This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

ابحث في الدعم

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Thunderbird 102 sporadically high processor use, consumes tons of power on idle. Calendar activity in CalDavSession.jsm

  • 12 ردًا
  • 2 have this problem
  • 1 view
  • آخر ردّ كتبه Wayne Mery

more options

Thunderbird 115.0 (though also happened on 102), M2 macbook pro; OS up to date.

On AC & battery, thunderbird uses up huge amounts of power sporadically in its background activity, taking up ~50-80% of processor power & hundreds of gb virtual memory (see activity monitor screenshot attached). Computer gets pretty hot to touch with thunderbird on, which I don't see with other apps. Troubleshooting info below.

This has been happening for several months now, since I switched to thunderbird & was hoping it would resolve at 115. I can't find any correlation with other usage patterns of the computer (ie I dont think it's correlated with idle usage, but not willing to stage reputation on that).

Thanks so much for any help!


 Application Basics
   Name: Thunderbird
   Version: 115.0
   Build ID: 20230711125218
   Distribution ID:
   Update Channel: release
   User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:115.0) Gecko/20100101 Thunderbird/115.0
   OS: Darwin 22.5.0 Darwin Kernel Version 22.5.0: Thu Jun  8 22:21:34 PDT 2023; root:xnu-8796.121.3~7/RELEASE_ARM64_T8112
   OS Theme:
   Rosetta Translated: false
   Multiprocess Windows: 0/0
   Fission Windows: 0/0
             Enabled by default
   Remote Processes: 0
   Enterprise Policies: Inactive
   Google Location Service Key: Missing
   Google Safebrowsing Key: Missing
   Mozilla Location Service Key: Missing
   Safe Mode: false
   Memory Size (RAM): 8.0 GB
   Disk Space Available: 18.0 GB
 Mail and News Accounts
   account1:
     INCOMING: account1, , (imap) imap.gmail.com:993, 3, OAuth2
     OUTGOING: , smtp.gmail.com:465, 3, OAuth2, true
   account2:
     INCOMING: account2, , (none) Local Folders, 0, passwordCleartext
   account3:
     INCOMING: account3, , (imap) imap.gmail.com:993, 3, OAuth2
     OUTGOING: , smtp.gmail.com:465, 3, OAuth2, true
 Libraries
     Library
     Status
     Expected minimum version
     Version in use
     Path
     RNP (OpenPGP)
     OK
     0.17.0
     0.17.0.MZLA.115.0
     /Applications/Thunderbird.app/Contents/MacOS/librnp.dylib
 Calendar Settings
     Research Presentations
       Name
       Value
       Name:
       Type: caldav
       Disabled:
       Username:
       URI:
       Refresh Interval:
       Read-only: false
       Suppress Alarms:
       Cache Enabled:
       iMIP Identity: id1
       iMIP Disabled:
       iMIP Account:
       Organizer Id:
       Force Email Scheduling:
       Popup Alarms Supported:
       Alarms on Invitation Supported:
       Max Alarms Per Event:
       Attachment Supported:
       Max Categories:
       Privacy State Supported:
       Priority Supported:
       Event Supported: true
       Task Supported: false
       Local Time Supported:
       UTC/GMT Supported:
       Auto-Scheduling Supported: true
     Personal
       Name
       Value
       Name:
       Type: caldav
       Disabled:
       Username:
       URI:
       Refresh Interval:
       Read-only: false
       Suppress Alarms:
       Cache Enabled:
       iMIP Identity: id1
       iMIP Disabled:
       iMIP Account:
       Organizer Id:
       Force Email Scheduling:
       Popup Alarms Supported:
       Alarms on Invitation Supported:
       Max Alarms Per Event:
       Attachment Supported:
       Max Categories:
       Privacy State Supported:
       Priority Supported:
       Event Supported: true
       Task Supported: false
       Local Time Supported:
       UTC/GMT Supported:
       Auto-Scheduling Supported: true
     Deneb Blue
       Name
       Value
       Name:
       Type: caldav
       Disabled:
       Username:
       URI:
       Refresh Interval:
       Read-only: false
       Suppress Alarms:
       Cache Enabled:
       iMIP Identity: id1
       iMIP Disabled:
       iMIP Account:
       Organizer Id:
       Force Email Scheduling:
       Popup Alarms Supported:
       Alarms on Invitation Supported:
       Max Alarms Per Event:
       Attachment Supported:
       Max Categories:
       Privacy State Supported:
       Priority Supported:
       Event Supported: true
       Task Supported: false
       Local Time Supported:
       UTC/GMT Supported:
       Auto-Scheduling Supported: true
     Classes
       Name
       Value
       Name:
       Type: caldav
       Disabled:
       Username:
       URI:
       Refresh Interval:
       Read-only: false
       Suppress Alarms:
       Cache Enabled:
       iMIP Identity: id1
       iMIP Disabled:
       iMIP Account:
       Organizer Id:
       Force Email Scheduling:
       Popup Alarms Supported:
       Alarms on Invitation Supported:
       Max Alarms Per Event:
       Attachment Supported:
       Max Categories:
       Privacy State Supported:
       Priority Supported:
       Event Supported: true
       Task Supported: false
       Local Time Supported:
       UTC/GMT Supported:
