[Akonadi] [Bug 312704] mail_filter_agent eats up memory

[furgl]

https://bugs.kde.org/show_bug.cgi?id=312704

--- Comment #6 from furgl <pfurgala at gmx.de> ---
@developers:

please check code in mail filter agent for logging feature(s) !!!

I noticed by a fault in my filter rules that:

the less filters kmail processes the less memory it allocates

looking for the filter logs I saw that filter logging
was enabled by default to unlimited

by disabling filter logging
I could decrease memory consumption very significantly
and increase filter speed many times

but: 

memory consumption is still increasing !!!
even not that much than before
so ther must be a memory leak .........

before, with filter logging enabled, I could process some hundred mails till
memory usage of filter agent reached about 1.5GB
one core was equipped with nothing but the filteragent but nothing happened any
more and I had to restart filter_agent

now with the filter logging disabled kmail could handle about 15000 mails and
memory consumption raised only from 14M up to below 250M

greets,

peter
OS12.3RC1 KDE4.10

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