I have already tested that. * Only throbber: ~15-20% CPU usage * Only progress bar: ~15-20% CPU usage * Both throbber and progress bar: ~15-20% CPU usage * Both disabled: no CPU usage
@Gunter: I measured CPU usage on Linux with `htop`, where the percentage is always relative to 1 core. 15% means 15% of 1 core. Using full 2 cores would show up as 200%. > 100% of one CPU normally doesn't indicate that something is amiss: The CPU could be asleep 99% of the time and be busy 1% of the remaining time. I don't understand this sentence. If the CPU is asleep 99% of the time, CPU usage in `htop` should show up as roughly 1%, not 100%. -- 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 : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp