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Thunderbird 60.6.1 high CPU usage on Ubuntu 19.04 with "indexing messages" in Activity Manager

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After some time running, Thunderbird is constantly using between 40 and 60% of the CPU. I have to close and restart Thunderbird for the CPU usage to drop in the single digit, but after a while (hours), it get back to the 60%.

Strangely enough, this CPU usage does not appear in the system monitor but only in the terminal running "top"

After some time running, Thunderbird is constantly using between 40 and 60% of the CPU. I have to close and restart Thunderbird for the CPU usage to drop in the single digit, but after a while (hours), it get back to the 60%. Strangely enough, this CPU usage does not appear in the system monitor but only in the terminal running "top"

Modified by Wayne Mery

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Wayne Mery
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Can you be more precise about "after some time runnning"? Is this a couple hours, a day, several days?

Junk and Trash folders are empty?

Is filter logging disabled at Tools > Filters?

What happens after Help | restart with addons disabled?

Can you be more precise about "after some time runnning"? Is this a couple hours, a day, several days? Junk and Trash folders are empty? Is filter logging disabled at Tools > Filters? What happens after Help | restart with addons disabled?
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Question owner

Sorry for the delay, I tried to diagnosed the different possibilities. Some time = a couple of hours. Junk/trash does not affect the problem. Filter does not affect the problem.

I am running the followings addons: Lightning (who doesn't) Messaging Menu and Unity Launcher integration Provider for Google Calendar 4.4.2 Send later (no effect)

It is possible that the Google calendar addons has some influence, not the others. I also noticed that I have a lot of "server timeout" in the activity manager. When Thunderbird is trying to connect to the faulty server, the CPU activity runs high.

Hope this helps.

Sorry for the delay, I tried to diagnosed the different possibilities. Some time = a couple of hours. Junk/trash does not affect the problem. Filter does not affect the problem. I am running the followings addons: Lightning (who doesn't) Messaging Menu and Unity Launcher integration Provider for Google Calendar 4.4.2 Send later (no effect) It is possible that the Google calendar addons has some influence, not the others. I also noticed that I have a lot of "server timeout" in the activity manager. When Thunderbird is trying to connect to the faulty server, the CPU activity runs high. Hope this helps.
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Wayne Mery
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You didn't actually answer the question of whether Is filter logging disabled. :)

You should try for several hours with calendar disabled.

If there is still a problem, then try the performance profiler: 1. install profiler add-on into thunderbird from https://github.com/firefox-devtools/Gecko-Profiler-Addon/blob/master/gecko_profiler.xpi?raw=true

2. The follow instructions at https://profiler.firefox.com/ (videos BASED ON FIREFOX at https://profiler.firefox.com/docs/#/./videos-intro )

You must be using 67.0b3 or current nightly build.

You didn't actually answer the question of whether Is filter logging disabled. :) You should try for several hours with calendar disabled. If there is still a problem, then try the performance profiler: 1. install profiler add-on into thunderbird from https://github.com/firefox-devtools/Gecko-Profiler-Addon/blob/master/gecko_profiler.xpi?raw=true 2. The follow instructions at https://profiler.firefox.com/ (videos BASED ON FIREFOX at https://profiler.firefox.com/docs/#/./videos-intro ) You must be using 67.0b3 or current nightly build.

Modified by Wayne Mery

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Question owner

I finally found what is causing the large CPU usage. In the activity manager, there is an "indexing messages" bar running forever: Determining which message to index in inbox.

Please let me know if there is a way to fix this.

Thanks, Pierre

I finally found what is causing the large CPU usage. In the activity manager, there is an "indexing messages" bar running forever: Determining which message to index in inbox. Please let me know if there is a way to fix this. Thanks, Pierre
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Wayne Mery
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Thanks for finding that this is related to indexing messages.

Can you run the profiler?

Thanks for finding that this is related to indexing messages. Can you run the profiler?
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Question owner

Will do, but I am traveling this week. Definitely later though.

Will do, but I am traveling this week. Definitely later though.
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