[libvirt-users] connecting host and guest vm using a dummy nic

[daggs]

Greetings Laine,

> Sent: Thursday, May 03, 2018 at 9:39 AM
> From: daggs <daggs at gmx.com>
> To: "Laine Stump" <laine at redhat.com>
> Cc: libvirt-users at redhat.com
> Subject: Re: [libvirt-users] connecting host and guest vm using a dummy nic
>
> Greetings Laine,
> 
> > Sent: Thursday, May 03, 2018 at 1:13 AM
> > From: "Laine Stump" <laine at redhat.com>
> > To: libvirt-users at redhat.com
> > Cc: daggs <daggs at gmx.com>
> > Subject: Re: [libvirt-users] connecting host and guest vm using a dummy nic
> >
> > On 05/02/2018 01:28 PM, daggs wrote:
> > 
> > >> Sent: Wednesday, May 02, 2018 at 8:09 PM
> > >> From: "Laine Stump" <laine at redhat.com>
> > 
> > >>
> > >> Also, if virtio works, then *definitely* use that instead of e1000 - the
> > >> performance will be much better and overhead much lower.
> > >>
> > >>
> > > so any network test will do?
> > > 
> > 
> > 
> > Do you mean to test and see if virtio-net is acceptable for your guest
> > OS? If the guest OS has the driver for virtio-net, then definitely you
> > should use it. I've never heard of a case of any of the drivers that
> > emulate real hardware performing anywhere near as well as virtio-net.
> > 
> 
> no, I mean test the virtual nic speed, will ipref work?
> also, in the guest os, the module attached to the virtual nic is virtio-pci, is that expected?
> 
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root at router:/# iperf -s
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
[  4] local 10.1.0.138 port 5001 connected with 10.1.0.212 port 57590
[ ID] Interval       Transfer     Bandwidth
[  4]  0.0-10.0 sec  33.1 GBytes  28.4 Gbits/sec

looks very good indeed. thanks for all the help.