Performance team meeting summary 16 August 2022

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

Announcements

• @mxbclang: Team Rep nominations reminder
• @mxbclang: Offline August 22 – September 9

Focus group updates

Images

@adamsilverstein @mikeschroder

GitHub project

• @adamsilverstein: Continued work refining our follow up patches for the multi-mime/WebP feature
  • Ready: Fixes for unit tests
  • Nearing completion:
    • Updating “add_image_size” to support mime types
    • Plugin integration points
    • Edit/restore flows multi-mime support – ready for review
    • Shim for non-supporting browsers – ready for review
    • PDF support – ready for review
• Work to add support for multiple mime types across coreCore Core is the set of software required to run WordPress. The Core Development Team builds WordPress. media functions continues in https://github.com/WordPress/wordpress-develop/pull/3074 (for https://core.trac.wordpress.org/ticket/56349)
• @joegrainger: Working on further updates and feedback on Module Proposal: Regenerate Existing Images #445 and core patchpatch A special text file that describes changes to code, by identifying the files and lines which are added, removed, and altered. It may also be referred to as a diff. A patch can be applied to a codebase for testing. for Update core functions to support multiple mime types #3074
• Follow-up on SVG uploads
  • Last week’s discussion
  • @pbearne: We could support both by a toggle/filterFilter Filters are one of the two types of Hooks https://codex.wordpress.org/Plugin_API/Hooks. They provide a way for functions to modify data of other functions. They are the counterpart to Actions. Unlike Actions, filters are meant to work in an isolated manner, and should never have side effects such as affecting global variables and output. setting
  • @antelaca: Each of the third party solutions are using the same library for SVG sanitization, https://github.com/darylldoyle/svg-sanitizer. Idea is to use the same approach and simplify the implementation a bit using one class.
  • @adamsilverstein: Some concerns on the original ticketticket Created for both bug reports and feature development on the bug tracker. about how effective the sanitizer is; are we willing to accept the risk of enabling SVGs? “Static” SVGs implies that there’s a blocked list of tags that’s excluded
  • @masteradhoc: Yes, but using a sanitizing library makes a lot of sense
  • @adamsilverstein: Library looks well-tested. Maybe initial approach could enable only SVGs as images.
• Follow-up on Dominant Color in core
  • @pbearne: Flagged some feedback on that post
  • @mxbclang: General concern seems to be that this is not actually a performance improvement but an improvement to UXUX User experience in terms of how a site feels it’s performing
  • @pbearne: Found that it does provide a web vitals boost and believe it’s best practice
  • @adamsilverstein: Agree that this helps perceived performance; though it may not have a measurable effect, how users experience a site is actually a performance concern so this is a real improvement. Other technical concern was from David about potential bloating of the meta table, which we should respond to directly. @pbearne will reply.

Feedback requested

• See above
• Needs Discussion (10 issues)

Object Cache

@tillkruess @spacedmonkey

GitHub project

• @tillkruess: Focused on getting the Object Cache Site Health test merged into core in https://github.com/WordPress/wordpress-develop/pull/2890 with @furi3r; core developer feedback appreciated

Feedback requested

• See above
• Needs Discussion (3 issues)
• Needs Review (1 issue)

Site Health

N/A

GitHub project

• We’re seeking 1-2 POCs for this group; if you’re interested, please comment here or pingPing The act of sending a very small amount of data to an end point. Ping is used in computer science to illicit a response from a target server to test it’s connection. Ping is also a term used by Slack users to @ someone or send them a direct message (DM). Users might say something along the lines of “Ping me when the meeting starts.” in SlackSlack Slack is a Collaborative Group Chat Platform https://slack.com/. The WordPress community has its own Slack Channel at https://make.wordpress.org/chat/.
• See above re: Object Cache Site Health check

Feedback requested

• Needs Discussion (9 issues)

Measurement

N/A

GitHub project

• We’re seeking 1-2 POCs for this group; if you’re interested, please comment here or ping in Slack
• @mxbclang: Reminder about the performance testing environment work started back in March: https://make.wordpress.org/core/2022/03/22/performance-team-meeting-summary-22-march-2022/. This has stalled out since then; if anyone is interested in picking it back up, let us know.

Feedback requested

• Needs Discussion (5 issues)
• Needs Review (1 issue)

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. https://www.javascript.com/.

@aristath @sergiomdgomes

GitHub project

• @adamsilverstein: For the preload resources work, proposed a new, more declarative way to specify preloads in https://github.com/WordPress/wordpress-develop/pull/3089; appreciate any feedback.

Feedback requested

• Tree-shaking block styles on the frontend #41020
• Needs Discussion (2 issues)
• Needs Review (3 issues)

Infrastructure

@flixos90

GitHub project

• N/A

Feedback requested

• See above
• Needs Discussion (5 issues)
• Needs Review (3 issues)

Open Floor

• @olliejones: There’s a Site Health and Troubleshooting plugin, and similar but not identical functionality in core. Is there any plan to incorporate that 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 WordPress.org Plugin Directory https://wordpress.org/plugins/ or can be cost-based plugin from a third-party into core? Or do Performance Lab modules need to target both environments?
  • @mxbclang: Someone manages that plugin, but not sure who; might be worth asking in the #meta channel

Our next chat will be held on Tuesday, August 23, 2022 at 11am EDT in the #core-performance channel in Slack.

#core-js, #core-media, #performance, #performance-chat, #summary, #hosting-community