[Bug 233138] New: memory use excessivly high

[Thomas Fjellstrom]

https://bugs.kde.org/show_bug.cgi?id=233138

           Summary: memory use excessivly high
           Product: kmail
           Version: 1.13.2
          Platform: Debian testing
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: tfjellstrom at shaw.ca


Version:           1.13.2 (using KDE 4.4.2)
Compiler:          gcc 4.4.3 
OS:                Linux
Installed from:    Debian testing/unstable Packages

After running for some time, or being told to load a few local folders with
many messages, and many unread messages kmail will start to use up 350MB or
more of ram quite easily. And closing folders that caused memory use to spike
doesn't seem to free all the ram that was allocated to load the folder list. I
can understand that loading a LOT of message headers might take a lot of ram,
but it probably should be freed up later if its not going to speed up the
process of loading the list at all (it doesn't seem to, loading a large folder
with many unread messages still takes minutes no matter how many times you open
and close the folder).

How to reproduce, load a large folder, see ram use increase by 100-200MBs
easily.

Expected behavior, either use little ram, or put it to good use to make folders
open instantly.

proof of memory use: 
moose    22312 48.9 14.0 1131460 565896 ?      Sl   22:44   8:54 /usr/bin/kmail
-caption KMail

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