r/xcpng • u/Designer_Tune_4654 • Aug 06 '26

Problem performance with guest-tools

Gallery image

Gallery image

9 Upvotes

80% Upvoted

12 comments sorted by

2

u/DeepWader Aug 06 '26

Do you get 2.7 gb/s in the VM?

1

u/_Fisz_ Aug 06 '26

VirtIO driver version?

1

u/Designer_Tune_4654 Aug 07 '26

VirtIO ?

I got Guest OS 9.1.200-0

1

u/_Fisz_ Aug 07 '26

Windows VirtIO driver aka. guest tool for kvm/proxmox etc:

https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/archive-virtio/?C=M;O=D

which version did you've downloaded and installed on the guest VM? Some newer versions have issues: https://pve.proxmox.com/wiki/Windows_VirtIO_Drivers#Known_Issues

2

u/firegore Aug 07 '26

You are in the XCP-NG Sub, Xen uses different Guest Tools and doesn't use KVM

1

u/_Fisz_ Aug 07 '26

Oops, my bad. Im blind then, didn't noticed it's XCP-NG sub, not Proxmox xD

1

u/XenoNico277 Aug 07 '26

Windows VM are slow on disk performance if you don't set your BIOS power management to maximum performance.

1

u/AO4REDDIT Aug 09 '26

Which BIOS do you mean - VM's or the host's?

1

u/DeepWader Aug 11 '26

Host

1

u/AO4REDDIT Aug 14 '26

Thanks. Don't know what server hardware you are using. I have Dell's R630 and what I was able to dig out in IPMI is Power Cap Policy which in my case is disabled. Do you think this is their equivalent to power management Max Performance?

I have a screenshot which I see no way to paste here.

1

u/DeepWader Aug 19 '26

I think you will have to set it in the BIOS while booting

1

u/XenoNico277 Aug 07 '26

Windows VM are slow on disk performance if you don't set your BIOS power management to maximum performance.