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

[Justin Reiners]

After testing with iperf and iperf3 I see the internal hosts all get around
940mbit or so.

So no issues with either KVM or the guests, it looks like it's squarely on
a network device. Sorry to bother with this. It seems my speeds are testing
around 300-300 for my fiber, when just a week ago I was getting much closer
to advertised 1GB.

Annd after rebooting my router things are fine. sorry to bother.

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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