ttop

A tmux-aware process tree with top-style CPU/memory views.

Sessions are tabs, each window a process tree, sorted by CPU or memory (busiest first). Navigate, filter, and kill — from any pane.

 Sessions:  dev*  infra  notes

       PID    CPU%       MEM  COMMAND   (sort: CPU ▼)
 ▾ [2] api   4 proc · 14.2% · 354M
      5990     0.0        9M  └─ -fish
      6021    13.7      320M     └─ node server.js
      6044     0.5       21M        ├─ esbuild
      6050     0.0        4M        └─ tsc --watch
 ▾ [1] editor   2 proc · 1.8% · 89M
      4775     0.0        9M  └─ -fish
      4810     1.8       80M     └─ nvim
 j/k move · ^u/^d page · g/G ends · h/l session · Enter fold · / filter · P cpu · M mem · t SIGTERM · x SIGKILL · q quit

Install

brew install --cask caarlos0/tap/ttop    # homebrew
npm install -g @caarlos0/ttop            # npm
npx @caarlos0/ttop                       # run without installing
cargo install --path .                   # from source

ttop reads your running tmux server, so run it from inside (or alongside) tmux.

Keys

Vim-style; arrows, Home/End and PageUp/PageDown work too.

| Key | Action | | --- | --- | | j / k | move (Ctrl-d/Ctrl-u half-page, g/G top/bottom) | | h / l, Tab | switch session | | Enter | fold / unfold window (⇧Enter for all) | | / | filter by command or PID | | P / M | sort by CPU / memory | | t / x | SIGTERM / SIGKILL the selected process | | q | quit |

CPU% is sampled between ~2s refreshes — the first frame reads ~0%, and a busy process can exceed 100% on multiple cores.

⇧Enter needs a terminal with keyboard-enhancement support; inside tmux, also set -g extended-keys on.