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browser-profiler

1.0.1 • Public • Published

browser-profiler

simple real world browser profiler. measures an event, reloads the page for you, and reports results.

usage

<html>
  ...
  <!-- 1. include the script at the bottom of your body -->
  <script src="//raw.githubusercontent.com/bcherny/browser-profiler/master/index.js"></script> 
 
  <!-- 2. set up the profiler -->
  <script>
    window.myProfiler = new Profiler('MY_PROFILE')
  </script> 
 
  <!-- 3. profile an operation -->
  <script>
    const startTime = window.performance.now()
    doSomeOperation()
    const endTime = window.performance.now()
    window.myProfiler.done(endTime - startTime)
  </script> 
</body>
</html>

after 20 runs, your results will be logged out to the console:

MY_PROFILE completed 20 runs! {
  stats: {
    mean: 227.84,
    stdev: 7.60
  },
  times: [
    225.01,
    228.84,
    ...
  ]
}

tips for getting consistent profile results

  • close devtools
  • disable all Chrome extensions (or run in incognito and ensure that all extensions are disabled)
  • ensure that your tab is running in its own window, without other tabs open (see why here)
  • avoid interacting with your machine while the Profiler is running

Dependents (1)

Package Sidebar

Install

npm i browser-profiler

Repository

github.com/bcherny/browser-profiler

Homepage

github.com/bcherny/browser-profiler#readme

Weekly Downloads

1

Version

1.0.1

License

CC-BY-4.0

Last publish

Collaborators

  • bcherny
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