960385 - Thunderbird 24.2 slow with Gmail imap downloading. TB24.1.1 is not slow.

Status: RESOLVED WORKSFORME

(Thunderbird :: Untriaged, defect)

Description

[dsung]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:26.0) Gecko/20100101 Firefox/26.0 (Beta/Release)
Build ID: 20131205075310

Steps to reproduce:

I updated the Thunderbird for my office computers from version 24.1.1 to version 24.2.0.


Actual results:

We find that the Thunderbird goes pretty slow or hang when downloading email from Gmail (with Imap), if people has quite a lot of message then even worse.  Once complete the download then it back to normal.


Expected results:

Today we force all computers downgrade back to version 24.1.1, the things goes fine again.

Comment 1

[dsung]

Hi,

Also find that when the slow down happen in Thunderbird, the CPU loading can reach to 20 - 25%.

B.Rgds

Comment 2

[Wayne Mery (:wsmwk)]

dsung, if you see this problem in the first several hours of having created the account in Thunderbird, then this is related to the initial download and indexing of the messages in that account.

However, 
a) performance should not be terrible
b) There are no changes in TB24.2.0 that should cause this issue http://www.mozilla.org/en-US/thunderbird/24.2.0/releasenotes/buglist.html

I therefore suspect that the problem is in your environment.  Please Start *Windows'* in safe mode with networking enabled
- win7 http://windows.microsoft.com/en-US/windows7/Start-your-computer-in-safe-mode
And still In Windows safe mode, start thunderbird in safe mode
- http://support.mozillamessaging.com/en-US/kb/safe-mode

Does problem go away?

Comment 3

[Wayne Mery (:wsmwk)]

slight correction - the buglist for 24.2.0 is http://www.mozilla.org/en-US/thunderbird/24.2.0/releasenotes/  But still I see nothing that would impact performance

Comment 4

[dsung]

Hi,

That's sounds strange to me, actually this happen for existing users not for the new create accounts.  We have about 100 users running gmail and the problem happen for only 20 - 30%, the problem it just appear suddenly a morning start download the emails, after that it keep happen when download start.  The different between 24.1.1 and 24.2.0 is during download email it will be hang for 24.2, but version 24.1.1 still able to browse the old messages. I would say both version actually has the same scenario but the latest one is even worse.  Here I will give you our additional configuration in user.js for your reference :

user_pref("app.update.auto", false);
user_pref("app.update.enabled", false);
user_pref("extensions.update.enabled", false);
user_pref("extensions.update.autoUpdateDefault", false);
user_pref("mail.identity.default.suppress_signature_separator", true);
user_pref("mail.identity.default.sig_on_fwd", true);
user_pref("mail.identity.default.sig_bottom", false);
user_pref("mail.identity.default.reply_on_top", 1);
user_pref("mailnews.database.global.indexer.enabled", false);
user_pref("browser.helperApps.deleteTempFileOnExit", false);
user_pref("mail.prompt_purge_threshhold", true);
user_pref("mail.purge_threshhold", 2000);
user_pref("mail.server.default.moveOnSpam", true);
user_pref("mail.default_html_action", 2);
user_pref("mail.compose.max_recycled_windows", 0);

I will also try above you mention and let you know how it goes.

B.Rgds
Daniel

Comment 5

[Wayne Mery (:wsmwk)]

dsung,

Please Start *Windows'* in safe mode with networking enabled
- win7 http://windows.microsoft.com/en-US/windows7/Start-your-computer-in-safe-mode
And still In Windows safe mode, start thunderbird in safe mode
- http://support.mozillamessaging.com/en-US/kb/safe-mode

Does problem go away?

Comment 6

[Wayne Mery (:wsmwk)]

Daniel thanks for the great info.  This is a nicely detailed bug report, but unfortunately without your continued feedback we are stalled.

Look forward to your teset results. And also, whether the problem is gone with newer versions


(In reply to dsung from comment #4)
> Hi,
> 
> That's sounds strange to me, actually this happen for existing users not for
> the new create accounts.  We have about 100 users running gmail and the
> problem happen for only 20 - 30%, the problem it just appear suddenly a
> morning start download the emails, after that it keep happen when download
> start.  The different between 24.1.1 and 24.2.0 is during download email it
> will be hang for 24.2, but version 24.1.1 still able to browse the old
> messages. 

Release notes [1] do not list any fixed bugs with regressions reported against them, performance or otherwise. Which makes me think you might have an issue with Antivirus software or a more general TB24 performance issue.

[1] https://www.mozilla.org/en-US/thunderbird/24.2.0/releasenotes/
https://www.mozilla.org/en-US/thunderbird/24.1.0/releasenotes/
https://www.mozilla.org/en-US/thunderbird/24.1.1/releasenotes/

Comment 7

[Wayne Mery (:wsmwk)]

Daniel managned to "figure what's wrong about this issue" but didn't explain how or when