Performance Chat Summary: 11 June 2024

Meeting agenda here and the full chat log is available beginning here on Slack.


  • Welcome to our new members of #core-performance
  • 3.1.0 launched on June 6 to include new performance pluginPlugin A plugin is a piece of software containing a group of functions that can be added to a WordPress website. They can extend functionality or add new features to your WordPress websites. WordPress plugins are written in the PHP programming language and integrate seamlessly with WordPress. These can be free in the Plugin Directory or can be cost-based plugin from a third-party assets
  • Early WordPress 6.6 BetaBeta A pre-release of software that is given out to a large group of users to trial under real conditions. Beta versions have gone through alpha testing in-house and are generally fairly close in look, feel and function to the final product; however, design changes often occur as part of the process. 1 performance results [GitHub issue]
    • Early investigations did NOT show a regressionregression A software bug that breaks or degrades something that previously worked. Regressions are often treated as critical bugs or blockers. Recent regressions may be given higher priorities. A "3.6 regression" would be a bug in 3.6 that worked as intended in 3.5. at all, but instead shows that 6.6 Beta 1 is improved from 6.5.3 (conversation to be continued on the GitHubGitHub GitHub is a website that offers online implementation of git repositories that can easily be shared, copied and modified by other developers. Public repositories are free to host, private repositories require a paid subscription. GitHub introduced the concept of the ‘pull request’ where code changes done in branches by contributors can be reviewed and discussed before being merged be the repository owner. issue)
  • Contributor DayContributor Day Contributor Days are standalone days, frequently held before or after WordCamps but they can also happen at any time. They are events where people get together to work on various areas of There are many teams that people can participate in, each with a different focus. at WordCampWordCamp WordCamps are casual, locally-organized conferences covering everything related to WordPress. They're one of the places where the WordPress community comes together to teach one another what they’ve learned throughout the year and share the joy. Learn more. Europe, Turin, Italy on Thursday June 13

Priority Items

  • WordPress performance TracTrac An open source project by Edgewall Software that serves as a bug tracker and project management tool for WordPress. tickets
    • Current release (WP 6.6)
  • Performance Lab plugin (and other performance plugins)
    • Auto-Sizes for Lazy-Loaded Images
    • Embed Optimizer
    • Fetchpriority
    • Image Placeholders
    • Modern Image Formats
    • Optimization Detective
    • Performant Translations
    • Speculative Loading
  • Active priority projects

WordPress Performance Trac Tickets

Performance Lab Plugin (and other Performance Plugins)

  • @mukesh27 PR that ready for review:
    • PR #1298 – Audit Autoloaded Options Site Health should extend CoreCore Core is the set of software required to run WordPress. The Core Development Team builds WordPress.’s check if available
  • @joemcgill Also worth noting that Chrome 126 is scheduled to ship today with auto-sizes support turned on, so we should be able to get better testing feedback soon from folks using that feature pluginFeature Plugin A plugin that was created with the intention of eventually being proposed for inclusion in WordPress Core. See Features as Plugins..
    • @westonruter opened in order to do a quick minor releaseMinor Release A set of releases or versions having the same minor version number may be collectively referred to as .x , for example version 5.2.x to refer to versions 5.2, 5.2.1, 5.2.3, and all other versions in the 5.2 (five dot two) branch of that software. Minor Releases often make improvements to existing features and functionality. of Optimization Detective and could use reviews

Active Priority Projects

Improving the calculation of image size attributes

  • @mukesh27 has been working on improved image sizes algorithm
    • PRs merged:
      • PR #1250 – Initial implementation of improved image sizes algorithm
    • PRs ready for review:
      • PR #1290 – improved image sizes for left/right alignment
      • PR #1252 – Use correct sizes for small images

Optimized Autoloaded Options

Improved template loading

  • @thekt12 I have raised a new bugbug A bug is an error or unexpected result. Performance improvements, code optimization, and are considered enhancements, not defects. After feature freeze, only bugs are dealt with, with regressions (adverse changes from the previous version) being the highest priority. #61405 (with a POC that currently breaks some tests ). Same pattern was also observed in WP_Theme_JSON_Data::$theme_json, but I am not sure of the performance impact it will have. PR#6781 will address the remainder of #57789 and #59600 ; estimated to give at least 3% improvement.

Open Floor

Our next chat will be held on Tuesday, June 18, 2024 at 15:00 UTC in the #core-performance channel in Slack.

#core-performance, #performance, #performance-chat, #summary