Docs

Performance

NOBLE is meant to stay open all day, on a laptop, on battery. It uses about 22 MB of RAM, an idle terminal tab costs about 0.05% of one core and the Home screen about 0.4%.

No fixed frame rate

NOBLE redraws when an event changes something visible, at most 60 times a second under heavy output. An idle terminal redraws once a minute, Home once a second.

Work follows the screen

What	When
System sensors	Every second on the System screen and on Home (every 2 s on battery), every 5 s elsewhere.
Git status	When a command finishes, when Home opens, or when a repository changes.
AI quota	Only while Home is open.
Update check	Once a day, in the background. Off with `check_updates = false`.
On battery	The Home clock drops its seconds and the blinking colon.

Measure it yourself

The repository has an idle benchmark that runs the real binary and reports CPU milliseconds per minute:

shell

$ cargo test --release --test e2e idle -- --ignored --nocapture

And a throughput test that pushes 50,000 lines of output through a pane:

shell

$ cargo test --release --test render heavy_output -- --ignored --nocapture