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

[Giridhar Maruthy]

On 30 October 2013 22:12, Paolo Bonzini <address@hidden> wrote:
> Il 30/10/2013 15:40, Giridhar Maruthy ha scritto:
>> 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.
>
> Were you using vhost?

Yes, I did use vhost in the host kernel configuration and passed
vhost=on in qemu, but there is no difference in the performance of
guest.

Thanks,
Giridhar
>
> Paolo