Ubuntu 23.04 Laptop Performance Mixed Against Ubuntu 22.10

The upgrade to Python 3.11 on Ubuntu 23.04 meant better Python performance for the Intel Tigerlake and AMD Rembrandt laptops while the Intel Alder Lake laptop remained in its regressed state. Python 3.11 brings some very nice performance improvements over v3.10 and prior -- assuming you aren't hit with unrelated problems like this Alder Lake laptop.

For common workloads, the AMD Rembrandt and Intel Tigerlake laptops were exhibiting similar performance on Ubuntu 23.04 relative to 22.10.

When taking the geometric mean of the 67 tests carried out on the three distinct laptops between Ubuntu 22.10 and 23.04, the Intel Tigerlake and AMD Rembrandt laptops exhibited similar performance... With the exception of the graphics/gaming performance. All three laptops showed noticeably lower performance in the graphics/gaming tests across multiple benchmarks, raising the possibility it's some GNOME Mutter regression or similar. For the other CPU and system benchmarks, the Tigerlake and Rembrandt laptops performed similarly while it was the newer Intel Alder Lake laptop facing steep regressions on Ubuntu 23.04.

As for the cause of the Alder Lake regression on Ubuntu 23.04 it remains unclear right now but quite likely some kernel issue. When looking through the Ubuntu bug tracker, there has been this Launchpad bug report open since mid-March and marked as "high" importance for Intel Alder Lake GPU performance being much lower now with 6.1~6.2 kernels than the former 5.19 kernel. That though is just pegged as an Alder Lake graphics regression and not yet resolved. I'll be trying out other modern Linux distributions like Fedora 38 on the MSI laptop to see if the Alder Lake regression repeats there or not and depending upon reader interest/support may dig deeper if it appears to be a kernel regression. At least though the AMD Rembrandt and Intel Tigerlake performance is showing as stable for today's Ubuntu 23.04 release.