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  * Main Process Modules 
  * contentTracing 

On this page

#  contentTracing

> Collect tracing data from Chromium to find performance bottlenecks and slow
> operations.

Process: [ Main ](/docs/latest/glossary#main-process)

This module does not include a web interface. To view recorded traces, use [
trace viewer
](https://chromium.googlesource.com/catapult/+/HEAD/tracing/README.md) ,
available at ` chrome://tracing ` in Chrome.

**Note:** You should not use this module until the ` ready ` event of the app
module is emitted.

    
    
    const { app, contentTracing } = require('electron')  
      
    app.whenReady().then(() => {  
      (async () => {  
        await contentTracing.startRecording({  
          included_categories: ['*']  
        })  
        console