To get started with the real-time kernel for Ubuntu 24.04, check out the official documentation. One thing to keep in mind if you’re an NVIDIA GPU user is that the real-time Ubuntu kernel does not support the proprietary NVIDIA graphics drivers.
To get started with the real-time kernel for Ubuntu 24.04, check out the official documentation. One thing to keep in mind if you’re an NVIDIA GPU user is that the real-time Ubuntu kernel does not support the proprietary NVIDIA graphics drivers.
You can just enable all of these features on any 6.8+ kernel. You don’t need Ubuntu Pro.
No, it will no radically improve your gaming performance, but it will definitely increase your energy bill.
Why would it increase your energy bill?
I guess, the governor is set to performance for a realtime kernel to work properly, thus the CPU consumes more power.
Partially, but the shift is more in the amount of power required to constantly serve interrupts. That’s essentially what these flags enable. Where previously the kernel would be more lax about scheduling such things, this let’s all those interrupts off the chain. More interrupts = more power draw. The ARM and AMD extensions mean to reduce that in a meaningful way, though.
In modern processors, using performance can save power. By only powering up one core for a little while, even though it’s at a higher clock speed, some CPUs save energy by going back to sleep as soon as possible.
In my own experiments, powersave often did the opposite, keeping six or seven cores moderately active with light usage (because of the low clock speeds) and using more power than when I used performance.
Real life will vary by CPU and motherboard, of course.