Proxmox 4.3-1/e7cdc165 - Eratic concurrent guest network speed (Windows)

[Tyran]

Hi there,

I've recently installed Windows Server 2012 R2 on one of our Proxmox servers, and it's suffering from eratic concurrent network speeds. The host machine can consistently download at a solid 51MB/s, whilst the guest jumps to 9MB/s and then zero for a period of time again.

I've checked the source of the download location and it's fine, and it's the same sample I use on both host and guest.

This is on vmbr0 with an OVH virtual MAC address. I've tried another Virtual Max, and another network adapter and the same issue persists.

I have also tried the RedHat VirtIO driver - no improvement.

Any ideas?

 

[wolfgang]

Hi,

I'm not sure but i can remember there was a problem like yours and the problem solved by ovh.
There was something wrong with the routing on OVH side.
Do you contact the support?

 

[Tyran]

I've just had a chat with OVH support who have checked over the network configuration on their end and it's running fine - the additional IPs also have full throughput when on the host machine.

https://gyazo.com/38bb372c7aa24905c6304ffbe4979186
https://gyazo.com/751a5a6e4d41a6da8a00e1d8c9437eef

 

[wolfgang]

Did you try the e1000 interface?

What virtio triber version do you use in the windows VM?

Please send the output of

pveversion -v