Re: [w3ctag/design-reviews] Paint/presentation timestamps in performance APIs (Issue #1013)

xiaochengh left a comment (w3ctag/design-reviews#1013)

Hi @noamr, the TAG discussed it again at a Breakout today. Thanks for addressing our security and privacy concerns!

Regarding the usefulness, we would like to see more evidence. In particular, a study on when the new paint time is and is not a good performance indicator will help a lot. This will also help developers use it correctly.

The thread https://github.com/w3c/paint-timing/issues/62 didn't discuss much about the usefulness, but mainly focused on the technical soundness of the new paint time. And there are obvious scenarios where the new paint time might not be a good performance indicator. For example: image, video, gaming, video conference, ... (and anything with a significant graphics workload in general). We need a more thorough understanding here.

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