684580 - GUI becomes (periodically) unresponsive during background mail downloading (IMAP)

Status: RESOLVED INVALID

(Thunderbird :: General, defect)

Description

[Davor]

User Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C)

Steps to reproduce:

Simply downloading mails.


Actual results:

The GUI is very unresponsive for periods of 1~2seconds. It's as if the GUI and mail downloading happens in the same thread. Quite annoying.



Expected results:

The GUI should be responsive.

Comment 1

[Davor]

Apparently this is because of MSE running in the background and checking the mails while they are downloaded.

Still, I don't understand why the GUI blocks.

Comment 2

[Wayne Mery (:wsmwk)]

be(In reply to Davor from comment #1)
> Apparently this is because of MSE running in the background and checking the mails while they are downloaded.

because activity in MSE blocks the entire thunderbird

Comment 3

[Davor]

Ok, I agree that MSE is the cause, but I do not agree that it is also the problem. MSE, like any other antivirus software, is just doing it’s job. 

I still think that the problem is with Thunderbird and the way the GUI interacts with the downloading and file-accessing threads. These interactions could be optimized so that the GUI does not freeze if access to a file is delayed.