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Comment by Salgat | Hacker News Reader

I'm not a fan of how they park the slower CCD, since it means that the scheduler will try to force all processes onto the same CCD (regardless of whether it's for the game), instead of offloading the non-game workloads onto the other CCD. This is an issue if you run background tasks (such as streaming) or have multiple monitors setup for other things like browser etc.

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I think I already have similar troubles with that about Radeon gpu. Their driver (or window11 itself) directs all GPU resource into the foreground app aggressively and basically stop the background app from using it. But I am trying to recording the game using obs. This basically make obs unusable if the gpu is near 100% usage. And sometimes it went even wrong, It decides to direct all gpu resource to the browser on my second screen, and I got 30fps on the game. I usually need a reboot to make it work correctly again.

I'd like them just add a toggle to let me select who use the gpu first or evenly instead. And their guesses never went right.

It is Windows 11 thing. You have to disable GPU scheduling at:

System > Display > Graphics > Default Graphics Settings

RX6900 don't even support GPU scheduling at first place. I don't have option like that there unfortunately.

In addition, different game threads for the same game (or even functions within the game threads!) may benefit differently. Physics calculations may benefit from cache in a different way from other game calculations. Even if you zoom into the different type of physics calculations, there are ballistics, soft-body physics, hair, clothing, foliage, water, etc.

It would be interesting to see what kind of performance could be achieved with PERFECT scheduling. That would probably require the CPU to do process scheduling via specialized circuitry though as opposed to (or in conjunction with) the OS.

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