[webkit-dev] Suggesting to enable paint timing by default

[Noam Rosenthal]

On Tue, May 12, 2020 at 10:28 AM Maciej Stachowiak <mjs at apple.com> wrote:

>
>
> On May 11, 2020, at 9:53 PM, Noam Rosenthal <noam at webkit.org> wrote:
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>
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> On Tue, May 12, 2020 at 1:36 AM Maciej Stachowiak <mjs at apple.com> wrote:
>
>>
>> I noticed from comments in one of the Radars that the patch may result in
>> an additional “fake paint”, so it should probably be performance tested.
>> Have you done any testing?
>>
> I've tested it locally, I haven't noticed any significant side effect,
> because in complex situations the fake paint only happens once per page and
> bails early once contentfulness is detected. but I can run any additional
> test needed.
>
>
>> We’ll likely want to A/B some of Apple’s page load speed benchmarks.
>>
> A/B testing load speed sounds sensible. How do we go about doing that?
>
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> Unfortunately our page load speed benchmarks are not public because they
> incorporate captured page content, which we can’t freely redistribute.
>
> A helpful person from Apple may be able to set up an A/B test for this
> patch.
>
 Understood. I'd be happy to facilitate/support/do what's necessary to move
this forward.
Thanks!
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