https://github.com/mapbox/flamebearer

Blazing fast flame graph tool for V8 and Node 🔥
https://github.com/mapbox/flamebearer

flame-graph javascript node performance profiling v8 visualization

Last synced: about 2 months ago
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Blazing fast flame graph tool for V8 and Node 🔥

• Host: GitHub
• URL: https://github.com/mapbox/flamebearer
• Owner: mapbox
• License: isc
• Created: 2018-03-29T13:09:53.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2021-10-18T07:23:37.000Z (almost 3 years ago)
• Last Synced: 2024-05-17T02:42:45.974Z (4 months ago)
• Topics: flame-graph, javascript, node, performance, profiling, v8, visualization
• Language: JavaScript
• Homepage:
• Size: 544 KB
• Stars: 1,625
• Watchers: 123
• Forks: 26
• Open Issues: 7
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# 🔥 flamebearer

A blazing fast [flame graph](http://www.brendangregg.com/flamegraphs.html) tool for Node and V8.

Used to visualize and explore performance profiling results.

Designed to produce fast, lightweight flame graphs that remain responsive even on really big input.

## [Example graph](https://mapbox.github.io/flamebearer/examples/rollup.html)

## Usage

Use the [online version](https://mapbox.github.io/flamebearer/), or the command line tool:

```bash

# install flamebearer (Node v8.5+ required)

$ npm install -g flamebearer

# profile your app

$ node --prof app.js

# generate flamegraph.html from a V8 log and open it in the browser

$ node --prof-process --preprocess -j isolate*.log | flamebearer

```

## Thanks

- [Brendan Gregg](http://brendangregg.com/) for creating the [concept](https://queue.acm.org/detail.cfm?id=2927301) and maintaining the [reference implementation](http://brendangregg.com/flamegraphs.html).

- [David Mark Clements](https://github.com/davidmarkclements) for creating [0x](https://github.com/davidmarkclements/0x) which inspired this project.

- [Bernard Cornwell](http://www.bernardcornwell.net/books/) for the amazing books this project took its name from.