here is some latency tests using an external camera, though that's Windows only, there might've been a similar one for Linux, but not sure https://chadaustin.m

here is some latency tests using an external camera, though that's Windows only, there might've been a similar one for Linux, but not sure https://chadaustin.me/2024/02/windows-terminal-latency/ https://chadaustin.me/2024/02/windows-terminal-latency/ The other one where xterm is uber low is https://lwn.net/Articles/751763/ https://lwn.net/Articles/751763/ is using this tool with software-based screen capture https://pavelfatin.com/typometer/ https://pavelfatin.com/typometer/, not sure how reliable that is as a proxy for end-to-end (at the time of the benchmark Wayland wasn't supported)