User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:2.0b10pre) Gecko/20110121 Firefox/4.0b10pre Build Identifier: 4.0b10pre (2011-01-21) As soon as started the browser takes almost all the CPU. This happens even with Flash plugin disabled. Reproducible: Always Steps to Reproduce: 1. Just start the browser Actual Results: As soon as started the browser takes almost all the CPU.
(In reply to comment #1) > Please try http://support.mozilla.com/en-US/kb/Safe+Mode I've tried it and I can confirm it happens even in safe mode. Please note that I have a great number (66 :-) ) of tabs open.
(In reply to comment #2) > (In reply to comment #1) > > Please try http://support.mozilla.com/en-US/kb/Safe+Mode > > I've tried it and I can confirm it happens even in safe mode. Please note that > I have a great number (66 :-) ) of tabs open. By having just one tab open (the bugzilla page I'm editing) the situation looks really better: the CPU is now below 5-6%. By opening 10 tabs, with 2-3 of them using Flash, CPU usage increased again to 20-30% (and this one is still far more than previous Firefox versions). 10 tabs and no Flash (I only opened tabs with no Flash in them) is below 10-15%.
Do you see high CPU usage also when Firefox is idle? Do you still see this issue with the current version of Firefox?
No, I see very less CPU usage in the last Firefox versions and usually plugin-container is the most "voracious" CPU-eater. But we're talking of less than 30% CPU usage with more than 80 tabs open.
Status: UNCONFIRMED → RESOLVED
Last Resolved: 7 years ago
Resolution: --- → WORKSFORME
You need to log in before you can comment on or make changes to this bug.