From kdepim-users  Tue May 15 17:58:08 2007
From: Anne Wilson <cannewilson () tiscali ! co ! uk>
Date: Tue, 15 May 2007 17:58:08 +0000
To: kdepim-users
Subject: Re: [kdepim-users] KMail + IMAP painfully slow
Message-Id: <200705151858.08513.cannewilson () tiscali ! co ! uk>
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On Tuesday 15 May 2007, Ross Boylan wrote:
> I've spent the day watching KMail be unresponsive (using most of the CPU,
> not updating the screen, not responding to the mouse) using a local (Cyru=
s)
> IMAP server.
>
> Moving messages takes many minutes, sometimes (even when it's not many
> messages).
>
> Getting the text of a message to display can take forever.
>
> I disabled automatic checking, and this seemed to help some.  The manual
> check remains slow, I guess because it insists on visiting every folder.
>
> Am I doing something wrong?  Is my mailstore bigger than KMail was design=
ed
> for?  Or is KMail just not that good at IMAP?
>
> I have 2 imap accounts; a small remote one and a large local one.  The
> local one has about 115 folders (with several levels of nesting), some of
> which have a lot of messages (several in the 10's of thousands, the large=
st
> around 80k).  KMail's area under .kde is about 335Mg.  I have yet to visit
> most of the folders.
>
> kmail 3.5.5.dfsg.1-6 (the about panel says it's 1.9.5) on Debian GNU/Linu=
x.
> 3GHz Pentium4 with a decent SATA disk.
>
> It's doing better than evolution, which can't define the accounts, and
> arguably better than mutt, which hangs every time it exits a folder.

Could it be that you are using mbox folders?  If that is so, remember that =
to=20
display a message the mbox has to be opened, then it has to skim down to fi=
nd=20
the relevant bit.  When you delete or move the message the whole mbox has t=
o=20
be re-written.

I used to use it, and it was speed that made me change to maildir.  The goo=
d=20
news is that it's easy to do.  If you make a second folder for each account=
 -=20
say these mails are in a kdepim folder, you make a kdepim2.folder in maildi=
r=20
format.  Drag all the messages into the new folder, delete the old one, and=
=20
rename the new one to kdepim.

I did this with all my folders - possibly not as many as yours, but maybe=20
70-80.  It does take a little while, but after that speed is no longer a=20
problem.

Hope that helps

Anne



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