1058859 - [e10s] general sluggishness to keyboard/mouse events

Status: RESOLVED WORKSFORME

(Firefox :: General, defect)

Description

[Chris AtLee [:catlee]]

The browser seems sluggish to respond to keyboard/mouse events with e10s enabled.

For example, I often use keyboard shortcuts on feedly to navigate between stories. Normally this is practically instantaneous, but with e10s there's about a 0.5-1s lag between hitting 'j' and having the next story show up.

Typing in text areas seems a bit sluggish as well.

Mouse scrolling sometimes seems slow to start for the first time on any given page.

Comment 1

[Achwaq Khalid]

Confirmed on windows 8.1 64bit

Comment 3

[Chris Peterson [:cpeterson]]

In the August 7 e10s meeting, I mentioned that e10s had become more sluggish over the proceeding week. No one else had noticed any problems, but I still see this problem.

For example, when I press the ⌘N keyboard shortcut to open a new window, Nightly hangs for at least one second before the window opening animation even begins.

I don't know if this is related to bug 1037179 where session restore takes 2x longer with e10s. It's so bad that I reverted my "browser.sessionstore.restore_on_demand = false" pref to the default value true.

I'm running OS X 10.9.4.

Comment 4

[znmeb]

I'm diving in here - see https://bugzilla.mozilla.org/show_bug.cgi?id=1071411#c4 -

Comment 5

[Chris AtLee [:catlee]]

keyboard navigation in feedly is much snappier in today's nightly.

Comment 6

[Wayne Mery (:wsmwk)]

(In reply to Chris AtLee [:catlee] from comment #5)
> keyboard navigation in feedly is much snappier in today's nightly.

so WFM?