1200173 - Very high cpu usage - 40% at idle even after reset

Status: RESOLVED INCOMPLETE

(Firefox :: Untriaged, defect)

Description

[David Maurand]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:40.0) Gecko/20100101 Firefox/40.0
Build ID: 20150826023504

Steps to reproduce:

Full reset


Actual results:

Nothing


Expected results:

CPU usage should have dropped to what other browsers are using (approx 1 or 2% when idele)

Comment 1

[David Maurand]

Attachment: screenshot of mac activity monitor.

one FF tab open (a story on Salon.com). Chrome the window in focus.

Comment 2

[Loic]

Did you test with HWA disabled?
https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

Comment 3

[Loic]

Sorry, wrong link:
https://support.mozilla.org/en-US/kb/forum-response-disable-hardware-acceleration

Comment 4

[David Maurand]

turning off HWA definitely helped, and ABP on earlier had a strong effect. Now at approx 15% cpu consumption. [i will look for a way to attach a new screenshot.]

the attached is with FF in focus and one tab open.

Comment 5

[David Maurand]

Attachment: Revised screenshot - HWA off, ABP on

Comment 6

[Liviu Cirdei]

User Agent 	Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:47.0) Gecko/20100101 Firefox/47.0
Build ID 	20160126030244

Hi David, 

Are you experiencing the issue on the latest Firefox releases (Firefox 43 / Nightly 47)? I could not reproduce this on Firefox 43 and Nightly 47.

Comment 7

[Liviu Cirdei]

Closing as incomplete due to lack of response from the reporter. Fell free to reopen the bug if you can reproduce the issue on a current build.