[SOLVED] VM to Unraid-Host network speed


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Hi guys,

I think i do need a little help to further trace my current network issues.

Details
Unraid-OS: Version: 6.8.3 


Network-Settings on Unraid HOST:
Bonding: no
Bridging: yes
Bridging-Members: eth0
IPv4 Only
All IPs / gateways are static
Local DNS Server on Router.
MTU: 1500
Vlans: no

 

Where i'm coming from

In summary, i do host a database as docker on my unraid machine. Storage is on the cache NVME drive.

Now i have a bunch of operations that should take around 20 seconds to execute.

 

Now i wanted to excess this docker-container from within a a Win10-VM running on the same Unraid Host, which took about 15 minutes.
Accessing the same docker-database from an external workstation, it takes the estimated 20 seconds.

 

So from my point of view, it's not:
- the storage / hardware ressources
- the docker container
- the database system

After some searching, i do think it is related to the network. So i tested the connections speeds with iPerf.
Unraid-Host: 192.168.1.10
VM: 192.168.1.200

.\iperf3.exe -c 192.168.1.10
Connecting to host 192.168.1.10, port 5201
[  4] local 192.168.1.200 port 60584 connected to 192.168.1.10 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec   433 MBytes  3.63 Gbits/sec
[  4]   1.00-2.00   sec   422 MBytes  3.54 Gbits/sec
[  4]   2.00-3.00   sec   444 MBytes  3.72 Gbits/sec
[  4]   3.00-4.00   sec   436 MBytes  3.66 Gbits/sec
[  4]   4.00-5.00   sec   426 MBytes  3.57 Gbits/sec
[  4]   5.00-6.00   sec   440 MBytes  3.69 Gbits/sec
[  4]   6.00-7.00   sec   439 MBytes  3.68 Gbits/sec
[  4]   7.00-8.00   sec   445 MBytes  3.74 Gbits/sec
[  4]   8.00-9.00   sec   428 MBytes  3.59 Gbits/sec
[  4]   9.00-10.00  sec   449 MBytes  3.76 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec  4.26 GBytes  3.66 Gbits/sec                  sender
[  4]   0.00-10.00  sec  4.26 GBytes  3.66 Gbits/sec                  receiver
iperf Done.


.\iperf3.exe -c 192.168.1.10 -R
Connecting to host 192.168.1.10, port 5201
Reverse mode, remote host 192.168.1.10 is sending
[  4] local 192.168.1.200 port 60587 connected to 192.168.1.10 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  22.8 KBytes   187 Kbits/sec
[  4]   1.00-2.00   sec  25.7 KBytes   210 Kbits/sec
[  4]   2.00-3.00   sec  20.0 KBytes   164 Kbits/sec
[  4]   3.00-4.00   sec  21.4 KBytes   175 Kbits/sec
[  4]   4.00-5.00   sec  20.0 KBytes   164 Kbits/sec
[  4]   5.00-6.00   sec  20.0 KBytes   164 Kbits/sec
[  4]   6.00-7.00   sec  21.4 KBytes   175 Kbits/sec
[  4]   7.00-8.00   sec  20.0 KBytes   163 Kbits/sec
[  4]   8.00-9.00   sec  20.0 KBytes   164 Kbits/sec
[  4]   9.00-10.00  sec  20.0 KBytes   164 Kbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   328 KBytes   269 Kbits/sec   50             sender
[  4]   0.00-10.00  sec   211 KBytes   173 Kbits/sec                  receiver
iperf Done.

As you can see, the network speeds from VM => Host are totally fine with 3.66Gbit/sec.
But the reverse-Connection Host => VM is utterly garbage.

And i'm kind of stuck now and out of ideas how to trace this further and what could possibly be the issue here.
Any advice is heartly welcome.


PS: Please just let me know if you need more informations. i'll provide whatever i can.
 

Link to comment
20 minutes ago, Trynn said:

can anyone may test the those iperf benchmarks on their maschine?

Sure:


 

C:\iperf>iperf3 -c 192.168.1.10
Connecting to host 192.168.1.10, port 5201
[  4] local 192.168.1.6 port 51796 connected to 192.168.1.10 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec   356 MBytes  2.98 Gbits/sec
[  4]   1.00-2.00   sec   263 MBytes  2.20 Gbits/sec
[  4]   2.00-3.00   sec   474 MBytes  3.98 Gbits/sec
[  4]   3.00-4.00   sec   467 MBytes  3.90 Gbits/sec
[  4]   4.00-5.00   sec   371 MBytes  3.13 Gbits/sec
[  4]   5.00-6.00   sec   464 MBytes  3.89 Gbits/sec
[  4]   6.00-7.00   sec   447 MBytes  3.75 Gbits/sec
[  4]   7.00-8.00   sec   543 MBytes  4.56 Gbits/sec
[  4]   8.00-9.00   sec   619 MBytes  5.19 Gbits/sec
[  4]   9.00-10.00  sec   712 MBytes  5.98 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec  4.61 GBytes  3.96 Gbits/sec                  sender
[  4]   0.00-10.00  sec  4.61 GBytes  3.96 Gbits/sec                  receiver

iperf Done.

C:\iperf>iperf3 -c 192.168.1.10 -R
Connecting to host 192.168.1.10, port 5201
Reverse mode, remote host 192.168.1.10 is sending
[  4] local 192.168.1.6 port 51814 connected to 192.168.1.10 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec   462 MBytes  3.87 Gbits/sec
[  4]   1.00-2.00   sec   369 MBytes  3.10 Gbits/sec
[  4]   2.00-3.01   sec   378 MBytes  3.15 Gbits/sec
[  4]   3.01-4.00   sec   320 MBytes  2.70 Gbits/sec
[  4]   4.00-5.01   sec   349 MBytes  2.90 Gbits/sec
[  4]   5.01-6.01   sec   384 MBytes  3.22 Gbits/sec
[  4]   6.01-7.00   sec   427 MBytes  3.61 Gbits/sec
[  4]   7.00-8.00   sec   417 MBytes  3.50 Gbits/sec
[  4]   8.00-9.00   sec   443 MBytes  3.72 Gbits/sec
[  4]   9.00-10.00  sec   379 MBytes  3.18 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  3.84 GBytes  3.30 Gbits/sec    7             sender
[  4]   0.00-10.00  sec  3.84 GBytes  3.30 Gbits/sec                  receiver

iperf Done.

 

Link to comment
23 minutes ago, Trynn said:

any ideas?

If QEMU/KVM works anything like VMWare the switching should basically go as fast as the system will allow it to process. The odd thing with yours is it's only one direction having an issue. I guess I could suggest you try disabling flow control/nic offloading in "Tipsandtweaks" (an app you must first get from the app place) and see if that does anything for you. Honestly though I don't know if will give you any benefit. Also if you've not go download the latest virtio iso and install the latest drivers.

Edited by Jerky_san
Link to comment
  • 2 weeks later...

switched from virtio-win-0.1.126_stable to virtio-win-0.1.185.iso.

Installed with now included "virtio-win-gt-x64.msi" installer.

Network improved now to
Vm-To-Host: 9.x GBit/s 
Host-To-VM: 7.x GBit/s

so issue solved by driver updates and got a really good improvement too.
Issue solved for me.

  • Like 1
Link to comment
  • JorgeB changed the title to [SOLVED] VM to Unraid-Host network speed

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