Flameshow

Flameshow is a terminal Flamegraph viewer.

Features

• Renders Flamegraphs in your terminal
• Supports zooming in and displaying percentages
• Keyboard input is prioritized
• All operations can also be performed using the mouse.
• Can switch to different sample types

Install

Flameshow is written in pure Python, so you can install via pip:

pip install flameshow

Usage

View golang's goroutine dump:

$ curl http://localhost:9100/debug/pprof/goroutine -o goroutine.out
$ flameshow goroutine.out

After entering the TUI, the available actions are listed on Footer:

• q for quit
• j i j k or ← ↓ ↑ → for moving around, and Enter for zoom in, then Esc for zoom out.
• You can also use a mouse, hover on a span will show it details, and click will zoom it.

Supported Formats

At the moment, Flameshow supports only Golang's pprof dump. I'm actively working on adding more formats. Admittedly, I might not be familiar with every tool and its specifics. So, if you'd like Flameshow to integrate with a tool you love, feel free reach out and drop an issue.

• Golang pprof

Development

If you want to dive into the code and make some changes, start with:

git clone [email protected]:laixintao/flameshow.git
cd flameshow
pip install poetry
poetry install

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