Created attachment 584128 [details] Sample of Firefox 2011-12-23-10-56-13.txt.zip User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:9.0) Gecko/20100101 Firefox/9.0 Build ID: 20111212185108 Steps to reproduce: Firefox 9 beta was running for about two days, with many windows and tabs open. This is my normal usage. Actual results: Firefox was hung and my system was sluggish. I looked at Activity Monitor and Firefox had 268 thread (actually it flipped back and forth between 268 and 267 threads). CPU was pegged at 100%. I used Activity Monitor to sample the CPU (attached) and killed Firefox. It has now been running for a few hours and is normal. After I file this I'll restart with the update that just arrived. Expected results: Should have been able to use UI, threads should have been about 26 or so (normal), CPU should have been less than 30% (normal for idle is under 10%).
Reporter, do you still see this problem when using a current version in safe mode? http://support.mozilla.org/kb/troubleshoot-firefox-issues-using-safe-mode If you no longer see the problem, please set status to resolved and resolution to WORKSFORME. If you do see the problem, please update comments on how to reproduce.
Whiteboard: [closeme 2014-02-01]
I no longer see the problem. Resolved. Thanks.
Status: UNCONFIRMED → RESOLVED
Last Resolved: 5 years ago
Resolution: --- → WORKSFORME
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