On Wed, Nov 20, 2024 at 3:35 PM Yoav Weiss (@Shopify) < yoavwe...@chromium.org> wrote:
> > > On Wednesday, November 13, 2024 at 1:14:43 PM UTC+1 Chromestatus wrote: > > Contact emails nrosent...@chromium.org, mmo...@chromium.org > > Explainer https://github.com/w3c/paint-timing/blob/main/presentation- > timestamps.md#security--privacy-self-review > > Specification https://w3c.github.io/paint-timing/#mark-paint-timing > > Design docs > https://docs.google.com/document/d/1VxgMf1wlWzB4ViAW4ohkOe3AT0wQZ > Kk7hC3IVq-cuw0/edit?tab=t.0#heading=h.fmic3y1ir4 > > Summary > > All element-timing and LCP performance entries would have a non-zero > renderTime, even if they are cross-origin without Timing-Allow-Origin. All > presentation timestamps (renderTime, paint timing start time, event timing > end time) will be coarsened to a 4ms multiple to mitigate the risk of > reading cross-origin image information. > > > Blink component Blink>PerformanceAPIs > <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EPerformanceAPIs> > > TAG review None > > > I agree that given the lack of API shape changes, no TAG review is > required. > > > > > TAG review status Not applicable > > Risks > > > Interoperability and Compatibility > > This would un-zero metrics in RUM dashboards, which is generally positive. > The coarsening might move LCP/FCP metrics by ~2ms in average, which RUM > providers should be notified on. > > Have y'all done some outreach? > Yes, we've discussed this with RUM providers in 1:1, in social media posts, Slack, and also on the WebPerfWG. Will reach out again close to shipping time. > > > > Will this feature be supported on all six Blink platforms (Windows, Mac, > Linux, ChromeOS, Android, and Android WebView)? No > > > I'm guessing this should be "yes"? > > Oops, yes. updated the chromestatus entry. -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+unsubscr...@chromium.org. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAJn%3DMYb%3DRZ0uT-qnxDcxb9u7Z1Qghargef9_Wi7_rH9xRO_qOg%40mail.gmail.com.
