User Agent: Mozilla/5.0 (Windows NT 6.1; rv:40.0) Gecko/20100101 Firefox/40.0 Build ID: 20150807085045 Steps to reproduce: I use Firefox and have more than one tab open. I am about to change browsers. This has been happening only since the last Firefox update. Actual results: The program stops responding. When I bring up task manager it shows that Firefox is using between 50 to 100 percent of the CPU and 75+ percent of the memory. Expected results: It should not stop responding and it shouldn't use that much of the system resources.
When the memory use is very huge, could type about:memory in the location bar and save a memory log. Then attach it to the bug report. In addition, are you able to reproduce a similar CPU/memory use with a fresh profile and the same tabs open? Sometimes some add-ons could be the cause of this behaviour.
Thank you for the bug report, Jackie. We need more information to make any progress with this because comment 0 doesn't have steps to reproduce and only vague measurements. Does it happen on particular websites? (In reply to Loic from comment #1) > When the memory use is very huge, could type about:memory in the location > bar and save a memory log. Then attach it to the bug report. Instructions for this are here: https://developer.mozilla.org/en-US/docs/Mozilla/Performance/about:memory > In addition, are you able to reproduce a similar CPU/memory use with a fresh > profile and the same tabs open? Sometimes some add-ons could be the cause of > this behaviour. Similarly, getting info from about:support (click on the "copy text to clipboard" button) and pasting it here would be very helpful.
Summary: Firefox using to many system resources → Firefox using too many system resources
Please reopen if you have more data. Thank you.
Status: UNCONFIRMED → RESOLVED
Last Resolved: 3 years ago
Resolution: --- → INCOMPLETE
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