790207 - Scrolling about:memory?verbose in a separate dialog is slow

Status: RESOLVED WORKSFORME

(Core :: Graphics, defect)

Description

[Florian Quèze [:florian]]

Scrolling about:memory?verbose is fast in a Firefox tab, but very slow in a separate dialog.

Steps to reproduce:
- Open the Error Console
- Execute: openDialog("about:memory?verbose")
- Scroll and notice that it isn't smooth.

Expected result:
- Scrolling about:memory?verbose in a separate dialog shouldn't be slower than in a content tab.

Here is a profile made on a current Firefox nightly:
http://people.mozilla.com/~bgirard/cleopatra/?report=a1c6698fb79b04762601552a757ec62855f3708f

Similar profile made on a local Thunderbird trunk build with --enable-profiling:
http://people.mozilla.com/~bgirard/cleopatra/?report=26b9139025e8f13bdad7f483b8845ab65870c655

Not sure if I'm filing this in the right component, so please move it if it's wrong. I wouldn't be surprised if this was Mac-only, but I'm not sure either.

Also not sure if this is only with about:memory, or if this is a more general problem that actual users are likely to encounter.

Comment 1

[Gregory Pappas [:gregp]]

Florian, are you still experiencing this issue?

Comment 2

[Florian Quèze [:florian]]

(In reply to Gregory Pappas [:gregp] from comment #1)

Florian, are you still experiencing this issue?

Here's a profile on a current local build: https://share.firefox.dev/3KuiBlt

Nothing seems particularly slow, but I probably also have a much faster machine now.

Closing as I don't see anything actionable.