1130443 - [e10s] severe CPU usage in nsLayoutUtils::PaintFrame | nsDisplayList::PaintRoot

Status: RESOLVED INCOMPLETE

(Core :: Layout, defect)

Description

[Wayne Mery (:wsmwk)]

2015-02-05 build
about 100 tabs, had been performing well, then something went bad for 100% CPU usage.
Then all tabs crashed, and cpu still at ~100%

profile taken with all tabs crashed except an addons manager tab
http://people.mozilla.org/~bgirard/cleopatra/#report=596e6baa7c746ebf4fe9c47103fa4362434628ce

Comment 1

[Wayne Mery (:wsmwk)]

most CPU is in  nsLayoutUtils::PaintFrame via nsDisplayList::PaintRoot

e10s is enabled for all ~120 tabs

Comment 2

[Wayne Mery (:wsmwk)]

FWIW, bug 1123439 may have been the cause of all tabs crashing

Comment 3

[Mike Conley (:mconley) (:⚙️)]

From the profile, that big chunk of activity in the middle seems to be from an add-on, "Greasefire2".

The rest of the painting... less sure. I'll get this put into the triage backlog.

Comment 4

[Wayne Mery (:wsmwk)]

https://addons.mozilla.org/en-us/firefox/addon/greasefire/
"When you visit a web page that has compatible user scripts on Userscripts.org, this extension will highlight the Greasemonkey/Scriptish icon in the [Firefox] toolbar button "

Comment 5

[Mike Conley (:mconley) (:⚙️)]

Hey wsmwk - can you try to reproduce with the Greasefire add-on disabled?

Comment 6

[Wayne Mery (:wsmwk)]

(In reply to Mike Conley (:mconley) - Needinfo me! from comment #5)
> Hey wsmwk - can you try to reproduce with the Greasefire add-on disabled?

I'll check if I still have URLs documented that helped me reproduce bug 1123439. Otherwise, it's random when it gets overloaded to the point of crashing tabs.

I'll state more explicitly, it seems odd that with all the tabs crashed, that Firefox would be any CPU at all.

Comment 7

[Wayne Mery (:wsmwk)]

LMK if I should keep everything in current state for further testing.   Because if not, I'll install an updated version of greasemonkey https://arantius.com/misc/gm-nightly/ mentioned in bug 1048164

Comment 8

[Mike Conley (:mconley) (:⚙️)]

The more up-to-date version of Greasemonkey is probably a good bet. Let's roll with that.

Comment 9

[Wayne Mery (:wsmwk)]

(Untested) Assuming Greasemonkey and Greasefire are involved and nothing else (unclear, as I have many addons installed), here be potential steps
1. Firefox nightly with e10s enabled
2. install https://addons.mozilla.org/en-us/firefox/addon/greasemonkey/ version 2.3 and https://addons.mozilla.org/en-us/firefox/addon/greasefire/
3. load up Firefox with ~100 tabs (in my case almost all bugzilla.mozilla.org links)
4. use a crash link [1] to cause all tabs to crash
Results: High CPU


[1] Crash links
https://www.google.com/search?q=msonsext.dll&ie=utf-8&oe=utf-8
http://www.freefixer.com/library/file/MSONSEXT.DLL-53073/
http://www.experts-exchange.com/Software/Office_Productivity/Q_24752755.html
http://answers.microsoft.com/en-us/windows/forum/windows_7-performance/windows-explorer-crashes-probably-connected-with/6708c663-a7fe-4c83-b505-3df654a659cf
http://www.symantec.com/security_response/writeup.jsp?docid=2014-112415-0402-99&tabid=2  (no flash)
https://forum.manjaro.org/index.php?topic=15913.0 no flash
http://www.emaildiscussions.com/showthread.php?t=66617 no flash

Comment 10

[Wayne Mery (:wsmwk)]

I haven't tested it yet, but bug 1048164 comment 42 indicates there is a "compatible" version available.

Comment 11

[Tracy Walker [:tracy]]

Wayne,  have you a chance to try with the latest version of Greasemonkey?

Comment 12

[Wayne Mery (:wsmwk)]

It may be some time before I reenable it. So I'll reopen if I reeneable and see it again