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# perf-timeline.js | ||
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[http://nicj.net](http://nicj.net) | ||
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Licensed under the MIT license | ||
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## Introduction | ||
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`perf-timeline.js` is a [GreaseMonkey](http://www.greasespot.net/) and [TamperMonkey](https://tampermonkey.net/) extension | ||
that shows a live timeline of performance data without having to open the developer tools. | ||
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It is an demo project showing the data you can get for Real User Monitoring (RUM) based on the | ||
talk [Measuring Continuity](https://www.slideshare.net/nicjansma/measuring-continuity). Some of the performance data captured: | ||
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* Page Busy % | ||
* FPS | ||
* Video FPS | ||
* # of JavaScript Errors | ||
* Scroll Pixels | ||
* Scroll % | ||
* Click count | ||
* Mouse Move Pixels | ||
* Mouse Move % | ||
* Keypress count | ||
* Resources fetched count | ||
* DOM Change Count | ||
* DOM Change % | ||
* DOM Node Count | ||
* DOM Size Count | ||
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## Usage | ||
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Copy the contents of `perf-timeline.js` into GreaseMonkey or TamperMonkey. |