First of all i would like to ask you to forgive me my poor English and say big "THANK YOU!" for developing KDE. I used to work on it with great plesure, but after 4.4.1 update my computer became very slow. Nepomuk and stigi use definetly to much memory and processor resources. I cant turn it off because i got frustrating Akonadi "error" message, that Nepomuk is turned off.

As far as i know one of the most important Unix tradition says that user knows better what he want to do than OS. Is this tradition out-of-date? I Simply dont need tags, comments, semantic searching, akonadi, and so on.

I hope there is some way to disable it, and i will not have to use this... Gnome Shell

You need to disable akonadi as well, because akonadi depends on nepomuk. Note that as of KDE 4.5 you will not be able to use any of the KDE pim applications (korganizer, kcontacts, kmail, etc) without nepomuk because they will all depend on akonadi and akonadi depends on nepomuk. You can disable strigi which will disable your ability to tag and search files, but you will need to leave nepomuk on.

Then you should warn users that they need at least 8 GB RAM and the newest Intel CPU... My 1GB(RAM) and 3GHz(CPU) machine is useless because of Nepomuk. I will stay with Debian stable (Squeeze will have 4.3.4. on board). Who knows? Maybe in KDE 4.5 or 4.6 those funkction (useless for me) will be somewhat optimized.

And why there is no choice? What if i dont need Nepomuk to manage my personal data?

As TheBlackCat said you can simply disable the file indexer (Strigi). Nepomuk itself shouldn't affect the performance much much, as far as I know.

By the way, I have 2.60 GHz CPU and 1.5 GB RAM. I can still watch HD movies when Strigi is indexing (sometimes I have to disable compositing) .

Is this a new idea - disable what you want to use (compositing) because something what you dont want to use is working right now?

You only need to disable compositing when you are asking for extreme work, as Hans was suggesting. Personally I would temporarily disable strigi instead. Actually, strigi is too hard on many lower-end boxes at the moment, and is better disabled except when you are doing little work. It will improve, I'm sure. Meanwhile, this 5-year-old laptop with 2GB RAM has compositing, runs akonadi + nepomuk, and has no problems with anything at all except strigi indexing when I'm working hard.

Plain and simple - disable strigi.

The 'Semantic desktop' has nothing to do with the slowness. I'm running the development version of KDE on a netbook with both nepomuk and akonadi running.

Thanks for replaying and advices

Hello,

I just found this topic, so I had Stringi already disabled. The question is how to completely disable Nepomuk from starting? I opened System-Settings -> Advanced -> Advanced and disabled Nepomuk. I then rebooted.
Yet there still is the process running:

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$ ps -ef | grep nepomuk
rysiek    7407     1  0 13:33 ?        00:00:00 kdeinit4: nepomukserver [kdeinit] -session 10efd2d2d6000127045188900000073590006_1270470654_563083
rysiek    7525  7519  0 13:34 pts/1    00:00:00 grep --colour=auto nepomuk



So I killed it.
I don't need it as I don't use the other software mentioned before - korganizer, kcontacts, kmail, etc.

The reason why I am trying to disable it is because whenever I have additional disks mounted and I also pop in my CD with tons of files I want to browse, every 2 minutes I experience hangs in Dolphin, which drives me crazy, because I have to wait to continue working. I also think something is not right, because in the File-Indexing tab the only folders ticked was my $HOME, which doesn't have many files, because I keep the majority of them on /media/disk which is a separate hard drive.

And this is on the following hardware:
1 SMP x86_64 AMD Phenom(tm) II X4 810 Processor AuthenticAMD
nVidia Corporation MCP78S [GeForce 8200] High Definition Audio (rev a1)
ATI Radeon HD 4890

So, what is really killing my Dolphin session?

Regards,
Richard

Which version of KDE are you using? I think some hangs with Nepomuk in Dolphin were fixed at some point in the 4.4 cycle..

nepomuk itself doesn't index any files... so this hanging should be gone. Only Strigi indexes... But in its standard configuration strigi doesn't index anything but your home folder.

And Strigi can be switched off in SystemSettings > Advanced tab > Desktop Search.

I do not like and do not need all those things (akonadi, strigi, semantic desktop, kdepim applications) as well. It would be really nice to have just one checkbox somewhere to disable it.
Also on the source level there must be some switch to make it easier to manage packages. For example, each time I upgrade my soft I have to install akonadi, although it is never used and not really required by any of the programs I use.
I have a feeling that KDE becomes a monster.

Onanymous wrote:I do not like and do not need all those things (akonadi, strigi, semantic desktop, kdepim applications) as well.

you should try this one:
Modify this file: ~/.config/akonadi/akonadiserverrc

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[QMYSQL]
StartServer=false

And check at "/usr/share/autostart" if you have a "nepomukserver.desktop" file.
If so, remove it.

Please note the warning posted here before following that: viewtopic.php?f=154&t=88771&start=15#p167730