Performance Chat Summary: 23 January 2024

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


Priority Projects

Server Response Time

Notes from today’s call:

Database Optimization

Notes from today’s call:

JavaScriptJavaScript JavaScript or JS is an object-oriented computer programming language commonly used to create interactive effects within web browsers. WordPress makes extensive use of JS for a better user experience. While PHP is executed on the server, JS executes within a user’s browser. & CSSCSS Cascading Style Sheets.

  • Link to roadmap project and link to the GitHub project board
  • Contributors: @mukesh27 @flixos90 @westonruter
  • Projects from the 2024 roadmap:
    • INP opportunities research
    • Interactivity APIAPI An API or Application Programming Interface is a software intermediary that allows programs to interact with each other and share data in limited, clearly defined ways.
    • Speculative prerendering

Notes from today’s call:

  • No updates this week


Notes from today’s call:

  • @westonruter For Image Loading Optimization, the PR to preload the background-image for the LCP element just needs one more review to merge. Again, I found this change to reduce LCP-TTFB by ~9% when, for example, the LCP elemment is a Group blockBlock Block is the abstract term used to describe units of markup that, composed together, form the content or layout of a webpage using the WordPress editor. The idea combines concepts of what in the past may have achieved with shortcodes, custom HTML, and embed discovery into a single consistent API and user experience. with a background image or a Cover block with parallax. Otherwise, I’ve been working with @thelovekesh on eliminating loading the web-vitals library from unpkg.
  • @adamsilverstein The PR to land AVIF is ready for testing; at this point I am waiting for support to land in Edge stable before committing, not sure that will in time for 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. cutoff though
  • @swissspidy For client side image compression I’m currently working on ways to make the performance impact more measurable and documenting that. In the meantime, my Media Experiments 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 can now be tested on WordPress Playground to familiarize oneself with how seamless it all is.
  • @joemcgill As mentioned earlier, the experimental plugin for supporting auto-sizes is now available. I’m tracking an issue that is effecting WP galleries when this is in use. Additional testing and feedback of this feature (requires Chrome 121+) would be appreciated.


Notes from today’s call:

  • @joemcgill Still need to look into the failures on the 6.4 branchbranch A directory in Subversion. WordPress uses branches to store the latest development code for each major release (3.9, 4.0, etc.). Branches are then updated with code for any minor releases of that branch. Sometimes, a major version of WordPress and its minor versions are collectively referred to as a "branch", such as "the 4.0 branch". #60127

Ecosystem Tools

Notes from today’s call:

Open Floor

  • No updates today

Our next chat will be held on Tuesday, January 30, 2024 at 16:00 UTC in the #core-performance channel in Slack.

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