The State of GNOME 40's Threaded Input
Written by Michael Larabel in GNOME on 23 January 2021 at 07:29 AM EST. 15 Comments
GNOME --
One of many improvements we have been looking forward to with GNOME 40 is Mutter now having a separate input thread with its native back-end for Wayland.

That allows more of the input work to happen in a separate CPU thread. The code was merged back in November and has seen improvements ahead of the GNOME 40 debut in March. This week on the GNOME Shell and Mutter blog was a post looking at the current state of this work.

At the moment in Mutter this threaded input allows for libinput events to be dispatched quicker, input handling not being stalled by the main thread work in Mutter, better cursor plane position updating, and an improved structure to the input code.

Still to be done is addressing the matter of the pointer cursor freezing if the main Mutter thread is stalled, the main thread still being involved with Ctrl + Alt + Fn handling, and other work to nicely handle 1000Hz+ mice and other high frequency input devices.

More details as to the current state of Mutter's threaded input for GNOME 40 can be found at GNOME.org.
Related News
About The Author
Author picture

Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

Popular News This Week