       Auto-Scheduling Supported: true
     A1R Confocal
       Name
       Value
       Name:
       Type: caldav
       Disabled:
       Username:
       URI:
       Refresh Interval:
       Read-only: false
       Suppress Alarms:
       Cache Enabled:
       iMIP Identity: id1
       iMIP Disabled:
       iMIP Account:
       Organizer Id:
       Force Email Scheduling:
       Popup Alarms Supported:
       Alarms on Invitation Supported:
       Max Alarms Per Event:
       Attachment Supported:
       Max Categories:
       Privacy State Supported:
       Priority Supported:
       Event Supported: true
       Task Supported: false
       Local Time Supported:
       UTC/GMT Supported:
       Auto-Scheduling Supported: true
   [trimmed]
Thunderbird 115.0 (though also happened on 102), M2 macbook pro; OS up to date. On AC & battery, thunderbird uses up huge amounts of power sporadically in its background activity, taking up ~50-80% of processor power & hundreds of gb virtual memory (see activity monitor screenshot attached). Computer gets pretty hot to touch with thunderbird on, which I don't see with other apps. Troubleshooting info below. This has been happening for several months now, since I switched to thunderbird & was hoping it would resolve at 115. I can't find any correlation with other usage patterns of the computer (ie I dont think it's correlated with idle usage, but not willing to stage reputation on that). Thanks so much for any help! Application Basics Name: Thunderbird Version: 115.0 Build ID: 20230711125218 Distribution ID: Update Channel: release User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:115.0) Gecko/20100101 Thunderbird/115.0 OS: Darwin 22.5.0 Darwin Kernel Version 22.5.0: Thu Jun 8 22:21:34 PDT 2023; root:xnu-8796.121.3~7/RELEASE_ARM64_T8112 OS Theme: Rosetta Translated: false Multiprocess Windows: 0/0 Fission Windows: 0/0 Enabled by default Remote Processes: 0 Enterprise Policies: Inactive Google Location Service Key: Missing Google Safebrowsing Key: Missing Mozilla Location Service Key: Missing Safe Mode: false Memory Size (RAM): 8.0 GB Disk Space Available: 18.0 GB Mail and News Accounts account1: INCOMING: account1, , (imap) imap.gmail.com:993, 3, OAuth2 OUTGOING: , smtp.gmail.com:465, 3, OAuth2, true account2: INCOMING: account2, , (none) Local Folders, 0, passwordCleartext account3: INCOMING: account3, , (imap) imap.gmail.com:993, 3, OAuth2 OUTGOING: , smtp.gmail.com:465, 3, OAuth2, true Libraries Library Status Expected minimum version Version in use Path RNP (OpenPGP) OK 0.17.0 0.17.0.MZLA.115.0 /Applications/Thunderbird.app/Contents/MacOS/librnp.dylib Calendar Settings Research Presentations Name Value Name: Type: caldav Disabled: Username: URI: Refresh Interval: Read-only: false Suppress Alarms: Cache Enabled: iMIP Identity: id1 iMIP Disabled: iMIP Account: Organizer Id: Force Email Scheduling: Popup Alarms Supported: Alarms on Invitation Supported: Max Alarms Per Event: Attachment Supported: Max Categories: Privacy State Supported: Priority Supported: Event Supported: true Task Supported: false Local Time Supported: UTC/GMT Supported: Auto-Scheduling Supported: true Personal Name Value Name: Type: caldav Disabled: Username: URI: Refresh Interval: Read-only: false Suppress Alarms: Cache Enabled: iMIP Identity: id1 iMIP Disabled: iMIP Account: Organizer Id: Force Email Scheduling: Popup Alarms Supported: Alarms on Invitation Supported: Max Alarms Per Event: Attachment Supported: Max Categories: Privacy State Supported: Priority Supported: Event Supported: true Task Supported: false Local Time Supported: UTC/GMT Supported: Auto-Scheduling Supported: true Deneb Blue Name Value Name: Type: caldav Disabled: Username: URI: Refresh Interval: Read-only: false Suppress Alarms: Cache Enabled: iMIP Identity: id1 iMIP Disabled: iMIP Account: Organizer Id: Force Email Scheduling: Popup Alarms Supported: Alarms on Invitation Supported: Max Alarms Per Event: Attachment Supported: Max Categories: Privacy State Supported: Priority Supported: Event Supported: true Task Supported: false Local Time Supported: UTC/GMT Supported: Auto-Scheduling Supported: true Classes Name Value Name: Type: caldav Disabled: Username: URI: Refresh Interval: Read-only: false Suppress Alarms: Cache Enabled: iMIP Identity: id1 iMIP Disabled: iMIP Account: Organizer Id: Force Email Scheduling: Popup Alarms Supported: Alarms on Invitation Supported: Max Alarms Per Event: Attachment Supported: Max Categories: Privacy State Supported: Priority Supported: Event Supported: true Task Supported: false Local Time Supported: UTC/GMT Supported: Auto-Scheduling Supported: true A1R Confocal Name Value Name: Type: caldav Disabled: Username: URI: Refresh Interval: Read-only: false Suppress Alarms: Cache Enabled: iMIP Identity: id1 iMIP Disabled: iMIP Account: Organizer Id: Force Email Scheduling: Popup Alarms Supported: Alarms on Invitation Supported: Max Alarms Per Event: Attachment Supported: Max Categories: Privacy State Supported: Priority Supported: Event Supported: true Task Supported: false Local Time Supported: UTC/GMT Supported: Auto-Scheduling Supported: true [trimmed]
Attached screenshots

