Display GTT memory usage for AMD iGPUs

[gwuen]

Is there an existing issue for this?

• [x] I have searched the existing issues

Is your feature request related to a problem? Please describe.

Modern AMD iGPUs can make use of shared GTT memory in addition to the pre-reserved VRAM. For the per-process memory stats, this is already taken into account, but in the GPU panel there's only a graph for the dedicated VRAM usage.

Describe the solution you'd like

I would love to see an additional graph displaying the GTT memory usage. Adding it to the existing VRAM indiscriminately is not a good idea, as not all applications treat GTT memory the same as VRAM.

Describe alternatives you've considered

No response

Additional context

Both radeontop and amdgpu_top have implemented this. For reference, this is the graph in the amdgpu_top GUI:

[nokyan]

Hi, thanks for the suggestion. I'll see if I can somehow neatly integrate this into the GPU view, though it's not a high priority right now.