Yes, the OT expired and I'd like to run a new one. There was no way to
input the "beginning milestone number" for the extension in Chromestatus.


On Mon, Jul 22, 2024 at 5:56 PM Mike Taylor <[email protected]> wrote:

> Just to clarify: this ran as an OT from 115 to 117, and has been disabled
> since then?
>
> And you're requesting to run another OT (vs extending a currently active
> one) from 129 to 131.
>
> Do I have that correct?
> On 7/22/24 5:56 AM, 'Marja Hölttä' via blink-dev wrote:
>
> Contact emails [email protected], [email protected]
>
> Explainer
> https://github.com/explainers-by-googlers/explicit-javascript-compile-hints-file-based/blob/main/README.md
>
> Specification None
>
> Summary
>
> Allow attaching information about which functions should be eager parsed &
> compiled in JavaScript files. The information will be encoded as magic
> comments. We'll first target launching the file-based explicit compile
> hints, and as a follow up, investigate selecting individual functions for
> eager compilation.
>
>
> Blink component Blink>JavaScript
> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EJavaScript>
>
> TAG review
>
> TAG review status Pending
>
> Chromium Trial Name JavaScriptCompileHintsMagic
>
> Link to origin trial feedback summary
> https://google.qualtrics.com/jfe/form/SV_9SLyOGnTj2cwo0C
>
> Origin Trial documentation link
> https://docs.google.com/document/d/19xTAM4A75tz0xUq_velMzGA4JHEgXpyflUxXTcuNiyE/edit?usp=sharing
>
> Risks
>
>
> Interoperability and Compatibility
>
> No interoperability / compatibility risks. Other browsers are likely to
> ignore the hints if they perceive they cannot benefit from them. Ignoring
> the hint is allowed behavior. We plan to make the hints generic though, so
> that other browsers can later start to support them too, e.g., if they
> implement background parsing / compilation.
>
>
> *Gecko*: N/A (https://github.com/mozilla/standards-positions/issues/780)
>
> *WebKit*: N/A (https://github.com/WebKit/standards-positions/issues/172)
>
> *Web developers*: Positive Positive signals from partners who want to use
> compile hints to eager-compile core JS files.
>
> *Other signals*:
>
> WebView application risks
>
> Does this intent deprecate or change behavior of existing APIs, such that
> it has potentially high risk for Android WebView-based applications?
>
>
> Goals for experimentation We'd like to measure the performance of the
> improved feature implementation in userland partner metrics.
>
> Reason this experiment is being extended
>
> The origin trial configuration for this feature was broken in M115-M116,
> and the users weren't able to run the experiments.
>
>
> Reason this experiment is being extended
>
> We did an origin trial in versions 115-117. We modified the feature based
> on the results (performance measurements by Google Workspace) and we'd now
> like to do another origin trial with the modified feature, in versions
> 129-131.
>
>
> Ongoing technical constraints
>
> Debuggability
>
> Will this feature be supported on all six Blink platforms (Windows, Mac,
> Linux, ChromeOS, Android, and Android WebView)? Yes
>
> Is this feature fully tested by web-platform-tests
> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
> ? No
>
> The feature doesn't trigger any functional changes and cannot be tested by
> WPT.
>
>
> Flag name on chrome://flags
>
> Finch feature name None
>
> Non-finch justification None
>
> Requires code in //chrome? False
>
> Tracking bug https://bugs.chromium.org/p/v8/issues/detail?id=13917
>
> Estimated milestones
> Origin trial desktop first 115
> Origin trial desktop last 117
> Origin trial extension 1 end milestone 120
> Origin trial extension 2 end milestone 131
>
> Link to entry on the Chrome Platform Status
> https://chromestatus.com/feature/5100466238652416?gate=5198754872819712
>
> Links to previous Intent discussions Intent to Experiment:
> https://groups.google.com/a/chromium.org/g/blink-dev/c/BmN1Wus8V1s/m/3L2uU-wGAgAJ
> Intent to Extend Experiment 1:
> https://groups.google.com/a/chromium.org/g/blink-dev/c/BmN1Wus8V1s/m/rhtpXTyPCgAJ
>
>
>
> This intent message was generated by Chrome Platform Status
> <https://chromestatus.com/>.
>
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