Modified by Wayne Mery

All Replies (12)

more options

You haven't posted this somewhere else, correct??

I've seen this two or three times in the past 5 months, also on mac, reported as https://bugzilla.mozilla.org/show_bug.cgi?id=1839256. Though so far unclear it is strictly Mac.

A profile from you using https://support.mozilla.org/en-US/kb/profiling-thunderbird-performance will help

more options

Actually I also posted it on Reddit yesterday, I didn't realize that you also check there too. Summary of my troubleshooting so far was that it does also overheat/occur during troubleshooting mode, and I captured a profile that you can see at:

https://share.firefox.dev/3rpOdS2

Not sure if I'm imagining this, but the problem seems to stop sometimes when I open up Thunderbird. Again, not sure if that's true, but I have a vague feeling that it may happen more as a background process.

Thanks! Shivam

more options

Your issue also reported at https://www.reddit.com/r/Thunderbird/comments/14z04ky/thunderbird_115_insane_power_drawbattery_use/ is not the same as mine.

https://share.firefox.dev/3rpOdS2 points to calendar, with the majority of activity is in caldavsession and gc (memory garbage collection).

more options

I have updated the title to reflect the problem occurs in version 102.

more options

Thank you! Please let me know if there is additional info you need from me, happy to provide as needed. I can also switch to daily builds if there's an update shipped that you think may address this issue.

more options

Do you have any events or tasks that have are recurrring/repeats?

more options

I have some recurring events in the calendar, but they're all ~once per week and uncorrelated with the overheating/processor use. No tasks at all.

more options

Not sure if helpful, but I got a new m2 mac mini and I experienced a similar issue: https://share.firefox.dev/3K7sAMC

(see also CPU usage in attached image)

May be unsurprising because I cloned my macbook pro drive over to the new computer, but adding this just in case it helps at all.

Modified by Shivam Verma

more options

Not sure if helpful, but I got a new m2 mac mini and I experienced a similar issue: https://share.firefox.dev/3K7sAMC

May be unsurprising because I cloned my macbook pro drive over to the new computer, but adding this just in case it helps at all.

more options

Please post your results with 115.3.0 which will ship in several days.

more options

High processor use still occurs, pattern still seems similar: https://share.firefox.dev/3EUgOT2. Processor use hovering around ~125%

more options
Shivam, unfor

Shivam Verma said

High processor use still occurs, pattern still seems similar: https://share.firefox.dev/3EUgOT2. Processor use hovering around ~125%

Unfortunately this profile lacks symbols. If you are still having a problem, please create a new profile. Thanks