262843 - Mozilla handles IMAP folders with over 10,000 messages poorly

Status: RESOLVED DUPLICATE of bug 226730

(MailNews Core :: Database, defect)

Description

[Ian Neal]

Using BuildID 2004092705 on WinXP SP2
Steps to reproduce
1. Have an IMAP folder with 20,000 or messages in
2. Try opening it

Expected results
1. Mozilla reads the headers in and then displays the headers in the relevant window

Actual results
1. Mozilla reads the first 10,000 fairly quickly, then slows down to almost a
complete halt and uses 99% CPU.

Netscape 4.x copes with a folder with 70,000+ messages without this performance
problem.

Comment 1

[David :Bienvenu]

Ian, is it possible that you have a ton of messages, all with the same subject,
in this folder?

Comment 2

[Ian Neal]

Yes, I do indeed "Virus Alert"

Comment 3

[David :Bienvenu]

yeah, this is a dup - we handle that very poorly. If you turn off threading by
subject without re, user_pref("mail.thread_without_re", false); then this won't
be a problem. But you may want messages with the same subject, with a re:
header, to get threaded together...

Comment 4

[Magnus Melin [:mkmelin]]

->dupe per comment 2 and 3.

*** This bug has been marked as a duplicate of 226730 ***

Comment 5

[[:Aureliano Buendía]]

Cleanup *dupeme* whiteboard flag from bugs that are marked as Resolved Duplicate!