wg-performance Status Update 2022-01-31

[erwinmombay]

cc @ampproject/wg-performance

What was accomplished

Lessons Learned

What's Next

[samouri]

What was accomplished

I took a few days of vacation and shredded gnar ⛷️

• https://github.com/ampproject/amphtml/pull/37464
• https://github.com/ampproject/amphtml/pull/37482
• https://github.com/ampproject/amphtml/pull/37481
• https://github.com/ampproject/amphtml/pull/37471
• https://github.com/ampproject/amphtml/pull/37441
• https://github.com/ampproject/amphtml/pull/37436
• https://github.com/ampproject/amphtml/pull/37395
• Reading the WASM Spec

What's Next

• More WASM
• Last TS PR, then moving on: https://github.com/ampproject/amphtml/pull/37524

[alexnj]

What was accomplished

• A/B testing prototype: SPA and SSR examples completed.
• "Client-side A/B testing" proposal draft completed (go/client-ab).
• Initial performance comparison of A/B testing — tl;dr: no measurable performance impact found yet.

What's Next

• Incorporate review feedback into the proposal.
• Web stories cache increase: (AI pending) Collect the same data from AMP to see if same trend in AMP overall.

[jridgewell]

What was accomplished

• Not quick TC39 meeting
• WASM prototype is working, need to test with Compiler now
• Propagate importance in <img> SSR: cl/424730322
• Sped up sourcemaps, switched Babel to remapping: https://github.com/babel/babel/pull/14209

Lessons Learned

What's Next

• Running compiler in WASM

[erwinmombay]

What was accomplished

• Launch BASE_SSR experiment (part of amp-story experiment). dvh script polyfill, aspect ratio ssr, support landscape ssr, etc.
• Launch Amp Geo SSR experiment.

What's Next

• Create reduction of possible LCP spec bug/issue
• Finish url optimization in origin case.
• Work with stories team in regards to localization string optimizations