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Firefox freezes with 100% cpu utilization on amazon.de (not on amazon.com) Version-Release number of selected component (if applicable): firefox-44.0-3.fc23.x86_64 flash-plugin-11.2.202.559-release.x86_64 How reproducible: open firefox, goto amzon.de in the search bar enter something, e.g. motor After starting the search, results will be shown and firefox freezes with 100% on one cpu. The same freeze will happen if i start firefox in safe mode. I have that since i updated from fc22 to fc23 some weeks ago, hoped this will be fixed by updates. Memory usage increases while firefox is freezed (this was in safe mode): PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 16032 ad 20 0 1425692 528304 93852 R 100.3 8.8 2:58.49 firefox 16032 ad 20 0 1469724 573328 93852 R 100.3 9.6 3:38.56 firefox 16032 ad 20 0 1572124 674828 93852 R 100.0 11.3 4:56.92 firefox 16032 ad 20 0 1779996 853572 93852 R 100.0 14.2 7:34.97 firefox 16032 ad 20 0 1918236 989.9m 93852 R 100.0 16.9 9:56.14 firefox
Can you please try that in safe mode? ($firefox -safe-mode).
Ahh, I see you already test it in safe mode.
Can you please attach a backtrace of the freeze? How-to is here: http://fedoraproject.org/wiki/Debugging_guidelines_for_Mozilla_products#Application_freeze Thanks!
seems to be there is no debuginfo package for firefox available. All other debuginfo packages installed just fine. Tried to delete dnf/yum cache, no difference: [ad@localhost ~]# sudo debuginfo-install firefox ... Could not find debuginfo for main pkg: firefox-44.0-3.fc23.x86_64 however, i attached the backtrace with the other debuginfo-packages installed (in case that may help without the firefox symbols)
Created attachment 1121301 [details] backtrace w/o firefox sysmbols package
Looks like it freezes in reflow (layout engine) but there's no reason for that. There may an html element which may cause the troubles but I'm unable to reproduce...do you say you just enter amazon.de and it freezes? btw. could you try to create a new profile ($firefox -ProfileManager -no-remote) and test?
Hi Martin, i can access amazon.de just fine. I have to enter something into the search input box at the upper left, e.g. Motor and start the search. This results in the reported freeze. I have created a new profile and tried it with this profile. It works, firefox does not freeze. Thanks for that, i can now get rid of chrome. I have used the default profile for some time, the oldest file in the profile directory is from year 2009, it may even be created before that since i always retained my home directory on fedora or hardware updates. Any hint how to find what causes firefox to freeze ?
I guess it may be related to some search history in your old profile - maybe parsing it takes so long. see https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data#w_what-information-is-stored-in-my-profile for details.