[Bug 307066] New: High memory consumption with large local mail setup.

[Marcel Wiesweg]

https://bugs.kde.org/show_bug.cgi?id=307066

            Bug ID: 307066
          Severity: normal
           Version: 4.9.1
          Priority: NOR
          Assignee: kdepim-bugs at kde.org
           Summary: High memory consumption with large local mail setup.
    Classification: Unclassified
                OS: Linux
          Reporter: marcel.wiesweg at gmx.de
          Hardware: Other
            Status: NEW
         Component: general
           Product: kmail2

Fresh conversion from KMail 1, local mail setup, about 170000 mails, in
subfolders.
Opening KMail, reading new mails in all relevant subfolders. Memory
consumption:
kontact      715 MB
akonadi_mixedmaildir 415 MB
akonadiserver         130 MB
mysqld                  107 MB

total: 1,3 GB

I'm talking about the 700 MB in kontact and the 400 MB in the resource. Is this
cache? Is this linearly growing data structure? Is this lost memory?
I am aware that a grouped list view with 50000 mails will consume memory. Yet
this is a lot.
Memory stays constant, when the mail view show 0 messages, no decrease. 

Reproducible: Always

Actual Results:  
Eats memory

Expected Results:  
Eats less memory

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