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)
Created attachment 8654817 [details] screenshot of mac activity monitor. one FF tab open (a story on Salon.com). Chrome the window in focus.
Did you test with HWA disabled? https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles
Sorry, wrong link: https://support.mozilla.org/en-US/kb/forum-response-disable-hardware-acceleration
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.
OS: Unspecified → Mac OS X
Hardware: Unspecified → x86_64
Summary: Very high cpu usage - 40% at idle even after reset (v40.0.3 on Mac) → Very high cpu usage - 40% at idle even after reset
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.
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.
Status: UNCONFIRMED → RESOLVED
Last Resolved: 3 years ago
Resolution: --- → INCOMPLETE
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