Some thoughts off the top of my head:

- Are you sure it's specific to Wayland? It sounds like you switched distributions too? Can you test with X11 temporarily?
- Might glmark2 be using nouveau or possibly software rendering?
- Any difference between OpenGL and Vulkan?
- What sort of behavior do you get in "normal", non-benchmark applications, like games?

...not sure how helpful this is, but at least you get a thread bump!

[quote=whizse]Some thoughts off the top of my head:

- Are you sure it's specific to Wayland? It sounds like you switched distributions too? Can you test with X11 temporarily?

I did test x11 to but the gpu performance only went up by about 200 points, so it's kinda nothing.
- Might glmark2 be using nouveau or possibly software rendering?
- Any difference between OpenGL and Vulkan?
- What sort of behavior do you get in "normal", non-benchmark applications, like games?
Well I'm having the issue in every thing i tried it on and the gpu always performs worse than the cpu.

Still thanks

NVIDIA's Linux drivers for Pascal and prior have in a slightly rocky spot for a while as-is, the lack of decent Wayland performance isn't a shocker.

There shouldn't be any performance issues on nvidia using Wayland with recent 500 series drivers and independent of GPU architecture. As we're not talking about VKD3D here as it seems.

I think the issues lies somewhere else.

Looking up your configs nothing seems to stand out except your offloading script:

export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0

Not sure where you got that from but for offloading to work it is not required. Try not using this environment variable and test again.

For offloading to work this is all you need:

__NV_PRIME_RENDER_OFFLOAD=1 __VK_LAYER_NV_optimus=NVIDIA_only __GLX_VENDOR_LIBRARY_NAME=nvidia

Note 1: the __VK_LAYER_NV_optimus is only required for Vulkan based applications.
Note 2: You can not mix Zink with Offloading as Zink requires __GLX_VENDOR_LIBRARY_NAME set to mesa which will un-offload your application. Do you happen to have Zink enabled somewhere like:

__GLX_VENDOR_LIBRARY_NAME=mesa MESA_LOADER_DRIVER_OVERRIDE=zink GALLIUM_DRIVER=zink

- Which desktop environment / window manager do you run?
- Do you use something else as an init systems then systemD?

I think, as you run nix the other configs might be of interest here too.

If you run nvidia-smi while benchmarking which performance level is reported by the driver?

+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 550.107.02             Driver Version: 550.107.02     CUDA Version: 12.4     |
|-----------------------------------------+------------------------+----------------------+
| GPU  Name                 Persistence-M | Bus-Id          Disp.A | Volatile Uncorr. ECC |
| Fan  Temp   Perf          Pwr:Usage/Cap |           Memory-Usage | GPU-Util  Compute M. |
|                                         |                        |               MIG M. |
|=========================================+========================+======================|
|   0  NVIDIA GeForce RTX 3080        Off |   00000000:01:00.0  On |                  N/A |
|  0%   57C    P8             41W /  320W |    1021MiB /  10240MiB |      2%      Default |
|                                         |                        |                  N/A |
+-----------------------------------------+------------------------+----------------------+

See P* beside the GPU temperature.

Last but not least as I am not a NixOS expert. Does nix use glibc or musl?

Last edited by Vortex_Acherontic on 23 September 2024 at 10:20 pm UTC