I have a virtio network at 100gbps ??? crazy

HFernandez

New Member
May 20, 2019
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Hello, I have 1 cluster of 3 nodes, I have four 1GB network cards in bond mode.

add a virtio to a VM (win7) and speed me up to 100gbps.

Attached image.

Is it a bug?
 

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wolfgang

Proxmox Staff Member
Staff member
Oct 1, 2014
6,497
459
103
Hi,

this is only a number from the nic driver, not the real speed.
And the speed declaration makes no difference for the guest.
 

HFernandez

New Member
May 20, 2019
14
0
1
121
This answer does not transmit security.
The sizes of the discs?
the memory?
What is real and what is not?
 

wolfgang

Proxmox Staff Member
Staff member
Oct 1, 2014
6,497
459
103
This has nothing to do with security.
It is a number in a driver what exactly do nothing expect showing the speed of the nic.
 

LnxBil

Famous Member
Feb 21, 2015
5,482
601
133
Germany
Is it a bug?

You have a virtual network card without any physical boundaries, so no, this is not a bug. You can transfer data from one VM to another VM on the same host and bridge very fast and internally this uses memory copy, so that you will have a very, very huge bandwidth, which does not comply with normal ethernet standards (remember, there is no real hardware). These "huge" numbers are more an upper limit than guaranteed throughput.

I have here on one server (with only 1 GBE cards) 6 GBit/s between two virtual machines.
 

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