Opencode Web - Terminal uses 100% CPU

[jmagder]

Description

I noticed on my Linux machine with its 240 fps monitor that chrome was using 100% CPU whenever a terminal was open. The terminal wasn't doing anything, it was just sitting there. This results in the CPU running at a higher power profile than necessary and wasting battery.

Plugins

None

OpenCode version

1.2.6

Steps to reproduce

1. Visit open code in a browser
2. Open a terminal (non mobile)
3. Run btop or whatever tool you like to look at your CPU usage. Notice chromium is using 100%.
4. Close the terminal, CPU usage goes down to a few percentage.

Screenshot and/or share link

Here is a view of the chrome browser profiler when the terminal is open. Notice the 100% cpu usage.

Here is a view of the profiler on my own branch where I added a configuration and set the frame rate to 15 fps

Operating System

Linux

Terminal

n/a

[github-actions]

Thanks for the detailed report! This is a great find with the performance profiler screenshots.

For context, there's a related feature request #13817 that proposes configurable FPS rate limiting, which directly addresses this issue. The ability to limit refresh rate would be useful for scenarios like yours where constant 240 fps rendering is unnecessary and wastes battery/CPU on idle terminals.

[Arsalankhan315]

13899

[jmagder]

PR is open that implements just that! #13901