[Kde-pim] Problem with KDE PIM Enterprise

[Ingo Klöcker]

On Tuesday 23 October 2007, Ingo Klöcker wrote:
> Hi,
>
> I'm having serious problems with KMail from the enterprise branch.
> When I start KMail then KMail starts 160 or more kio_file processes.
> This kills my brand new Core 2 Duo system for more than 15 minutes.
> With the KDE 3.5 branch version (from yesterday) this problem does
> not occur. With this version KMail starts within seconds.
>
> Attached are three snapshots of KSysGuard:
> - using the precompiled kdepim provided with OpenSUSE 10.3
> - using self-built enterprise version of kdepim from today
> - using self-built KDE 3.5 branch version of kdepim from yesterday
>
> The dent in the load graph approx. 5 minutes after the start of KMail
> is caused by 2 'kontact --iconify' instances that freeze KMail until
> they are killed. The KDE 3.5 branch version starts a single Kontact
> instance that does not freeze KMail.
>
> As far as I can see those kio_file process all access a .../cur
> folder (of which I have 200+).

I have identified the revision in which this regression was introduced:
=====
SVN commit 669156 by tilladam:

Implement a size column in the shared folder tree class and in 
kmail. Add the ability to use a configurable color for the
folder name and size when it is close to a configurable quota
threshold (provided the folder has quota info in the first
place). Implement size retrieval for mbox and maildir storage.
=====

Apparently, all maildir folders are queried simultaneously on startup of 
KMail. Please use a job queue for this instead.

Alternatively, have a look at how the values for the "Total column" 
(i.e. the number of messages in a folder) are determined. The last time 
I enabled the Total column the numbers were determined one after the 
other. Moreover, they were only determined if they were actually 
needed, i.e. if one had enabled the column.


Regards,
Ingo
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