i just read now a article about hardcoded scaling on linux, which is a maximum of 8 cores (or maybe even threads?) a few days ago also read that the cpu scheduler get’s an overhaul so i hope they fix this issue, too. Article: https://thehftguy.com/2023/11/14/the-linux-kernel-has-been-accidentally-hardcoded-to-a-maximum-of-8-cores-for-nearly-20-years/
It’s pretty sensible behavior. Things that are desirable on desktop-like multicore systems aren’t always desirable on manycore systems.
The ability to thrash on 128 cores is probably not something anyone is missing.