits/sec when a local dhcp server was used as a iperf server.

But the guest gave a speed of 478Mbits/sec which is around 56% compared to host.

What is the typical guest network efficiency compared to host with virtio-net?
Any ideas would be helpful.

Thanks,
Giridhar