1774398 - Thunderbird 91.10.0 uses all available cpu with failed BitDefender VPN tunnel (networking)

Status: RESOLVED INVALID

(Thunderbird :: General, defect)

Description

[Ben klein]

Attachment: Windows 10 task manager report once Thunderbird was started

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.115 Safari/537.36

Steps to reproduce:

The software was updated to 91.10.0 around June 6

Actual results:

CPU performance dropped. Checked Task Manager. Thunderbird is using all available CPU. Task Manager showed CPU usage before Thunderbird was started at 33%. Once Thunderbird was started CPU usage went up to 100% (file included)

Expected results:

No major change in performance once the new version was installed.

Comment 1

[Wayne Mery (:wsmwk)]

I don't see anything that changed in 91.10.0 that would explain your issue. Please have a look at https://wiki.mozilla.org/Thunderbird:Testing:Memory_Usage_Problems

Comment 2

[jmellie]

Attachment: Keeping Thunderbird open consumes available CPU.

I have the same problem.

Comment 3

[Ben klein]

I have checked into Memory usage problems. No change occurred.
Info re size of Thunderbirds files

From windows explorer:
Thunderbird Indox Properties: 113MB, 55 files, 8 Folders
Thunderbrd Mail Properties: 2.25GB 696 Files, 157 Folders

Task Manager: Thunderbird(5) CPU at 100% TB 64.5%, Memory at 70% TB 876.7MB, Disk at 8% TB 0.1 MB/s Network 0%, Power usage TB Very High, Power usage trend TB High

Comment 4

[Ben klein]

The issue is resolved. The problem was caused by BitDefender VPN. Once I tunneled through it ThunderBird worked fine.

Comment 5

[Wayne Mery (:wsmwk)]

Thanks for the update