1819063 - Freezes for several seconds writing mail, possibly related to simultaneous logging into confluence/jira in chrome

Status: UNCONFIRMED

(Thunderbird :: General, defect)

Description

[Luca Edler]

+++ This bug was initially created as a clone of Bug #1750929 +++

Steps to reproduce:

Software I used:
Windows 10 21H1 (64-Bit)
Google Chrome 97.0.4692.71 (64-Bit)
Thunderbird 91.3.0 (32-Bit)

Runtime Analysis file:
https://share.firefox.dev/3qErvme

I don't think, that these steps will lead to reproduce the issue.. but what I did is:

1. opened Thunderbird
2. opened "write new mail" window
3. typed random text
4. opened dev tool (STRG+Shift+I) to start runtime analysis (if it is called that way, in german Thunderbird "Laufzeitanalyse")
5. started 'runtime analysis' recording
6. switched back to "write new mail" window
7. again typed random text, until cursor (and text) freezed
8. freeze for several seconds (about 10 seconds), continued typing random text without seeing it
9. text I typed in the meantime appeared suddenly after freeze

This behaviour appears up to ten times an hour.

Actual results:
UI-Freeze for about ten seconds while writing a mail, so that the written words appeared after the seconds of freeze.

Expected results:
Characters and words appear in realtime while typing.

UPDATE 02/2023:
The issue still exists and I've recorded another performance profile just a few minutes ago.
The error pattern looks still like "I write a mail, I'm typing words. Suddenly no more words are appearing as I'm still typing. This lasts for about 10 seconds and suddenly the typed words appear all at once."
Thunderbird is on version 102.4.

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

I had a quick look by myself into the performance profile and it looks like the "morkParser" takes about 100% of the CPU load for about 10 seconds which blocks everything else and feels like a freeze.

Can anyone confirm this? The question might be, why the morkParser 'is' taking all the load?

Comment 1

[Wayne Mery (:wsmwk)]

Morkparser is the message index for the folder, which drives disk IO.
How much memory is shown for Thunderbird in the "working set" column of taskmgr?
Try Windows started in safe mode?
Are you still using ...
Intel NUC
CPU: Core i3-5010U CPU @ 2.10GHz
Ram: 8GB
Graphics: Intel® HD-Grafik 5500, shared vram

Comment 2

[Luca Edler]

Bug 1819192 indeed sounds very similar. I'm still using the same system. The disk is a Samsung EVO 850 250gb SSD so disk speed should not be the bottleneck.
When I "force" open all the tools usually used, 5.8GB/8GB are used. Not that little but also not that much. Maybe in production it goes up to 7Gb?
All Thunderbird processes together use about 830 MB.

Comment 3

[Luca Edler]

Attachment: system-memory total and used

Comment 4

[Luca Edler]

Attachment: task manager, thunderbird processes, memory used

Comment 5

[Kai Engert (:KaiE:)]

Why is this assigned to the S/MIME security component?
It seems unrelated to that.

Comment 6

[Luca Edler]

Hi Kai,
when I created the original bugticket I assumed, the cause would be something related to s/mime encrypted mail, cause most mails I write are encrypted. But in the meantime I saw that the issue appears too when I write unencrypted mails.

Comment 7

[Wayne Mery (:wsmwk)]

luca, can you do a new profile with version 115?
Instructions https://support.mozilla.org/en-US/kb/profiling-thunderbird-performance