Re: Virtio network performance poorer than emulated e1000

Michael Tokarev
2010-07-26T13:51:40Z

26.07.2010 11:26, Jes Sorensen wrote:
> On 07/24/10 17:04, Balachandar wrote:
>> On Fri, Jul 23, 2010 at 3:11 AM, Jes Sorensen<Jes.Sorensen@redhat.com> wrote:
>> Actually i got better results when i downloaded qemu-kvm 0.12.4 from
>> sourceforge and ran it. Now virtio performs better than emaulated
>> e1000 with our own simple ping-pong latency tests. Previously i used
>> Debian squeeze kvm package and i got poor results for virtio. I used
>> vhost-net as described by the kvm
>> website.http://www.linux-kvm.org/page/VhostNet. This also seem to have
>> the same problems i faced with Debian kvm package. How are you guyz
>> using vhost? Is there any other way to use vhost?
>
> Ok thats good to hear. Sounds like the Debian package might be dodgy, or
> they just happened to snapshot at a bad time.

I wonder which version it is - the "debian package". Are we talking
about kvm-72 from debian lenny perhaps?

Current version is 0.12.4-1, which is upstream 0.12.4-1 with a few
bugfixes (such as >1Tb block device corruption). I'm not sure how
that one might be "dogdy" or snapshotted at a bad time.

Thanks!

/mjt