Hi,
I recently migrated a Windows Server 2016 from VMWare to Proxmox VE 8.2.7 using the import tool. I’ve installed the VirtIO drivers, and everything seems to be working fine, except for one issue: the VM is only running at 1 Gbps, despite being connected to a 10 Gbps network card. I'm using a VirtIO network card with a VLAN tag configured.
To troubleshoot, I created a Debian container on the same node and another node connected to the same switch, both at 10 Gbps. I installed iperf on both the container and the Windows Server VM to test the connection. However, the results showed no improvement. I also tried using an older version of the VirtIO driver, but that didn’t solve the problem. Additionally, I cleared the Windows Server's cache using ipconfig /flushdns and reset the winsock stack with netsh winsock reset, but the issue persisted.
One strange thing I encountered was when I switched to the VMWare vmxnet3 card and then back to VirtIO. After resetting the VirtIO card, I received the following error, and the VM's network card stopped functioning:
Parameter verification failed. (400)
net0: hotplug problem - VM 100 qmp command 'netdev_add' failed - vhost-net requested but could not be initialized
After rebooting the VM, the VirtIO card started working again.
This are the results of the test between the 2 CT
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 1.10 GBytes 9.41 Gbits/sec 78 1.10 MBytes
[ 5] 1.00-2.00 sec 1.09 GBytes 9.38 Gbits/sec 41 1.42 MBytes
[ 5] 2.00-3.00 sec 1.09 GBytes 9.40 Gbits/sec 54 1.44 MBytes
[ 5] 3.00-4.00 sec 1.09 GBytes 9.39 Gbits/sec 0 1.45 MBytes
[ 5] 4.00-5.00 sec 1.09 GBytes 9.39 Gbits/sec 42 1.48 MBytes
[ 5] 5.00-6.00 sec 1.09 GBytes 9.38 Gbits/sec 32 1.50 MBytes
[ 5] 6.00-7.00 sec 1.09 GBytes 9.40 Gbits/sec 0 1.51 MBytes
[ 5] 7.00-8.00 sec 1.09 GBytes 9.38 Gbits/sec 164 1.51 MBytes
[ 5] 8.00-9.00 sec 1.09 GBytes 9.40 Gbits/sec 0 1.51 MBytes
[ 5] 9.00-10.00 sec 1.09 GBytes 9.38 Gbits/sec 8 1.52 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 10.9 GBytes 9.39 Gbits/sec 419 sender
[ 5] 0.00-10.00 sec 10.9 GBytes 9.39 Gbits/sec receiver
This are the result of the test betwenn the VM and the CT on the same node
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.02 sec 105 MBytes 864 Mbits/sec
[ 5] 1.02-2.00 sec 93.6 MBytes 804 Mbits/sec
[ 5] 2.00-3.02 sec 99.5 MBytes 822 Mbits/sec
[ 5] 3.02-4.00 sec 94.4 MBytes 804 Mbits/sec
[ 5] 4.00-5.02 sec 98.1 MBytes 811 Mbits/sec
[ 5] 5.02-6.02 sec 96.0 MBytes 805 Mbits/sec
[ 5] 6.02-7.02 sec 96.1 MBytes 806 Mbits/sec
[ 5] 7.02-8.02 sec 96.0 MBytes 805 Mbits/sec
[ 5] 8.02-9.02 sec 92.6 MBytes 777 Mbits/sec
[ 5] 9.02-10.02 sec 95.9 MBytes 804 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.02 sec 968 MBytes 810 Mbits/sec sender
[ 5] 0.00-10.07 sec 967 MBytes 806 Mbits/sec receiver
And this the output of the ethtool
Settings for ens5f0:
Supported ports: [ FIBRE ]
Supported link modes: 10000baseT/Full
Supported pause frame use: Symmetric
Supports auto-negotiation: No
Supported FEC modes: Not reported
Advertised link modes: 10000baseT/Full
Advertised pause frame use: Symmetric
Advertised auto-negotiation: No
Advertised FEC modes: Not reported
Speed: 10000Mb/s
Duplex: Full
Auto-negotiation: off
Port: FIBRE
PHYAD: 0
Transceiver: internal
Supports Wake-on: d
Wake-on: d
Current message level: 0x00000007 (7)
drv probe link
Thanks in advance for any help!
