Windows 10 VM enable AES-NI

[Vinsens]

Hello everybody,

 

this is my first post on the forum. I hope this post is in the right section.

 

I've been running UnRAID for a few months now, and it has been running flawlessly.

However, I noticed that the download speed in a Windows 10 VM reaches only around the half of the speed when downloading on VPN.

If I turn the VPN connection off, the download speed is back to 100%.

Since the VPN uses AES-128 encryption, I think the problem may be related to AES-NI instructions not being enabled for the VM.

I also tested it on a Windows 10 VM on a Proxmox host, and downloads are at full speed on VPN.

 

Is there a way to enable AES-NI for a Windows 10 VM? How does it work on UnRAID?

 

Thank you for your help.

[ghost82]

Usually, windows 10 vms are configured with cpu hostpassthrough, so if the real cpu supports aes, the aes flag will be passed to the guest too...can you check with cpu-z if aes is listed in the cpu flags?and what is the real cpu?

Edited July 30, 2023 by ghost82

[Vinsens]

Thanks for the reply.
It seems AES is also passed to the VM. Download speed is good now.. it was just a bad vpn server.
It's weird how cpu-z shows processor name "Intel Xeon E5-2620 v4" and specification "Intel Xeon E5-2683 v4".
The actual CPU is an Intel Xeon E5-2683 v4.
Also windows task manager shows cpu clock 2,10GHz while cpu-z shows 2,6GHz..
Maybe there is a fix for this?


Anyway it's working good now, thank you!

[ghost82]

Don't bother to it, cpu-z fault.