[Kde-pim] Marketing blocker collection, DEADLINE: 2013-03-10

[Volker Krause]

On Tuesday 19 March 2013 09:59:39 Jos Poortvliet wrote:
> On Saturday 16 March 2013 12:34:01 O. Sinclair wrote:
> > On Saturday 16 March 2013 8:49 AM Jos Poortvliet wrote:
> > > I know it is too late, but what about memory usage? Eating >300 mb of
> > > ram
> > > is hard to justify, KMail+akonadi+mysql+nepomuk however happily eat up
> > > 1gb and don't stop there - 2, 3 GB is quite normal it seems. That is
> > > just insane...
> > 
> > On Kubuntu 12.10 using KDE 4.10.1 I see nothing near 2-3 Gb RAM..
> > Nepomuk (virtuoso-t) takes what I give it (350 Mb), sometimes more for
> > some reason. The others nothing significant, akonadi +100 Mb, mysql 75 Mb
> > and Kontact 103 Mb. That gives me roughly 625 Mb in total
> 
> How about:
> http://wstaw.org/m/2013/03/19/plasma-desktopro1663.png

ouch, this is far from normal...

I see the following here (also measured with KSysguard, full debug build from 
recent master, on top of SuSE 12.2) on my almost never rebooted laptop, 
Kontact with 50 corporate calendars and about 10 multi-10k email folders 
loaded:

Kontact: 440M
MySQL: 124M
Virtuoso: 67M
IMAP: 49M
Akonadi: 32.8M
Nepomuk (Storage): 17.3M
Nepomuk Feeder: 3.9M (yes, Nepomuk and indexing are enabled!)

Still too much and there's room for improvements in various places, but 
nowhere near the extreme numbers you have.

I'm especially surprised that both your MySQL and Virtuoso go way beyond their 
respective configured limits. The only way to trigger that I can think of is 
the attempt to store a huge object inside the database. And again, that's 
limited to 32Mb in the mysql config (so you'd need several rows of that in one 
go), and not done by Akonadi in a default configuration (check 
~/.config/akonadi/akonadiserverrc for settings regarding external storage or 
the size threshold of that). A messed up MySQL config would also be a 
(theoretical) option, check ~/.local/share/akonadi/mysql.conf for the size 
limits in there.

regards,
Volker

> Note that that is ONLY kmail, no Kontact - it requires 450 MB which is
> mostly because I haven't opened many folders yet. I'm sure I can balloon it
> to 800 mb by just iterating over my (disconnected-imap) folders but then my
> 8GB ram computer will come to a grinding halt so I'd rather not do that.
>
> Oh, I restarted akonadi and kmail yesterday due to excessive memory usage.
> 
> Right now, my mysql is at 440 mb, Akonadiserver eats 300 mb, the nepomuk
> feeder 140. Just filtering on the word 'Akonadi' in ksysguard reveals a
> little over 1GB of ram. Yeah, that one Nepomuk process eating 1.5 GB ram is
> an impressive outlier ;-)
> 
> This is after a couple of days of keeping my computer on. I laugh at your
> 625 mb ;-)
> 
> How about a competition? Who can get Akonadi/Nepomuk memory usage up
> highest? Do I win?
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