272925 - Thunderbird is extremely slow under windows XP, taking 4 seconds processor time to open a newly arrived message (2.8GHz, 512 Mb RAM)

Status: RESOLVED WORKSFORME

(Thunderbird :: General, defect)

Description

[Igor Khmelinskii]

User-Agent:       Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0
Build Identifier: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0

The problem appears when I send a message, try to open a newly arrived message,
move a message to another folder, etc. The problem was there with Thunderbird
0.9 (English) and stays there with Thunderbird 1.0 preview.
On the other computer (the one I'm writing from) under Windows 98 (600MHz, 128
Mb RAM) it works fine. 

Reproducible: Always
Steps to Reproduce:
1. It is just to try to open a newly arrived (unread) message -- this takes 4
seconds on a 2.8 GHz computer under Windows XP 
2. ...
3.

Actual Results:  
It does work, but VERY slowly, much slower than is does under Windows 98 and on
a slow computer

Expected Results:  
Should open a message / move a message to another folder / fisnish sending the
message -- working much faster, in real time and not in permanent slow motion

Comment 1

[Adam Becevello]

WFM: Thunderbird version 1.0RC1 (20041201)

I have never known Mozilla Thunderbird to be really slow to open messages.

I'm wondering, do you use POP3 or IMAP for your email?  I use IMAP and there is
a delay before things take place which is normal.

As well, if you are using POP3 the size of your mailbox could become a factor if
it is very large.

Comment 2

[WADA:World Anti-bad-Duping Agency]

What anti-virus software do you use?
Same software/same version on 98 and XP?
What is your anti-virus software settings?
Do you use mail scanning function of anti-virus software?

Since Mozilla's mail box file is Unix Mbox format, many mails are kept in a
file, and a mail data is appended to the file when a mail arrived.
However, anti-virus software's checking mechanism is file based, then anti-virus
software reads and checks entire mbox file when the mail box file is updated.
This can cause your problem.
Please note that Mozilla/Thunderbird's mail box file has no file extention.
This means regitration to white list using extention is impossible.
Registration should be done by specifiyng mail directry.

Comment 3

[Adam Becevello]

You coudl also try compacting the mail files (File -> Compact Folders) to remove
all the messages that you've deleted in the past.

Comment 4

[Igor Khmelinskii]

I have got it sorted out -- the problem was in the Panda Antivirus, which was
monitoiring the file read/write activity, and looking at ALL THE FILES.

The delays disappeared as soon as I limited the file extensions to be checked.

Previously, I had tried to compact mailboxes, delete extra mails etc, which
solved nothing.

--Igor

Comment 5

[Adam Becevello]

If you can't specify a patch that fixed this bug, it should be resolved as
WORKSFORME.   Reopening to fix this.

Comment 6

[Adam Becevello]

Come to think of it, this should probably be INVALID since it wasn't actually a
bug in Thunderbird.  But I'll leave this as is since it doesn't matter that much.

Comment 7

[Wayne Mery (:wsmwk)]

*** Bug 321854 has been marked as a duplicate of this bug. ***