Fedora 38 Beta Performance Mostly Flat, Few Regressions

The biggest surprise in my Fedora 38 Beta testing was finding the OpenGL graphics/gaming performance regressed big time for a few of the open-source games tested... But the Core i9 13900K performance was flat even with the same Radeon RX 7900 XTX graphics card being used on both systems.

The steep drop in these few games on Fedora 38 Beta was a surprise given it wasn't happening on the Intel system with the same graphics card. Going from Fedora 37 to Fedora 38 Beta was just an upgrade from Linux 6.1 to 6.2. Both F37 and F38 are defaulting to the ACPI CPUFreq scaling driver with schedutil governor, so no changes there. When seeing this drop just on the AMD system the CPU frequency scaling driver/governor was one of my initial thoughts for this regression. But that doesn't appear to be the case so then AMD Smart Memory Access issues with RadeonSI or other quirky behavior on the AMD system is a question.

At least on the Intel Raptor Lake system the graphics performance was stable moving to Fedora 38 Beta but rather strange behavior on the AMD Ryzen system. If there is enough reader interest level to justify the additional testing, I'll run a few more gaming tests as the Fedora 38 release gets closer on AMD Ryzen hardware.

When moving beyond the graphics tests, the AMD Ryzen performance was stable -- similar to the Core i9 13900K Raptor Lake system -- when moving from Fedora 37 to Fedora 38 Beta.