How can I customize sampling for page timing reports?

By default, 5% of all tracked events store information about the page performance. It is possible to customize it by adding a custom tag in the Tag Manager.

To increase the sample to 10% for example, follow these steps:

  1. Open Piwik PRO.
  2. Navigate to Menu > Tag Manager.
  3. Click + Create new tag.
  4. Name the tag.
  5. Select Custom asynchronous tag template and click Save.
  6. Paste the following code:
  7. <script>
      var _paq = _paq || [];
      _paq.push(['setTimingDataSamplingOnPageLoad', 10]);
    </script>

    In this code, you can change the number 10 to a different number to have a smaller or bigger sample. If you use 10 it means that 10% of the all tracked events will be measured to track the performance of pages.

  8. Click + Existing trigger.
  9. Pick the All page views trigger.
  10. Click Save.
  11. Click Publish.

If you increase the sample to a much greater value than 10%, it will increase the number of tracking requests significantly and may cause performance problems in the tracking.

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