High Processor Usage with Thunderbird Window Closed (Mac)
This is a continuation of a problem I reported earlier... https://support.mozilla.org/en-US/questions/1442170
Updating to version 115.9 did not solve the problem. Today I updated to 115.10.1 and the problem persists. Thunderbird is also recommending that I update to version 116, but I don't even see that listed on the Mozilla web page for the change logs.
Thunderbird 115.10.1, Mac OS 10.13.6, iMac 20-in Early 2008 model.
I can open Thunderbird and check mail in multiple accounts. If I close the Thunderbird window (but leave the app running), CPU usage will eventually jump up to more than 100%. It does not happen right away, but could take 10 minutes or so. Currently it is at 115% processor usage. If I open the Thunderbird window again, the processor usage drops to under 8%, then drops again to below 0.4%.
All Replies (5)
If you were on a current version of MacOS I'd suggest updating to Thunderbird 128.
That is not an option for you, see I suggest looking at https://wiki.mozilla.org/Thunderbird:Testing:Memory_Usage_Problems
I don't recall any problems with memory-use getting out of control... just the processor usage going rampant. It never gets to 200% so there is still some available CPU power from my Core2 Duo and things don't necessarily feel slow until I try doing something more intensive.
Right now, Thunderbird 115.10.1 is using 492MB RAM and 0.0% CPU (though goes to 3.3% when checking for new messages). With all my other apps running, total memory pressure is 31%. I will do another test by closing the window and waiting for CPU usage to go wild and then I will check RAM usage and report back.
What is the word on version 116?
Thunderbird has gone out of control again. CPU usage is 113%, memory was up to 612MB when I noticed, and has climbed up to 682MB after another 10 minutes or so. Now it is 713MB. Memory pressure is still around 30-31%. I guess I will have to look deeper into this problem on Monday when I return to work.
Perhaps instead of second guessing the expert that advised you about what is, or is not, a memory problem you should utilize the information and undertake the steps the Wiki suggests.
John Gilbert said
What is the word on version 116?
Both Firefox and Thunderbird 116.0 and later versions requires macOS 10.15 (ten.fifteen) or later to run.
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