Hello,

Can you run iperf3 simultaneously on multiple clients?
The idea is simple, check that indeed you are getting more than 5-10GbE aggregated bandwidth in/from the machine.

As for comparing the performance to rdp - I'm not sure you are comparing apples to apples. As far as I remember, by default rdp clients drop the quality of the display when faced with limited bandwidth. No sure virt-viewer can do the same (I'll let the kind people @RedHat confirm deny the above).
Either, I'd suggest you start by verifying that you are indeed getting 10GbE from the clients to the display network.

- Gilboa



On Thu, Jan 7, 2021 at 4:14 PM <ozmen62@hotmail.com> wrote:
Thanks for advice.
Here is the iperf3 test results

Connecting to host xyz.example.com, port 6000
[  4] local XXX.XXX.XXX.XXX port 36140 connected to XYZ.XYZ.XYZ.XYZ port 6000
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec  81.9 MBytes   687 Mbits/sec    0    352 KBytes       
[  4]   1.00-2.00   sec  80.5 MBytes   676 Mbits/sec    0    352 KBytes       
[  4]   2.00-3.00   sec  80.5 MBytes   676 Mbits/sec    0    362 KBytes       
[  4]   3.00-4.00   sec  79.8 MBytes   669 Mbits/sec    0    362 KBytes       
[  4]   4.00-5.00   sec  80.6 MBytes   676 Mbits/sec    0    362 KBytes       
[  4]   5.00-6.00   sec  82.0 MBytes   688 Mbits/sec    0    362 KBytes       
[  4]   6.00-7.00   sec  81.3 MBytes   682 Mbits/sec    0    362 KBytes       
[  4]   7.00-8.00   sec  80.5 MBytes   676 Mbits/sec    0    362 KBytes       
[  4]   8.00-9.00   sec  80.5 MBytes   676 Mbits/sec    0    362 KBytes       
[  4]   9.00-10.00  sec  79.8 MBytes   669 Mbits/sec    0    362 KBytes

Actually, what i was trying to ask is is there any reletion between "default route" and "display" network on oVirt network.
Because, if there is, it might be the source of the problem.
As i wrote above, my "ovirtmanagement" and "default route"  network on the 1Gb port
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