Ubuntu – Why is Thunderbird pegging a core at 100%

12.0464-bitcpu loadthunderbird

I have experienced 2-3 unexplained lockup over last 10 days.

Today, I had a random lockup (no mouse, keyboard response, 100% CPU). But, when I finally switched (Ctrl-Alt-F1) to command line (it took several minutes) it told me that thunderbird-bin had locked a CPU.

I ran this to resolve:

pidof thunderbird-bin
sudo kill ####

However, after saving other work, I tried restarting Thunderbird. It went to 90%+ CPU, and within 20 seconds it locked again.

Once I have more detail I will raise a bug (on Ubuntu Forums).

Does anyone have any other suggestions, advice?

UPDATE: (Sep-2012)

Thunderbird 13.0.1 is quite stable in safe mode. Still working to resolve ..


UPDATE 2: (Jan-2013)

Now running Thunderbird 17.0.2 (Ubuntu 12.04).

Still have ALL Plugins disabled. Works well, and does everything I need.

Not attempting to resolve.

Best Answer

Change the configuration key

mail.db.idle_limit

to

30000000

In Preferences->Advanced->General->Config-editor

Source: http://rainbow.chard.org/2013/02/19/thunderbird-high-cpu/

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