1596592 - Warm the tab that's being switched to early during tab removal

Status: RESOLVED FIXED

(Firefox :: Tabbed Browser, enhancement, P3)

Description

[Alex Thayer [:alexical] (she/her)]

Tab switch can be expensive if a page has a beforeunload handler. We should start warming up the next tab to be shown early in the process of tab removal to compensate for this.

Comment 1

[Alex Thayer [:alexical] (she/her)]

Attachment: Bug 1596592 - Warm tab being switched to early during tab removal r?mconley

Tab switch can be expensive if a page has a beforeunload handler. We should
start warming up the next tab to be shown early in the process of tab removal
to compensate for this. We could only do this if we know we have a
beforeUnload handler, but there shouldn't be any negative side effects of
getting started on the tab switch early regardless.

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

There's a r+ patch which didn't land and no activity in this bug for 2 weeks.
:dthayer, could you have a look please?
For more information, please visit auto_nag documentation.

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/6906316c6dd3
Warm tab being switched to early during tab removal r=mconley,dao

Comment 4

[Alexandru Michis [:malexandru]]

https://hg.mozilla.org/mozilla-central/rev/6906316c6dd3

Comment 5

[Hsin-Yi Tsai (she/her) | away [:hsinyi]]

The bug was closed 5 years old and doesn't seem to require any action, so clearing needinfo.