Re: NavigationTiming event for initial display

Sorry not sure I quite understand your comment here.


On Tue, Aug 9, 2016 at 12:32 PM, Stefan Seifert <nine@detonation.org> wrote:

> Hi,
>
> On Donnerstag, 23. Juni 2016 08:41:33 CEST Ben Maurer wrote:
>
> > Just wanted to share some thoughts here based on our measurement
> experience
> > at Facebook. While the FirstPaint and FirstContentfulPaint events are
> > interesting I don't think these reflect the actual loading times of
> > non-trivial applications. Many sites load their content incrementally and
> > these statistics are unlikely to capture just the right subset of
> content.
>
> I guess attaching timing information to DOM nodes like time from start of
> page
> load until this node was first (partially) painted would by itself create
> performance issues? If not, that could leave the choice of the "right"
> subset

The timing info is attaching to the window and not to individual DOM nodes.
As such there is no performance concern for exposing the suggested first
paint metrics.

>

of the content to the developer.
>

Sorry, I'm confused. Are you suggesting having the developer indicate the
"right" subset of the content for the case of "First Meaningful Paint" ? Or
something else ?




> Stefan
>