virtuoso-t eats constantly 50% CPU power (1 core)

[Marcin Gil]

After starting Kontact (nepomuk and strigi enabled) virtuoso-t process constantly eats 48-50% of CPU -- which means that it might have 1 core only for itself.

KDE Platform Version 4.7.2 (4.7.2)
Kubuntu 11.10 Oneiric

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/894841/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Marcin Gil (marcin.gil)]

Applying to "Find the Right Package" to be a good member of community :)

Changed package to virtuoso-opensource-6.1-bin

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Thomas Dreibholz (dreibh)]

virtuoso-t wastes lots of CPU time on my 6-core machine. Particularly, it utilised multiple cores. I am using 64-bit Kubuntu Oneiric, with updates to KDE 4.8.0. This problem exists since the update to KDE 4.8.0.

top output:
Cpu(s): 0.8%us, 8.9%sy, 52.3%ni, 37.8%id, 0.0%wa, 0.0%hi, 0.2%si, 0.0%st
Mem: 8047056k total, 7973392k used, 73664k free, 216244k buffers
Swap: 8299516k total, 7260k used, 8292256k free, 2731232k cached

  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
 2556 user 39 19 444m 325m 4556 S 375 4.1 14399:05 virtuoso-t
...

[xor (xor)]

Affects me on Kubuntu12.10 amd64.

[xor (xor)]

This now happens very frequently and continously empties my laptop battery and is very annoying when working mobile:
Kontact won't shut down Akonadi when you quit it so I always have to terminate it manually via commandline.

Can someone please start working in this issue OR modify Kontact to terminate Akonadi when exiting? If Kontact did tell Aknoadi to shutdown when Kontact is shutdown, it would at least be possible to end the CPU usage through the UI.