Intel Posts New Linux Patches For Cluster Scheduling With Hybrid CPUs

[phoronix]

Phoronix: Intel Posts New Linux Patches For Cluster Scheduling With Hybrid CPUs

A new set of patches were posted today to enable cluster scheduling for x86 hybrid CPUs. In turn thos latest attempt at cluster scheduling for modern Core CPUs of Alder Lake and newer is yielding some small performance benefits over the current code...

https://www.phoronix.com/news/Intel-Hybrid-CPU-Cluster-Sched

[F.Ultra]

Fyi there is also currently a Pull Request to Ferals Gamemode : https://github.com/FeralInteractive/gamemode/pull/416 that supports core pinning or parking for both Hybrid CPU:s and CPU:s with x3D caches on different chiplets like the 7900x3D and 7950x3D.

[bezirg]

On another note, I cannot understand why these hybrid intel cpus (alderlake and raptorlake) are not allowed to be undervolted inside linux.

Previously, I thought that this limitation was in place because of the plundervolt attack https://plundervolt.com/ which affects some intel cpus with SGX support.

But now that I check the CPUID of my Raptorlake, I see no SGX/SX2 support in the first place, so why this undervolting limitation?