[Webkit-unassigned] [Bug 196062] Certain WebProcesses should opt-out of the freezer

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=196062

--- Comment #4 from Chris Dumez <cdumez at apple.com> ---
(In reply to Brady Eidson from comment #3)
> (In reply to Chris Dumez from comment #2)
> > (In reply to Brady Eidson from comment #1)
> > > (In reply to Brady Eidson from comment #0)
> > > > Certain WebProcesses should opt-out of the freezer
> > > > 
> > > > These include:
> > > > -Prewarmed web processes
> > > > -Processes in the per-domain-process cache
> > > > -Processes in the back/forward cache list
> > > 
> > > Actually that last one is not true. It's "processes that *only host* pages
> > > in the back/forward cache list" and such processes should also already be in
> > > the per-domain-process-cache.
> > > 
> > > Yay.
> > 
> > Processes with suspended pages are NOT in the WebProcess cache, even when
> > they have no WebPage on the WebProcess side.
> 
> This is confusing. You're saying a process that is hosting a suspended
> webkit.org page is not in the cache and therefore will not be chosen to host
> other webkit.org pages?
> 
> Why not?

A suspended page processes may get used for navigations if their domain matches but they are not in the WebProcessCache. We check both suspended pages and the WebProcessCache to find a suitable process.
In the WebProcessCache, we currently only put processes that were about to shutdown (i.e. because they have no pages / suspendedPages).

> 
> > Also note that the WebProcess cache is currently not enabled on iOS.
> 
> Yah, I know, and I also know it could be (and even probably will be) some
> day :)

Maybe ^^

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