Performance Chat Summary: 19 March 2024

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


  • Welcome to our new members of #core-performance
  • WordPress 6.5 Release Candidaterelease candidate One of the final stages in the version release cycle, this version signals the potential to be a final release to the public. Also see alpha (beta). 3 is today (Mar 19)
  • Reminder on timezone difference for the next week, this chat will remain at 16:00 UTC and then shift to 15:00 UTC from April 2, 2024

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
    • Future release
  • Performance Lab 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 (and other performance plugins)
  • Active priority projects
    • INP research opportunities
    • Improve template loading
    • Plugin checker

WordPress Performance Trac Tickets

Performance Lab Plugin (and other Performance Plugins)

Active Priority Projects

Plugin Checker

  • No updates this week, will be removed from agenda moving forwards unless there are proactive updates on release 1.1

Improve template loading

  • @thekt12 I should be able to raise a PR for review today, for #59600 including template part caching

INP research opportunities

  • @adamsilverstein I have continued working on INP research in a colab nostly by querying httparchive data. Recently I added a few new queries that gather:
    • Plugins on WordPress sites with not good INP (based on Wapalyzer detection)
    • Long task scripts on WordPress sites with not good INP (using the long task audit)
    • Long task scripts on WordPress sites overall
  • I then focused in on scripts by path and ran some group queries that only look at the path. Removing the host part ensures we catch common scripts that run across many WordPress sites. Finally, I am grouping by host to see if any 3p stand out at a top level. I’m collecting all the resulting data in a sheet and will soon be ready to summarize the findings in a doc and share everything!

Open Floor

Our next chat will be held on Tuesday, March 26, 2024 at 16:00 UTC in the #core-performance channel in Slack.

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