[Bug 279800] New: akonadi_nepomuk_email_feeder uses huge amounts of memory

[Todd]

https://bugs.kde.org/show_bug.cgi?id=279800

           Summary: akonadi_nepomuk_email_feeder uses huge amounts of
                    memory
           Product: Akonadi
           Version: 4.7
          Platform: openSUSE RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Nepomuk Feeder Agents
        AssignedTo: tokoe at kde.org
        ReportedBy: toddrme2178 at gmail.com
                CC: vkrause at kde.org, kdepim-bugs at kde.org


Version:           4.7 (using KDE 4.7.0) 
OS:                Linux

Whenever I use akonadi, the process akonadi_nepomuk_email_feeder uses a massive
amount of memory, usually between 1 and 3 GB.  This leave the system almost
totally unresponsive due constant disk access.  I can kill the process, but it
just comes back again.  Upon startup or the process restarting it uses GB  of
ram within seconds.

I deleted all my accounts besides one tiny one with about a dozen emails, and
it still uses this much memory.

Here is the detailed information from the run command interface process monitor
from just now:

Process 3454 - akonadi_nepomuk_email_feeder

Summary

The process akonadi_nepomuk_emai (with pid 3454) is using approximately 1.5 GB
of memory.

It is using 1.5 GB privately, and a further 23.5 MB that is, or could be,
shared with other programs.

Dividing up the shared memory between all the processes sharing that memory we
get a reduced shared memory usage of 2.8 MB. Adding that to the private usage,
we get the above mentioned total memory footprint of 1.5 GB.
Library Usage

The memory usage of a process is found by adding up the memory usage of each of
its libraries, plus the process's own heap, stack and any other mappings. 

Private:
1583064 KB    [heap]
1384 KB    /usr/lib64/libQtWebKit.so.4.7.3
280 KB    /usr/lib64/libQtGui.so.4.7.3
184 KB    /usr/lib64/libkdeui.so.5.7.0
140 KB    /lib64/libcrypto.so.1.0.0

Shared:
3688 KB    /usr/lib64/libQtWebKit.so.4.7.3
2824 KB    /usr/lib64/libQtGui.so.4.7.3
1680 KB    /usr/lib64/libkdeui.so.5.7.0
1372 KB    /usr/lib64/libkdecore.so.5.7.0
1292 KB    /usr/lib64/libQtCore.so.4.7.3

Totals

Private    1587592 KB    (= 312 KB clean + 1587280 KB dirty)
Shared    24092 KB    (= 24092 KB clean + 0 KB dirty)
Rss    1611684 KB    (= Private + Shared)
Pss    1590497 KB    (= Private + Shared/Number of Processes)
Swap    0 KB

Reproducible: Always

Steps to Reproduce:
Start the computer

Actual Results:  
Huge memory footprint

Expected Results:  
Smaller memory footprint

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