I’ve tested this with (on arch linux, kernel 6.10) nvidia versions: 560.35.03 555.58.02 550.78 compositors: kwin_wayland sway weston (reports that this happens on gnome-shell as well, but I haven’t tested myself) egl-wayland versions: 1.1.9 1.1.13 1.1.2 1.1.16 All with the same behaviour, …

Xwayland VRAM usage is still excessive when resizing X11 apps under wayland. opened 06:51PM - 11 Aug 24 UTC (UTC) [shelterx] shelterx I'm not sure what…

Related discussions across the web (most people notice this on xwayland): [image] Xwayland uses a lot of VRAM after resizing windows (tested firefox and emacs)... I'm using xwayland on 23.2.3 on an Nvidia 4090: Arch Linux [image] Xwayland: GPU memor…

Since you have an AMD GPU too, does it even increase the VRAM usage while resizing?

Yes, resizing a konsole adds about 100MB to kwin_wayland, but it gets freed within seconds (according to nvtop)

Ok, yeah, 100MB isn’t much either, compared to Nvidia allocating over 1GB. Anyway, they aknowledged this, at least the Xwayland “leak”, hopefully we will get a fix in the next driver release. It’s been awfully quiet from Nvidia on the forum recently, hopefully they are busy crunching.

I think it’s an issue with the EGL implementation, using zink or any wlroots based window manager with WLR_RENDERER=vulkan may workaround the issue.

Setting WLR_RENDERER=vulkanin /etc/environment doesn’t reduce VRAM usage a bit, on my workstation. What is the origin of this advice, please?

Mhh… but kwin_wayland uses libGL as well so… I don’t know if it’s specific to EGL. It could be a libGL issue too, since Xwayland doesn’t have EGL linked in at all, and it doesn’t free memory for Xwayland either. But what do I know, all we know it’s in the driver somewhere.

It will only reduce VRAM usage of the window manager and it need to be wlroots based such as sway, Hyprland, …

Xwayland doesn’t have EGL linked EGL isn’t hopefully directly linked to Xwayland because each vendor has it own implementation. EGL and even GLX are loaded with libglvnd.

So something is really strange – as suggested by @shelter , I was playing around with window minimizing in kwin_wayland, and found that if you just use the alt-tab switcher, the VRAM usage of kwin_wayland gets freed after resizing. Maybe it has to do with a call that’s being made to generate the liv…

Multiple wayland compositors not freeing VRAM after resizing windows

Graphics / Linux Linux

kelvie September 27, 2024, 7:50pm 12

The solution is here, I’ve tested it on kwin and it works now!

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Multiple wayland compositors not freeing VRAM after resizing windows

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