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MediaWiki extensions manual

NavigationTiming Release status: stable
Implementation	Ajax
Description	Logs perceived latency measurements from client-side
Author(s)	Patrick Reilly, Ori Livneh, Asher Feldman, Timo Tijhof, Ian Marlier
Compatibility policy	Snapshots releases along with MediaWiki. Master is not backward compatible.
Database changes	No
License	GNU General Public License 2.0 or later
Download	Download extension Git [?]: Browse repository (GitHub) Gerrit code review Git commit log Download source tarball README
Parameters $wgNavigationTimingSamplingFactor $wgNavigationTimingCpuBenchmarkSamplingFactor
Hooks used BeforePageDisplay
Quarterly downloads	3 (Ranked 130th)
Public wikis using	846 (Ranked 308th)
Translate the NavigationTiming extension if it is available at translatewiki.net
Issues	Open tasks · Report a bug

The NavigationTiming extension measures perceived latency in browsers. The extension is named after the W3C Navigation Timing API in web browsers, but today collects metrics from several different browser APIs.

FAQ

Skop

Lolombus dii monimung kopoilaan do aiso ngaran mantad pomitanan kopokitanan bolikan. Kopomogunaan koleksi JavaScript om mantad dii abatod so bolikankopokitanan diiː

1. are from a modern browser, as defined by the Grade A capability check (90%+ of traffic).
2. have the Navigation Timing API, (98% of browser traffic in 2022, 95% in Nov 2017)
3. reach the "page loaded" event (99%+ of page loads).
4. are in the random sample (configurable).

How is the information used?

Infrastructure for navtiming at WMF.

Engineers at Wikimedia Foundation intend to use this data to assess the impact (positive and negative) of changes to application code and server configuration. Thus guiding on-going work on site performance.

Dependencies

• EventLogging

Installation

• Download om powili'o file(s) dii id direktori kingaran NavigationTiming id suang folder extensions/ nu.
  Momomoburu om mongunguhup kod minog do papadakat do lolombus from Git suai ko, momoguno:cd extensions/
git clone https://gerrit.wikimedia.org/r/mediawiki/extensions/NavigationTiming
• Add the following code at the bottom of your LocalSettings.php file:

  wfLoadExtension( 'NavigationTiming' );
  $wgNavigationTimingSamplingFactor = 1;  // 100% (1 of every 1)
  

• Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.

Further reading

About the data we collect:

• Explainer of navtiming metrics, Wikitech.
• Wikimedia Grafana: Navigation Timing dashboard, grafana.wikimedia.org
• Performance infrastructure, Wikitech.

About the Navigation Timing API in web browsers:

• Navigation Timing API, specification from the W3C.
• Annotated Timing object: simplified descriptions of the measurements.
• Measuring Page Load Speed with Navigation Timing, HTML5 Rocks.

Code stewardship

• Maintained by Unknown or Unassigned^{[‍Maintainers page]}.
• Issue tracker: Phabricator MediaWiki-extensions-NavigationTiming (Report an issue)