Bug 228884 - nepomuk/vituoso taking up 100 cpu at startup
Summary: nepomuk/vituoso taking up 100 cpu at startup
Status: RESOLVED DUPLICATE of bug 246678
Alias: None
Product: nepomuk
Classification: Miscellaneous
Component: general (show other bugs)
Version: unspecified
Platform: unspecified Linux
: NOR normal
Target Milestone: ---
Assignee: Sebastian Trueg
Depends on:
Reported: 2010-02-28 14:11 UTC by mbc111
Modified: 2011-01-06 19:02 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed In:
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Description mbc111 2010-02-28 14:11:18 UTC
Version:           unknown (using 4.4.00 (KDE 4.4.0) "release 2", KDE:KDE4:Factory:Desktop / openSUSE_11.2)
Compiler:          gcc
OS:                Linux (i686) release

whenever you start a new session - this has only begun to occur recently - nepomuk and virtoso take up 100 percent of the cpu. this problem seems solvable by killing the virtuoso process and restarting nepomuk in system settings.this is pretty wierd.
Comment 1 Sebastian Trueg 2010-03-01 10:08:15 UTC
I suppose Virtuoso is rebuilding its index. This will only happen once so I recommend to let it finish.
Comment 2 mbc111 2010-03-03 02:11:50 UTC
It actually has gotten better now and for a while it ran almost undetectably. But half the time it consumes 30-40 percent of the cpu, and this is even when strigi is idle. Is there a reason why a database should regularly or even sometimes eat up as much power as Doom3?
Comment 3 Sebastian Trueg 2010-03-03 09:57:42 UTC
No, it should not use that much CPU when idling away. Which other apps are you running during that time?
Comment 4 mbc111 2010-03-04 01:03:49 UTC
most of the time its hovering at around 15-25 percent now of user cpu when running no other apps besides the kde desktop preloads. Its usually the most intensive process besides xorg. 

Ps. By the way Xorg fluctuates between 5-30 % user cpu(average of around 10) with a minimal number of apps open. Is this normal for a pc with these specs?

Processor (CPU):   Intel(R) Celeron(R) CPU 540 @ 1.86GHz
  Speed:  1,862.05 MHz
1 gb ram
Comment 5 Antonio Rojas 2010-03-04 19:05:30 UTC
I'm seeing this too after the 4.4.1 update. It didn't happen in 4.4.0
Comment 6 Sebastian Trueg 2010-03-05 10:56:48 UTC
@A Rojas: and you, too, see high CPU usage while doing nothing?
Comment 7 Antonio Rojas 2010-03-05 11:07:54 UTC
Yes, while indexing is idle
Comment 8 Werner Llacer 2010-03-16 18:29:37 UTC
Much the same behavior here, but under ArchLinux and SC 4.4.1.  (cpu Intel E5400 @2,70 GHz)
I did notice lousy responsiveness, specially in Dolphin and krunner.
top gave consistent 50-70% CPU usage for virtuoso-t and some 20% additional for several nepomuk services.
For all the 4.4.1 lifespan, at least, (installed March,3) strigi has been indexing my 50 Gb partition, and hasn't stopped yet. (As it is my private laptop there are a lot of reboots, but estimate an 3 hour uptime daily average). In this timespan I have downloaded a couple of big -zip and cpio- images (Oracle installation images for various archs), which might count, but ...

For the time being i've disabled nepomuk; but I'm available for some test runs as you might please (CET)
Comment 9 Werner Llacer 2010-03-18 21:42:30 UTC
My software versions KDE 4.4.1-1; strigi 0.7.2-2; soprano 2.4.1-1; virtuoso 6.1.0-1

And btw. (Sebas is probably aware) I've found a number of very similar bugs:
196402 (similar outlook)
219687 as kmail show-stopper ?

Whatever is still not solved on 4.4.1
Comment 10 Sebastian Trueg 2011-01-06 19:02:01 UTC

*** This bug has been marked as a duplicate of bug 246678 ***