Performance Chat Summary: 13 February 2024

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


  • Welcome to our new members of #core-performance
  • Release 2.9.0 of the Performance Lab plugin is scheduled for Monday February 19
  • Call for opinions on the naming of the ‘Image Loading Optimizations’ plugin [see here]

Priority Projects

Server Response Time

Notes from today’s meeting:

  • @thekt12 This is something I was working on,
    new changes has caused some test to fail. The issue is with older test cases. I’ll give a final look tomorrow
  • @joemcgill I ran some profiling on the improvements we made to block varations (#59969) and am showing that this has made a noticeable reduction to server response times, e.g. ~5-7%
  • @joemcgill Yesterday, I also identified an issue with the new Plugin Dependencies feature that was negatively impacting server timing. #60518 is fixed for beta 1 and it looks like we’ve mostly recovered from the regressions that were previously discovered, but we’ll take new benchmarks after Beta 1 is released today

Database Optimization

Notes from today’s meeting:

  • No updates this week

JavaScript & CSS

Notes from today’s meeting:


Notes from today’s meeting:


Notes from today’s meeting:

  • @joemcgill Nothing specific to report against those milestones. Now that we’re getting into the part of the release cycle where we’ll be doing lots of benchmarks, I suspect we’ll identify some opportunities to streamline things a bit. I also think that @oandregal was working on some improvements to the GB tests that would have caught some regressions that were not caught until after the sync. I’d be curious to know if there are ways we can support that work for the future?
  • @joemcgill Some initial performance benchmarks for 6.5-beta1 against 6.4.3, for anyone interested:

Ecosystem Tools

  • Link to the GitHub repo for Plugin Checker
  • Contributors: @mukesh27 @swissspidy
  • Projects from the 2024 roadmap:
    • Creating standalone plugins milestone 2
    • Plugin checker
    • Reusable testing environment

Notes from today’s meeting:

Open Floor

  • Suggestion from @joemcgill and @swissspidy to rethink the structure of the chat to align with the Core Dev Chat
    • For the past couple of weeks, the Core Dev-chat has attempted to spend more time synchronously discussing a proposal or pending issue, and having most updates linked in the agenda with the expectation that folks are reading the information ahead of the meeting. So far, it’s led to more engaging chats. Perhaps there are ways to do something similar here?
  • @clarkeemily is away on holiday next week, so @joemcgill will run the chat

Our next chat will be held on Tuesday, February 20, 2024 at 16:00 UTC in the #core-performance channel in Slack.

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

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