[olug] Wondering if I can pick your brains on my new KVM install

[Justin Reiners]

No it seems only kvm guests are slow, the host seems to have no problem
with iperf3 showing 931mbps to the old hardware. I see my loaded speed test
latency went up to 3 ms from 1ms before, after I switched hardware and OS.





On Wed, Jan 30, 2019, 7:30 PM Kevin <sharpestmarble at gmail.com wrote:

> Are you able to hit the same speeds in transfers to another internal
> server?
>
> On Wed, Jan 30, 2019 at 4:14 PM Justin Reiners <justin at hotlinesinc.com>
> wrote:
>
> > I just recently rebuilt my home server again, it ran Korora 25, and
> because
> > they decided not to release anything past 26, I decided to move it to
> > Fedora Server.
> >
> > I run SABnzbd, Sonarr, Radarr, many docker-compose and docker scripts,
> > mariadb, grafana. and some custom python code I wrote for my software
> > defined radio to pull my smart meter use. I also have about 11 different
> > VM's on KVM from windows, to Linux in many flavors for my testing.
> >
> > I have a speed test script that I plot with Grafana, checking both CL's
> own
> > speed test, and fast.com, and I notice a huge difference in network
> speeds
> > since I switched to the new server.
> >
> > I've tried switching the network card type from rtl8139, e1000 and
> virtio,
> > and it still seems the VM is limited to 300-400Mbit.
> >
> > Running the same test on my old server, I'm able to hit 900+mbit
> > consistently.
> >
> > Any suggestions?
> >
> > The old and new server are the same identical hardware. R710, 128GB RAM,
> > 12TB, 2.93ish GHz quad-core Xeon. The old server ran everything under
> > docker, or on the host itself.
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