I recently migrated a Windows Server 2016 from VMWare to Proxmox VE 8.2.7 using the import tool. I’ve installed the VirtIO drivers, and everything seems to be working fine, except for one issue: the VM is only running at 1 Gbps, despite being connected to a 10 Gbps network card. I'm using a VirtIO network card with a VLAN tag configured.
To troubleshoot, I created a Debian container on the same node and another node connected to the same switch, both at 10 Gbps. I installed iperf on both the container and the Windows Server VM to test the connection. However, the results showed no improvement. I also tried using an older version of the VirtIO driver, but that didn’t solve the problem. Additionally, I cleared the Windows Server's cache using ipconfig /flushdns and reset the winsock stack with netsh winsock reset, but the issue persisted.
One strange thing I encountered was when I switched to the VMWare vmxnet3 card and then back to VirtIO. After resetting the VirtIO card, I received the following error, and the VM's network card stopped functioning:
Parameter verification failed. (400)
net0: hotplug problem - VM 100 qmp command 'netdev_add' failed - vhost-net requested but could not be initialized
After rebooting the VM, the VirtIO card started working again.
This are the results of the test between the 2 CT
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 1.10 GBytes 9.41 Gbits/sec 78 1.10 MBytes
[ 5] 1.00-2.00 sec 1.09 GBytes 9.38 Gbits/sec 41 1.42 MBytes
[ 5] 2.00-3.00 sec 1.09 GBytes 9.40 Gbits/sec 54 1.44 MBytes
[ 5] 3.00-4.00 sec 1.09 GBytes 9.39 Gbits/sec 0 1.45 MBytes
[ 5] 4.00-5.00 sec 1.09 GBytes 9.39 Gbits/sec 42 1.48 MBytes
[ 5] 5.00-6.00 sec 1.09 GBytes 9.38 Gbits/sec 32 1.50 MBytes
[ 5] 6.00-7.00 sec 1.09 GBytes 9.40 Gbits/sec 0 1.51 MBytes
[ 5] 7.00-8.00 sec 1.09 GBytes 9.38 Gbits/sec 164 1.51 MBytes
[ 5] 8.00-9.00 sec 1.09 GBytes 9.40 Gbits/sec 0 1.51 MBytes
[ 5] 9.00-10.00 sec 1.09 GBytes 9.38 Gbits/sec 8 1.52 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 10.9 GBytes 9.39 Gbits/sec 419 sender
[ 5] 0.00-10.00 sec 10.9 GBytes 9.39 Gbits/sec receiver
This are the result of the test betwenn the VM and the CT on the same node
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.02 sec 105 MBytes 864 Mbits/sec
[ 5] 1.02-2.00 sec 93.6 MBytes 804 Mbits/sec
[ 5] 2.00-3.02 sec 99.5 MBytes 822 Mbits/sec
[ 5] 3.02-4.00 sec 94.4 MBytes 804 Mbits/sec
[ 5] 4.00-5.02 sec 98.1 MBytes 811 Mbits/sec
[ 5] 5.02-6.02 sec 96.0 MBytes 805 Mbits/sec
[ 5] 6.02-7.02 sec 96.1 MBytes 806 Mbits/sec
[ 5] 7.02-8.02 sec 96.0 MBytes 805 Mbits/sec
[ 5] 8.02-9.02 sec 92.6 MBytes 777 Mbits/sec
[ 5] 9.02-10.02 sec 95.9 MBytes 804 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.02 sec 968 MBytes 810 Mbits/sec sender
[ 5] 0.00-10.07 sec 967 MBytes 806 Mbits/sec receiver
And this the output of the ethtool
Settings for ens5f0:
Supported ports: [ FIBRE ]
Supported link modes: 10000baseT/Full
Supported pause frame use: Symmetric
Supports auto-negotiation: No
Supported FEC modes: Not reported
Advertised link modes: 10000baseT/Full
Advertised pause frame use: Symmetric
Advertised auto-negotiation: No
Advertised FEC modes: Not reported
Speed: 10000Mb/s
Duplex: Full
Auto-negotiation: off
Port: FIBRE
PHYAD: 0
Transceiver: internal
Supports Wake-on: d
Wake-on: d
Current message level: 0x00000007 (7)
drv probe link
Thanks in advance for any help!
