[Kde-pim] KDE 4.8, Virtuoso at 130% CPU for hours now - how can I help find the issue?

[Christian Mollekopf]

Hey Georg,

It might be that the initial indexing of the new akonadi nepomuk indexer is 
causing virtuoso to run at full speed. If this is the case you should see the 
that the indexer is currently indexing (by it's status message) in akonadi 
console. The indexer itself shouldn't use a lot of cpu power, all the work is 
done by virtuoso.

Otherwise I unfortunately can't help you. It happened to me a couple of times 
that virtuoso got stuck on some query, resulting in virtuoso going crazy. 
Killing virtuosos & nepomuk and restarting the nepomukserver process did the 
trick in those cases for me though.

There is the "isql" utility which can be used to figure out what virtuoso is 
actually doing, but I haven't used it myself so far, and would need to dig 
some information out about that. Contact me if you think this could help.

Cheers,

Christian



On Friday 27 January 2012 19.58:30 Georg C. F. Greve wrote:
> Hi all,
> 
> On a freshly installed Fedora FC16 with KDE 4.8 I set up my Kontact anew
> since I figured maybe some issues were caused by migration cruft.
> Unfortunately, that is apparently not so.
> 
> Virtuoso is the #1 resource hog on the machine, with 130% CPU constantly,
> occasionally going to a whopping 160%, and has been doing this for hours
> now, as well as over 200 MB of process memory. I've also seen MySQL go nuts
> on me before, although not right now - with an uptime of three hours,
> mysqld has a TIME+ ranking of 1:47.47. Virtuoso has 183:41.11.
> 
> I followed the advice of http://userbase.kde.org/Akonadi and disabled
> Nepomuk search as well as the Contact plugin, after which I restarted the
> machine. The above numbers are *after* doing that.
> 
> Others, including Marcus Feilner, the journalist who shows up to the KDE PIM
> meetings report the same issue, see
> https://plus.google.com/105201437130417639658/posts/XPQ8DGy5ahR
> 
> So I think it's time we do something about this...
> 
> ...how can I help?
> 
> Is there anything in terms of debugging information I can provide that would
> help you figure out the issue?
> 
> Best regards,
> Georg
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