Re: Excessive CPU use from virtuoso-t

On 13/11/2012 18:22, Russ Kepler wrote:
> Over the weekend I upgraded to
>
> Kubuntu 12.04 upgraded
> Qt: 4.8.2
> KDE Development Platform: 4.9.3
> Kontact: 4.9.3
>
> I haven't really had the opportunity to evaluate things but the "conflict
> resolution" messages may well be gone.  But one problem I've had since the
> prior release is still there - when I enable "Nepomuk Semantic Desktop" the
> virtuoso-t  process starts chewing CPU starting at 1 core of 6 (so 16%) and
> eventually climbing to 3 of 6.  Kmail has trouble fetching mail, the headers
> come though OK but the bodies are delayed.  Sometimes it seems to take a
> couple of requests to fetch the body of an email (a 'reply' or 'forward' seems
> to help).
>
> I left it running for 9 cpu days with no improvement before trying something
> else - I turned off the Nepomuk File Indexer but left .  On logging out and
> back in a very curious thing happened - the nepomukservicestub started
> consuming 4 or 6 cores and the virtuoso-t process had only one.  I was unable
> to start kontact or even akonadiconsole.  Since I couldn't access email at all
> I shut it off completely and rebooted.
>
> It sure looks like a deadlock issue, or perhaps something in my configuration
> or setup that's hanging things.  I can live without the file indexing but it
> would be nice to have my email indexed but right now I don't have the time to
> wait for email.
>

Before troubleshooting endlessly I would enable kubuntu backports ppa 
and do dist-upgrade (note dist-upgrade, some got issues from doing a 
normal upgrade) to get 4.9.3 that I consider a way better experience 
than 4.8.x  I actually stayed off Kubuntu 12.04 until 4.9.x was released 
for it. For example autocompletion of mail addresses from address books 
do not work in any 4.8.x release.

good luck
Sinclair


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