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

[Rob Townley]

I do not know if the your previous virtualization platform used Single Root
Input Output Virtualization, aka SR-IOV, but the following intel article is
interesting nonetheless because it specifically mentions guest to off host
nic speed:
Configure SR-IOV Network Virtual Functions in Linux* KVM*
https://software.intel.com/en-us/articles/configure-sr-iov-network-virtual-functions-in-linux-kvm


Now that i see it was a fiber problem, we need details on your “Software
Defined Radio for smartmeter usage.”  Are the utility companies in IA or NE?
Were you able to use one of those cheap mice as a receiver?
Do you happen to have  your python scripts up on github or bitbucket or sf?


On Wed, Jan 30, 2019 at 7:47 PM Justin Reiners <justin at hotlinesinc.com>
wrote:

> 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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