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Hard numbers in the Wayland vs. X11 input latency discussion
Date: 2025-01-26 Git: https://gitlab.com/mort96/blog/blob/published/content/00000-home/00016-wayland-input-latency.md Yesterday, I read this blog post: Wayland Cursor Lag: Just give me a break already..., where a Linux user discusses their frustration with input latency under Wayland. They detailed their own subjective experience of the problem, but failed to produce hard evidence.
In my opinion, their experiment was limited by their phone camera's 90 FPS, which really doesn't feel like it's enough to get conclusive numbers when we're talking about differences which are probably on the order of single screen refresh cycles. Distro: Fedora Workstation 41 GNOME version: 47 CPU: AMD Ryzen 9 5950X GPU: AMD Radeon RX 7900XT Monitor: Gigabyte M32U (4k IPS @ 144.99, no DPI scaling) Mouse: Logitech G502 Lightspeed Camera: iPhone 15 Pro, slo-mo 240 FPS Pixels don't switch instantly, so there are ambiguous frames where the cursor is barely starting to become visible in its new location.
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