[Webkit-unassigned] [Bug 180979] Web Inspector: Slow open time enumerating system fonts (FontCache::systemFontFamilies)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=180979

--- Comment #17 from Joseph Pecoraro <joepeck at webkit.org> ---
(In reply to Matt Baker from comment #13)
> (In reply to Joseph Pecoraro from comment #5)
> > One thing Web Inspector can do is to defer loading the system fonts closer
> > to when it is actually needed. Currently this is done immediately on opening
> > Web Inspector.
> 
> Should we bother with this enhancement? Sounds like the speedup is so great
> that there is no need.

On the iOS device I tested this still took >100ms. So we should consider it, but lets keep an eye on that. I don't think fonts can added to / modified iOS like they can on macOS, so it isn't as much of a concern. But I still think we can probably tweak this to defer some work during opening to a slightly better time.

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