(In reply to David von Oheimb from comment #39) > Thanks Wayne for bringing attention back also to this bug. > > I can confirm that the bug still exists with the latest released TB version > 31.3.0 with a cpu usage increase of about 12-13% on my Macbook Air.... > > I suspect that this waste of CPU (and battery on mobile devices!) is due to > the same careless chunk of code performing a busy loop somewhere deep in > Mozilla's TCP client connect implementation.
David, can you do a performance profile during a period of high CPU using the procedure at https://developer.mozilla.org/en- US/docs/Tools/Remote_Debugging/Thunderbird which uses Firefox as the recorder - follow instructions at https://developer.mozilla.org/en-US/docs/Tools/Remote_Debugging/Thunderbird - after connect, pick "main" - click "Performance" in the developer tool menu - click "start recording performance" in the center - do some actions in thunderbird which cause the problem or behavior to be recorded - click "stop recording performance" in the center - click "Save" one the left - email the json file or attach to this bug report -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to thunderbird in Ubuntu. https://bugs.launchpad.net/bugs/109943 Title: Thunderbird: high CPU usage from progress bars Status in Mozilla Thunderbird: Confirmed Status in thunderbird package in Ubuntu: Confirmed Bug description: Binary package hint: mozilla-thunderbird When sending a simple and short email with Thunderbird via SMTP the CPU is used intensively. This seems not to be necessary. If the sending failed and an corresponding error message dialog appears, the CPU is still being used. When pressing ok to close the error dialog the CPU is fine. This suggests it might be related specifically to the progress bar. Such behavior is especially annoying on a laptop where you can hear the CPU usage because of a starting fan. To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/109943/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
