GameMode improvements for GNOME 3.34 and Fedora 31
Christian Schaller wrote an excellent blog post highlighting a lot of the cool new features and improvements that ship with Fedora 31. I wanted to add to that and give an overview of new things and improvements we did for GameMode that will be in Fedora 31. First of all a quick refresher about GameMode:
GameMode is a solution to optimize performance of a GNU/Linux system for gaming. This is to improve frames-per-seconds as well as make games run smoother, i.e. avoid stuttering. Performance optimization is done by applying various global and per-game tweaks: setting the CPU governor, adjusting the I/O priority, changing the niceness of the game and setting a different kernel scheduler (SCHED_ISO). It recently gained support for setting GPU performance modes (NVIDIA and AMD) and GPU overclocking (NVIDIA). Additionally it will inhibit the screensaver and can execute custom scripts on start and end.
There were two main issues that I focused on: First it was hard to tell if GameMode was currently active and what games/programs were requesting it. The second one was to make GameMode compatible with flatpaks. Both required changes to the GameMode daemon and the API. Upstream was very quick to review and merge all the required patches and roll a release (1.4), thanks a bunch of that.
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