Re: Virtio network performance poorer than emulated e1000

Jes Sorensen
2010-07-23T07:11:27Z

On 07/23/10 03:31, Balachandar wrote:
> On Thu, Jul 22, 2010 at 8:18 PM, Sridhar Samudrala
> I tried this one also but not much improvement. Actually i get a some
> improvement if i disabled the tx timeout timer in the virtio_net.h in
> qemu-kvm. I read that with vhost the data flow path differs from
> normal operation. So is the timeout applicable when we use vhost
> also? Actually i dont see any improvement with vhost. I am just
> wondering what am i missing? The thing that worries me is that
> emulated nic offers much greater performance than virtio with vhost.
> So i feel i am doing something wrong but unable to find it.

Could you try measuring something meaningful instead of ping please?
netperf or some other benchmark?

Jes