1512379 - Thunderbird freezes when using network calendars

Status: RESOLVED DUPLICATE of bug 1502923

(Calendar :: General, defect)

Description

[igordashaar]

User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:63.0) Gecko/20100101 Firefox/63.0

Steps to reproduce:

-Update to Thunderbird 60 (currently 60.3.2 32bit) 
-with Lightning enabled and 
-using several network calendars (hosted on a nextcloud instance within the same network)
-do some stuff in thunderbird (e.g. change tabs, select task, select mail, select calendar)




Actual results:

Thunderbird freezes for several (ca. 1-10) seconds (it does not react to any user actions) consuming 25% CPU on a 4 Core CPU System. This happens roughly ever few minutes.
When disabling Lightning (or disabling network calendars) this does not happen.


Expected results:

Thunderbird should be running smooth (as it did in Versions <TB60).

Comment 1

[Wayne Mery (:wsmwk)]

https://mzl.la/2Pnjuwd lists several performance issues reported in past year

Comment 2

[igordashaar]

Yes, similar reports are already there. Thank you!

Comment 3

[Arthur K. (he/him)]

(In reply to igordashaar from comment #2)

Yes, similar reports are already there. Thank you!

Any improvement if you update to TB 60.7.0?

Comment 4

[igordashaar]

Improvement yes.
With calendars enabled I still get a freeze when starting Thunderbird. But the after it started I could not provoke any freezes. When disabling the network calendars I can start Thunderbird and as soon as the GUI is loaded I can use it without any noteable freeze.

Comment 5

[Arthur K. (he/him)]

(In reply to igordashaar from comment #4)

Improvement yes.
With calendars enabled I still get a freeze when starting Thunderbird. But the after it started I could not provoke any freezes. When disabling the network calendars I can start Thunderbird and as soon as the GUI is loaded I can use it without any noteable freeze.

I've seen some message regarding network calendars that no longer exist that could cause slow startups. Are all the calendars that you have valid at their sources still? Meaning, do they actually exist still at their network locations?

I suspect you'll likely see improvement with the forthcoming 68.0 release but it's still a few weeks away. And you're on 32-bit TB right, not 64-bit TB? Nothing in the release notes of 60.7.1 or 60.7.2 jumped out at me regarding this specific issue so I imagine you've already updated and still see the same behavior. Just curious if you're on Win 10 1903 already?

Comment 6

[igordashaar]

All calendars are available and i have read and write permissions to them.
I'm running Win10 1809 64bit with TB 32bit (60.7.2) and still having some freezes shortly after TB startup. Would you expect it getting better with new Win10 build?

Comment 7

[Arthur K. (he/him)]

(In reply to igordashaar from comment #6)

All calendars are available and i have read and write permissions to them.
I'm running Win10 1809 64bit with TB 32bit (60.7.2) and still having some freezes shortly after TB startup. Would you expect it getting better with new Win10 build?

It's possible the newer TB will remedy this. Although Win 10 1903 is a bit more performant, I don't think 1903 will solve this issue. There was another user in bug 1509739 comment 4 having a similar sort of issue that fixed his problem by creating a new profile and migrating data over to the new profile. I don't suppose you'd want to try that and see if it helps or fixes your issue?

Comment 8

[Richard Leger]

This bug seems duplicate of Bug 1502923...

Comment 9

[Wayne Mery (:wsmwk)]

Reporter, if you disagree that this is fixed, please update the bug report.