Kernel Optimization

mattsteg · October 12, 2025, 2:41pm

I believe since February the linux-cachyos kernel has had these optimizations. The package you list says that it uses them as well.

Also not that it matters but why are you using AUR instead of cachy repos?

There was a bug in August that might still be relevant.

github.com/CachyOS/linux-cachyos

Contradictory information - repo readme vs Wiki

opened 09:55AM - 10 Aug 25 UTC

closed 04:26PM - 22 Aug 25 UTC

spinktvis

There's contradictory information on the Wiki vs repo, this not only applies to …the kernel info part and the readme located here, but for example the Wiki gaming section (the Wine part) as well, for which there are a couple of tickets already located and found here https://github.com/CachyOS/CachyOS-PKGBUILDS/issues/779 https://github.com/CachyOS/CachyOS-PKGBUILDS/issues/800 Anyway, back to this, a small example, the Wiki https://wiki.cachyos.org/features/kernel/#why-is-autofdo-not-being-used-for-all-the-other-kernel-variants says only the default linux-cachyos kernel is compiled with FDO vs the info found here in the readme https://github.com/CachyOS/linux-cachyos#compiler-variants which indicates that only linux-cachyos-lto - Clang and Thin LTO, utilizing AutoFDO + Propeller profiling for optimal performance is the only one that has FDO. So what is the truth? Which kernel is actually compiled with FDO? I must admit that such contradictory information is confusing for new users, especially if one follows Phoronix and reads that FDO + Propellor has been disabled entirely a while back due to the then ongoing issues (not sure how relevant that part still is). Hopefully the communication between the maintainers and editors of the wiki can be further improved upon to avoid such things, since other than that CachyOS does a lot right the first time!

That looks like it was resolved end of August