Performance Chat Summary: 6 December 2022

Table of Contents

Focus area updates

@adamsilverstein: New ticket to ensure core support for WebP is complete: #57328
- When WebP was introduced to core, the implementation focused primarily on the most common use – lossy images. Part of the reason is that although WebP supports lossless compression, alpha transparency and animation as a format, actual support in WordPress depends on the underlying graphics engine (GD/Imagick) where support for these is more varied (for example GD only supports lossless WebP since version 2.3.3 and PHP vs 8.1). Furthermore, detecting support for these features of the format is difficult or maybe not possible.
- If anyone has the bandwidth to dig into this issue, guessing we can improve the current implementation to better match the expectations outlined in the ticket.
@spacedmonkey: Any updates on SVG?
- @adamsilverstein: Some recent discussions (see https://github.com/WordPress/wporg-mu-plugins/issues/300), but nothing very recently
- @mxbclang: No one is currently working on it as other priorities have taken precedence

@spacedmonkey: Working on theme.json issues, following code paths and making that code faster. Looping back on adding caching to WP_User_Query (adding tests) and migrating get_pages to use get_posts. Committed:

N/A

@mxbclang: SQLite module has been approved though we would welcome additional review: https://github.com/WordPress/performance/pull/547
- Planning to merge by end of week, so if you want to review, please do so by end of day Wednesday
- @mxbclang will drop a message in #core-performance to let the team now when it is merged and ready for testing
- Welcome as many testers as possible in advance of release of 1.8.0 on December 19

@mxbclang via @flixos90: Aiming to complete Server-Timing PR including testing this week, so pending that will request reviews by end of week. Reviews already welcome and much appreciated, particularly around how the API looks and behaves.