1134976 - After a browsing session, closing of tabs becomes sluggish

Status: RESOLVED WORKSFORME

(Core :: JavaScript: GC, defect)

Description

[Mayank Bansal]

Attachment: memory-report.json.gz

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0
Build ID: 20150219030204

Steps to reproduce:

after a ~1 hour session, where I open and close ~150 tabs, closing of tabs becomes very sluggish.


Actual results:

There is a noticable pause between clicking the tab close button, and the tab actually closing. The browser is irresponsive during the period. 
In a pure subjective term, the pauses last around 1-1.2 seconds.

Been seeing this for atleast a month.


Expected results:

no delay

The only solution is to restart teh browser.

Comment 1

[Mayank Bansal]

http://people.mozilla.org/~bgirard/cleopatra/#report=0aba5e3b5d09a6b15eac919f7b058abc3cf62e4c&invertCallback=true&selection=%22(total)%22,373

Comment 2

[Mayank Bansal]

Attachment: bCbQKfSQ.zip

Better profile with more sluggishness

Comment 3

[Andrew McCreight [:mccr8]]

It looks like the biggest chunk of time there in the profile in comment 1 is in NukeCrossCompartmentWrappers, which sounds a little like bug 989816, though I think that's about opening tabs and not closing them.  I'm not sure if we have a bug about that for tab closing.

Comment 4

[Mayank Bansal]

cant repro anymore, specially with e10s.