Linux Kernel now faster for AMD

I bought an AMD Ryzen 9 5900HX system in May 2022.
It started out fast, but with subsequent updates became a little slower.
As of kernels 5.19.11/12, the benchmarks I’ve rerun are now faster than initially.
So it seems the fix has at least partly been already applied prior the 6.0.0 kernel.

My Linux distro PCLinuxOS, backported the patches in kernels 5.19.11/12 ahead of 6.0.0 release.

Removing an obsolete AMD fix makes Linux kernel 6 quicker


Can you share some numbers from your system? Thanks!

I really want to buy a new AMD laptop.

in fact, there one AMD 3000+ old desktop retired, but it still working.

My system: Lenovo Legion Slimjet 7; AMD Ryzen 9 5900HX, 8C|16T, 3.9 - 4.5 GHz.
Here is an example of times (secs) for one benchmark, with inputs N.
This is a numerically intense, multi-core, parallel processing application.

    N   | 1x10^11 | 5x10^11 | 1x10^12 | 5x10^12 | 1x10^13 |
 before |  1.12   |  5.85   | 12.14   | 68.04   | 145.01  |
 after  |  0.913  |  4.654  |  9.597  | 55.897  | 127.403 |

However, all multi|parallel core applications will be faster, though you might not notice.
Things e.g. video|audio|photo editing apps, browsers (multi-core rendering, etc), databases, et al.

Here’s a discussion on this topic from PCLinuxOS (my distro) forum.