Linux

_{e41a1867dec0 · p50 latency, lower is faster. Full Raw Benchmarks}

Scenario	rmux	tmux	zellij	vs tmux
Create background session (default shell)	`3.424 ms`	`15.556 ms`	`-`	`🟢 4.5x faster`
List sessions	`1.234 ms`	`3.349 ms`	`15.772 ms`	`🟢 2.7x faster`
Split pane left/right	`3.345 ms`	`7.508 ms`	`32.393 ms`	`🟢 2.2x faster`
Split pane top/bottom	`3.311 ms`	`7.533 ms`	`32.505 ms`	`🟢 2.3x faster`
Send keys to pane/window	`1.301 ms`	`3.380 ms`	`16.397 ms`	`🟢 2.6x faster`
Capture visible output	`1.329 ms`	`3.356 ms`	`16.265 ms`	`🟢 2.5x faster`
Capture full scrollback	`3.322 ms`	`7.441 ms`	`-`	`🟢 2.2x faster`
List tabs/windows	`3.501 ms`	`3.590 ms`	`15.593 ms`	`≈ same speed`
Grow pane by 1 cell	`1.334 ms`	`3.353 ms`	`-`	`🟢 2.5x faster`
Terminate session	`1.292 ms`	`3.362 ms`	`15.566 ms`	`🟢 2.6x faster`

Windows

_{e41a1867dec0 · p50 latency, lower is faster. Full Raw Benchmarks}

Scenario	rmux	tmux (WSL)	zellij	vs tmux (WSL)
Create background session (default shell)	`24.660 ms`	`82.498 ms`	`-`	`🟢 3.3x faster`
List sessions	`36.795 ms`	`86.960 ms`	`117.267 ms`	`🟢 2.4x faster`
Split pane left/right	`32.928 ms`	`98.884 ms`	`90.698 ms`	`🟢 3.0x faster`
Split pane top/bottom	`31.234 ms`	`100.911 ms`	`93.240 ms`	`🟢 3.2x faster`
Send keys to pane/window	`21.089 ms`	`85.427 ms`	`78.848 ms`	`🟢 4.1x faster`
Capture visible output	`23.426 ms`	`83.049 ms`	`74.897 ms`	`🟢 3.5x faster`
Capture full scrollback	`23.939 ms`	`85.449 ms`	`-`	`🟢 3.6x faster`
List tabs/windows	`20.099 ms`	`83.230 ms`	`75.030 ms`	`🟢 4.1x faster`
Grow pane by 1 cell	`21.817 ms`	`85.571 ms`	`-`	`🟢 3.9x faster`
Terminate session	`21.323 ms`	`88.383 ms`	`86.781 ms`	`🟢 4.1x faster`

macOS

_{e41a1867dec0 · p50 latency, lower is faster. Full Raw Benchmarks}

_{macOS note: measured on a MacBook Pro. Most operations finish around 5 ms on this machine; read those rows as "same speed".}

Scenario	rmux	tmux	zellij	vs tmux
Create background session (default shell)	`9.939 ms`	`19.127 ms`	`-`	`🟢 1.9x faster`
List sessions	`4.858 ms`	`4.825 ms`	`19.389 ms`	`≈ same speed`
Split pane left/right	`4.932 ms`	`4.884 ms`	`19.197 ms`	`≈ same speed`
Split pane top/bottom	`4.861 ms`	`4.830 ms`	`20.018 ms`	`≈ same speed`
Send keys to pane/window	`4.873 ms`	`4.800 ms`	`-`	`≈ same speed`
Capture visible output	`4.883 ms`	`4.899 ms`	`19.788 ms`	`≈ same speed`
Capture full scrollback	`4.748 ms`	`4.960 ms`	`-`	`≈ same speed`
List tabs/windows	`5.716 ms`	`5.175 ms`	`20.098 ms`	`≈ same speed`
Grow pane by 1 cell	`4.867 ms`	`4.885 ms`	`-`	`≈ same speed`
Terminate session	`4.904 ms`	`4.879 ms`	`19.445 ms`	`≈ same speed`

## Reproducing Run the scripts locally on each OS, gather the JSON files, and generate the Markdown: ```bash scripts/bench/run-unix.sh --out target/benchmarks/linux.json scripts/bench/run-windows.ps1 -Out target/benchmarks/windows.json scripts/bench/run-unix.sh --out target/benchmarks/macos.json python3 scripts/bench/render.py target/benchmarks/*.json --output docs/benchmarks.md ``` Note: Scripts run safely in isolated sessions and only kill their own test processes. ## Methodology The `render.py` script updates this Markdown file and linked CSVs based on the JSON results. `-`: Operation is unavailable or not comparable. Zellij: Results only show exact equivalents or close approximations. Generated at `2026-07-01T22:29:34Z` from commit `e41a1867dec0`.