reminder: content processes (e10s) are now used by desktop Firefox

Gavin Sharp gavin at
Fri Aug 2 00:46:07 UTC 2013

Seems likely, I recall markh mentioning something similar - adblock
probably doesn't work in the content process.


On Thu, Aug 1, 2013 at 5:38 PM, Jeff Gilbert <jgilbert at> wrote:

> Could this be why I'm starting to see banner ads in some of my newtab-page
> snapshots, despite never seeing them in a tab? I don't appear to see this
> on an old nightly24 snapshot I have lying around.
> -Jeff
> ----- Original Message -----
> From: "Gavin Sharp" <gavin at>
> To: "dev-platform" <dev-platform at>
> Cc: "firefox-dev" <firefox-dev at>
> Sent: Tuesday, July 30, 2013 4:10:34 PM
> Subject: reminder: content processes (e10s) are now used by desktop Firefox
> I've mentioned this at the engineering meeting, but thought it worth a note
> here just to ensure everyone is aware:
> Bug 870100 enabled use of the background thumbnail service in Firefox
> desktop, which uses a <browser remote=true> to do thumbnailing of pages in
> the background.
> That means that desktop Firefox now makes use of E10S content processes.
> They have a short life time (one page load) and are generally triggered by
> opening about:newtab when thumbnails are missing or out of date (>2 days
> old).
> This has exposed some e10s crashes that previously weren't exposed on
> desktop. I've filed to
> track them - please hang any other such crashes off that bug. If you're
> working in a component that has e10s-related crashes, please fix them :)
> (Bug 891218 is also planning to make use of content processes for some
> Social-related functionality. Those remote processes will be longer-lived,
> typically having the same lifetime as the parent process.)
> Gavin
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