In the meantime we have a spec draft: https://wicg.github.io/performance-measure-memory There is a pending change [1] to restrict the scope of the API to the current process (i.e. the current address space).
Could you please take a look and give Webkit's position on the API? Thank you, Ulan. [1]: https://github.com/WICG/performance-measure-memory/pull/23 On Thu, Apr 2, 2020 at 2:17 PM Ulan Degenbaev <u...@google.com> wrote: > Hello webkit-dev, > > I'd like to solicit feedback as well as an official position from Webkit on > our proposal for the new memory measurement API: > https://github.com/WICG/performance-measure-memory > > The proposal generalizes the previous performance-memory proposal [1] that > was abandoned [2] due to information leak of cross-origin resources. The > new API addresses the information leak and process model issues raised in > the previous feedback [3]. > > What is different in the new API? > > - It relies on COOP+COEP [4] for preventing cross-origin information leaks > (see "Security Considerations"). Besides security, COOP+COEP also helps > implementability because the browser needs to isolate the web page from > other web pages. > - It does not assume any particular process model and is defined using the > standard concepts such as JS agent cluster and browsing context group. > - It has an extensible and generic interface for breaking down memory > usage by type (JS, DOM, GPU) and owner. Implementers can choose the level > of detail they are willing to provide based on their performance trade-offs > (see "Performance Considerations"). > > Thank you, > Ulan. > > [1]: The previous proposal: > https://github.com/WICG/performance-memory/blob/master/explainer.md > [2]: Information leak affecting the previous proposal: > https://github.com/mozilla/standards-positions/issues/85#issuecomment-426382208 > [3]: Feedback from Apple on the previous proposal: > https://github.com/WICG/performance-memory/issues/14 > [4]: COOP and COEP explained: > https://docs.google.com/document/d/1zDlfvfTJ_9e8Jdc8ehuV4zMEu9ySMCiTGMS9y0GU92k/edit > > Other Relevant Links > > Explainer: https://github.com/WICG/performance-measure-memory > Open issues: https://github.com/WICG/performance-measure-memory/issues > WebPerf WG F2F June 2019 presentation (for older iteration of the API): > > https://docs.google.com/document/d/1uQ7pXwuBv-1jitYou7TALJxV0tllXLxTyEjA2n1mSzY/edit#heading=h.x0ih8vnl6qwo > TAG design review (for older iteration of the API): > https://github.com/w3ctag/design-reviews/issues/386 > Issue on Mozilla standards-positions: > https://github.com/mozilla/standards-positions/issues/281 >
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