Performance team meeting summary 10 May 2022

Table of Contents

Focus group updates

@adamsilverstein: Refreshed the core WebP patch against trunk and started separate follow-up PRs for new featured added to the plugin since then.
@shetheliving: Getting pretty close to wrapping up initial proposals for API to facilitate more accurate sizes #140 and Regenerate existing images #24; next steps will be more detailed design docs and core feature proposals. Research continues on Research: Impact of additional WebP images on upload #289 and Research: WebP compatibility #290 and we’ll draft a follow-up post about our findings and next steps.
@adamsilverstein: For Research: Impact of additional WebP images on upload #289, working on a survey for hosting providers to gather some field data about file count and size limitations
@eugenemanuilov: If there’s someone who has Outlook and Windows, please test if WebP is supported for Research: WebP compatibility #290
- @codekraft: Looks like it’s supported in the most recent version
@adamsilverstein: Found this summary of WebP support in OG tags; looks like sites should stick with JPEG for OG tags

@spacedmonkey: Did some profiling on Full Site Editing with WP 6.0 RC1; found some performance regressions and created some fixes. All are merged and will be in WP 6.0 RC2 and result in significant improvements:
- https://github.com/WordPress/gutenberg/pull/40571
- https://github.com/WordPress/gutenberg/pull/40572
- https://github.com/WordPress/gutenberg/pull/40752
- https://github.com/WordPress/gutenberg/pull/40853 (image-related)
- @adamsilverstein: Great to see; there are probably other fixes that can be made directly in Gutenberg
@spacedmonkey: For 6.1, want to spend time profiling Gutenberg, Full Site Editing, and the REST API for performance issues; XWP team has already identified 7 issues in the REST API around queries and cache priming. Examples:
- https://core.trac.wordpress.org/ticket/55594
- https://core.trac.wordpress.org/ticket/55620
- https://core.trac.wordpress.org/ticket/55592
- @furi3r also working on some of these

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We’re seeking 1-2 POCs for this group; if you’re interested, please comment here or ping in Slack
@furi3r: Add Site Health test for full page caching (advanced cache) #220 is almost ready to be merged

N/A

We’re seeking 1-2 POCs for this group; if you’re interested, please comment here or ping in Slack
No updates

@flixos90: Plugin now has a generator meta tag per Add generator tag with plugin version and modules #321
- This will help us gather important metrics on the performance impact of the plugin
- Looking into how to gather metrics and eventually plan to document how we can do this throughout the plugin
@flixos90: Vote for release plugin cadence is complete and we voted to release monthly on the third Monday
- This means 1.1.0 is just six days away
- We’ll have our regular release party on Monday, May 16, 2022 at 1pm EDT in the #performance channel
- We also have a release tracking issue here
- Please review all PRs for the release; if they’re not merged by Friday, they will be punted to 1.2.0