On 2025-11-10 14:54, Thomas Lamprecht wrote:
Am 10.11.25 um 12:40 schrieb Markus Frank:
To get an overview of the performance, see the benchmark below.
supertuxkart (1.5) benchmark (default settings, vulkan, 1024x768):
Host result (Granite Ridge integrated GPU):
* Total frame count: 8488
* Total profiling time (ms): 38139
* Steady FPS: 92
* Mostly stable FPS: 137
* Typical FPS: 194
VM (host, 4 core, 8GiB) with venus (hostmem=8192M) result:
* Total frame count: 3321
* Total profiling time (ms): 38130
* Steady FPS: 58
* Mostly stable FPS: 75
* Typical FPS: 86
Comparing with a benchmark in the VM with other displays would be also nice.
Most interesting would be the default (vga IIRC) and qxl (SPICE).
I did, but I do not think the results are really comparable because all current
display types use vulkan software rendering, which performs really badly.
See below:
VM virtio-gl (Vulkan, without venus, llvmpipe software rendering):
* Total frame count: 762
* Total profiling time (ms): 260786
* Steady FPS: 1
* Mostly stable FPS: 2
* Typical FPS: 2
To make a more meaningful comparison, it would be better to use OpenGL with
virtio-gl.
This is the result I got in the same VM with virtio-gl and a similar
supertuxkart benchmark using OpenGL instead of Vulkan:
VM virtio-gl (OpenGL, virgl):
* Total frame count: 2940
* Total profiling time (ms): 38128
* Steady FPS: 35
* Mostly stable FPS: 54
* Typical FPS: 77
OpenGL also requires software rendering with VGA and QXL.
vga (OpenGL, software rendering):
* Total frame count: 762
* Total profiling time (ms): 73867
* Steady FPS: 7
* Mostly stable FPS: 8
* Typical FPS: 10
qxl (OpenGL, software rendering):
* Total frame count: 762
* Total profiling time (ms): 75797
* Steady FPS: 7
* Mostly stable FPS: 8
* Typical FPS: 9
This benchmark showed no significant differences in performance between
the various memory window sizes for venus.
I probably would not expose them then for now.
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