Ubuntu 24.04 Boosts Gaming Performance

[luisalvarado]

Thank you @eeickmeyer @arighi I went ahead and did the preempt=full on the kernel and got this:

I mean, first, congratulations on the voodoo you do (or did) in Ubuntu 24.04. May I ask, based on the images here:

1. Does the preempt affect the power management for the GPU Card (It is a 4090). Why did I get more FPS with less power usage?

2. Why the bigger boost in FPS. I was expecting probably 5% max, not almost 100% more in some scenarios.

The only change I did like an hour ago was the testing of the 6.9 Kernel and the preempt kernel idea.

Here is my hardware, but what I am trying to understand is how did the preempt or other optimizations have an impact like that so I can try to explain them during a video about Ubuntu 24.04.

The sched_ext I did see the improvements there too. Amazing!!

For the preempt, I did try researching here:

https://stackoverflow.com/questions/817059/what-is-preemption-what-is-a-preemtible-kernel-what-is-it-good-for#:~:text=A%20preemptive%20operating%20system%20can,this%20switching%20is%20essentially%20trasnparent.

https://www.kernel.org/doc/html/v6.6/admin-guide/kernel-parameters.html

Fine-Tuning the Ubuntu 24.04 Kernel for low latency, throughput, and power efficiency

Overview One of the most significant changes in the new Ubuntu 24.04 generic kernel is the availability of additional low-latency tunable settings (Bug #2051342 “Enable lowlatency settings in the generic kernel” : Bugs : linux package : Ubuntu). These options enable dynamic adjustment of the generic Ubuntu kernel to suit different performance profiles, using specific boot-time or run-time parameters, eliminating the need for kernel recompilation. NOTE: as mentioned in a previous post (Enable l…

And I do get most of it. I would guess (please correct me) is that the kernel would guess beforehand some optimizations and ways of using the scheduler for specific scenarios.