Closed Bug 771444 Opened 8 years ago Closed 2 months ago

janky tab strip performance meta-meta bug


(Firefox :: Tabbed Browser, defect)

Not set





(Reporter: theod.moz, Unassigned)


(Depends on 2 open bugs)


(Keywords: meta, perf, Whiteboard: [Snappy:p1])

User Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:13.0) Gecko/20100101 Firefox/13.0.1
Build ID: 20120614114901

Steps to reproduce:

Using Firefox on Windows 8.
Switching between tabs, closing tab(s), new tab, etc. 
Between 4 and 12 tabs.

Actual results:

Response to the command by Firefox (closing the tab, switching to next tab, etc. ..) is super-slow. One second at least, can be more.

Expected results:

Instant execution of the action... 

Seems that the issue mainly happens when the Win8 task manager shows 70% or more of OS RAM as used (<= 30%).

BUT the slownessis not (directly, at least) related to the OS lack of memory: All the other applications are not slow AT ALL and I have to other browsers with between 4 and 30 tabs where I can do anything (create new tabs, close, etc. ... ) without any slow down.

Maybe Firefox is swapping too often when free OS memory is under < 30%? Maybe Firefox uses memory a way Win8 does like...?

I'd by happy to provide more detailed info, just tell me how.
Whiteboard: [Snappy]
Component: Untriaged → Tabbed Browser
Lets use this as a tracking bug for janky tab strip performance.
Depends on: australis-tabs-win
Whiteboard: [Snappy] → [Snappy:p1]
(In reply to Taras Glek (:taras) from comment #1)
> Lets use this as a tracking bug for janky tab strip performance.

I don't exactly know what it means but I guess it's a good idea :)
Depends on: 752496
Depends on: 752486
Depends on: 752376
Depends on: 716108
OS: Windows 8 → All
Hardware: x86_64 → All
Depends on: 649216
Ever confirmed: true
Keywords: meta
Depends on: tabswitch, 593680, 792922
No longer depends on: 649216, australis-tabs-win, 752376, 716108, 752486, 752496
Keywords: perf
Summary: Tabs-related actions in Firefox are incredibly long → janky tab strip performance meta-meta bug
Version: 13 Branch → Trunk
Closed: 2 months ago
Resolution: --- → INCOMPLETE
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