comfyui-resource-monitor

comfyui-resource-monitor adds a simple live resource monitor to ComfyUI and a Resource Snapshot node for workflows. Created with comfyui-custom-node-template.

<img src="assets/top.png" alt="Resource Monitor Preview">

It is designed to feel native to ComfyUI:

• Top mode mounts into the workflow action bar
• Bottom mode mounts into the canvas toolbar
• Collapsed mode becomes a Resources button in the top bar
• styling follows ComfyUI's existing colors and UI chrome

The monitor can show:

• CPU usage
• RAM usage
• GPU usage
• VRAM usage
• GPU temperature

Install

ComfyUI Manager

1. Open Custom Nodes Manager
2. Search and install comfyui-resource-monitor
3. Restart ComfyUI

Use

After install, open ComfyUI settings and search for Resource Monitor.

Available settings:

• Display Mode: Top, Bottom, or Collapsed
• Expanded By Default
• Refresh Rate
• Smooth Transitions
• Text Density: Compact or Detailed
• Show Clear Buttons: show or hide the Unload Models and Free Memory toolbar buttons
• metric toggles for CPU, RAM, GPU, VRAM, and GPU temperature

Changes apply immediately in the UI.

Clear Controls

Two toolbar buttons appear adjacent to the resource monitor:

• Unload Models — unloads currently loaded models from VRAM
• Free Memory — frees all memory, models, and VRAM

Resource Snapshot Node

The node appears under PBandDev/Resource Monitor as Resource Snapshot.

It captures the machine's current resource state at the point where the node runs and outputs:

• passthrough
• cpu_percent
• ram_percent
• ram_used_bytes
• ram_total_bytes
• gpu_percent
• vram_percent
• vram_used_bytes
• vram_total_bytes
• gpu_temp_celsius
• gpu_available
• gpu_name

The optional passthrough input is forwarded to the passthrough output so the node can sit in the middle of a workflow chain.

If GPU telemetry is unavailable, GPU-related numeric outputs fall back to 0 and gpu_available is false.

<img src="assets/node.png" alt="Resource Monitor Node Preview">

Troubleshooting

• If the monitor does not appear, restart ComfyUI and reload the browser tab.
• If the node appears but GPU values are 0, your system may not expose NVML telemetry.
• If you changed frontend files locally during development, reload the browser tab.
• If you changed Python files locally during development, restart ComfyUI.

Development

Install dependencies:

pnpm install
uv sync --locked --group dev

Checks:

uv run pytest tests/python -q
pnpm test
pnpm typecheck
pnpm build